FSE

Furry search engine

formerly SoFurry search engine

****DISCLAIMER: This story is for adults only (18+ years) and contains sexual descriptions of male/male interaction, cloning, incestual tones, muscles, hyperphallia, inflation, vore, digestion, etc. I will not be held accountable for any discontent this may cause. Please do not comment about the subject matter if it is not to your liking.*****

Build a Brother

"Nah, we have to make this bigger," the huge wolf said as he looked over the blueprints.

The giant, gray lupine thumbed a few strands of his blond hair from his eyes. The aquamarine irises glanced over the white lines over the blue paper, making a few adjustments with his pen. Taking a few steps back, he looked it over and brushed through his blond beard, humming to himself.

"Why not bigger than that?" the leporine woman asked, adjusting her lab coat with a tinkling snicker. She also had to adjust her shirt to keep her deep cleavage in check.

"Mm... yeah, maybe so," Tachi agreed. He continued to pencil in a few things around the middle of the picture. On it was the shape of a body--a rather large body. It was certainly muscled, but it had the inner workings of a robot. Wires and tubes were moving every which way, complicated measurements of voltage and liquid along the sides, and chemical equations all over the place.

"Oh, oh! We can make it interchangeable! Like... modular pieces. Umm... augmentation!" Nina stated excitedly, brushing her long, blue hair back. Her blue fur bristled at the thought while she pressed her glasses back up her snout.

Tachi grinned and raised an eyebrow, looking down at the blue bunny.

"What, like his penis?" the wolf asked with a snorting snicker.

"Duh! And his muscularity. And... I don't know, whatever else! We can make his flesh more synthetic and stretchable than anything. Your growth formulas have shown that," Nina stated, her voice almost quivering with delight.

"Hmm... you may be onto something. I've thought of growth, of course... but something that can be adjusted at will sounds a lot more fun," Tachi stated as he continued penciling things in. He licked his lips at the thought, barely able to contain the sudden swell in his pants, visibly pushing through his lab coat while he grunted.

Nina flicked one of her large ears and looked down somewhat, seeing the huge, bulging groin while her cheeks flushed. She cleared her throat and went back to the table where the metal skeleton was. She already began to work, moving around a few of the wires and tubes, soon zeroing in on a few of the changes they had already talked about. She had to find something to get that huge junk out of her head.

After a few more minutes, there was a heavy bump against her back by a very big, soft, squishy surface before a grunt rang out from behind her, followed by a shuffle to the side. Nina let out a squeak and she jumped to the side, eyes wide while she looked up at the huge wolf.

"Whoops, my bad," Tachi snickered as he looked over the endoskeleton.

"You did that on purpose. I will get Vincent after you, Mr. Marin," she stated with a huff, brushing down her lab coat while she continued adjusting the metal while flustered.

"Fine, fine. And please, call me Tachi," the wolf stated, his own face suddenly reddening while he looked over the blueprint table he rolled over to them. Afterward, he gathered himself up and made his way toward the body-sized cylindrical tanks which lined the farthest wall, filled with a gel-like liquid. One of them contained a floating, white globule inside.

The wolf gripped two joysticks in front of it and began to move them, controlling two robotic hands inside of the tube, beginning to work and spread the glob inside of the liquid. He brought his paw to the keyboard and typed a few things while one of the robotic hands moved about and began to inject something else into the form. It responded with a twisting contort, wriggling in on itself before it settled again.

"There we go. That should help with some elasticity," the wolf stated before trotting back over toward the bigger computer in the corner. He tapped away at it while looking up, displaying bits of data and holograms all around. On the main, monitor, there was a curious display. It was a gigantic, anthropomorphic otter. Beside it was a smaller, familiar-looking one. The smaller one had long, brown hair, purple eyes, a few spots, and a gigantic package in front.

"You were able to get some of Bobert's DNA?" the rabbit asked as she continued adjusting the innards of the endoskeleton.

"Are you kiddin' me? I get some of Bobert's DNA a few times a week," Tachi chuckled as he continued typing commands into the computer.

Nina let a slight giggle out while she continued working.

* * * * * * * * * *

A few weeks had passed. The endoskeleton had been removed from the table and was now floating in the cylinder tank that the glob had been in. Except, now, there was a giant otter inside of it, curled somewhat with a breathing mask on while bubbles rose from his muzzle. His muscles were massive, looking to be almost as big as Tachi. He had long, brown hair and similar spots to Bobert, but his package was even bigger.

The package between the floating otter's legs filled quite a bit of the tank on its own. The big, cream-colored testicles were as big as beach balls with a huge, black tube of a cock floating above it--it was as long as a yardstick and as thick as the middle of a tire. It seemed to be steadily throbbing with intricate veins along the shiny, black surface.

The strength that the creature seemed to have was tremendous. His muscles quivered now and then, visibly bulging and rippling in the process. Still, he was floating in comatose. Those powerful pecs rose and fell with his breath in the mask he wore, completely unresponsive to the gurgling sounds around him, bobbing in the goo.

"This is incredible," Nina whispered, placing a hand on the glass and watching their creation bob.

"It is. I'm surprise it has gone so well thus far. Those cells definitely took a liking to the endoskeleton. Well done," Tachi stated, patting the bunny on the shoulder, causing her to stumble against the glass a bit.

"Thank you, Mr. Mar-errr... Tachi," she squeaked, standing back up and brushing down her lab coat.

"I suppose it's time to test his software," the wolf rumbled with a bigger grin.

"Huff... already? I don't know if I can handle it," the bunny murmured, shivering slightly with excitement.

Tachi was already typing a few things into the console in front of the chamber. He wasn't even looking at the keyboard and watched the gigantic, floating otter. His blond tail was flicking about, flitting in the cool air behind him while he watched. Metal whirring came to life throughout the capsule and the goo began to drain, slowly lowering the big lutrine toward the metal flooring. After the glass casing lifted into the ceiling, bigger metal arms lowered and clasped onto the limp body.

Lifting it up, the bulky otter android was suspended onto his feet, arms and waist held up while his head hung down, looking as if the male was tied up. However, more whirring began. Two showerhead-like contraptions expelled water along the sides of the otter, moving up and down his body and washing the clinging liquid away. After switching up with drying mechanisms, the otter looked perfectly clean and asleep, held up by the mechanical arms.

The otter not only had fur, but he had thick hair between his pecs and along his under arms as well. It ran down his fore arms and he had a bit of a mutton-chop beard on the sides of his head. His hair was as long as Tachi's and his form twitched now and then with his powerful musculature. The great android was quite masculine, signified by all that hair, the broad chin, and the giant junk hanging past his knees.

Tachi took a breath and then rubbed his head before he tapped away at the console again, though soon stood to the side and in front of the hanging otter.

"System command, this is Eustathios Maxime Marin, authorization sequence 381905-WW. Initiate operating system start up," Tachi stated with authority.

Nina watched with bated breath.

For a moment, there was no response from the giant android. Then, those purple eyes opened. His head lifted upward and he stared blankly ahead at the far wall.

"Start up complete. Awaiting input," a deep, powerful voice echoed from the broad chest of the otter, although monotone. The sound rippled off the walls, almost loud enough to vibrate the nearby tables.

"Whoooaa... lower output vocalization by 30%," the wolf stated, rubbing his ear while Nina giggled on the side.

"Output vocalization reduced by 30%," the otter spoke. His voice was still deep, but it wasn't shaking the ground.

"There, that's better. System command, state your name and function," Tachi stated afterward.

"Lutrinae Model 1653-WW, first edition. Codename: Stevert. Normal otter and escort." The voice came again while the otter stood motionless. The robotic arms slowly pulled from the male, leaving him standing up on his own.

"Bobert is going to flip out," Nina squeaked in excitement, her small tail giving a flit while she looked up to Tachi.

The wolf grinned even more while he began to test the vitals, measuring blood flow through his heart and examining eye function. The pupils were reacting normally, shrinking when the pen light was shined on them. He lifted the android's arm and rubbed along the muscle tension, squeezing it and grinning while he trailed down to his member. It felt as real as any could be, trailing his paw along the veins and feeling it pulse beneath his fingers.

"Good, all vitals are fine. Now... system command, activate artificial intelligence system. Any and all further commands will henceforth be rerouted to the central core's intelligence system. The core will decide upon and execute commands under its own judgment," the wolf stated.

"Command acknowledged. Activating artificial intelligence core. All further commands will henceforth be ignored. The core will assume any and all commands given henceforth," the otter robot stated in his monotone voice.

Nina went wide-eyed before blinking up at the wolf.

"Are you sure that's wise? We haven't even done very many tests," the small woman murmured, swiveling her ears back.

"Too late now! Besides, I trust our workmanship well enough," the wolf chuckled.

Nina blinked and nodded a bit, looking to the otter, who was suddenly slumped over. She gasped, watching him about to fall forward, but Tachi was already rushing up to catch him.

The wolf let out an "oof" as the otter stumbled, but Tachi lifted him with some difficulty and slowly walked to one of the operating tables. Gently lowering their creation onto it, the wolf huffed and settled him gently.

"That metal skeleton might be a problem with weight," he grunted out.

"Hmm... maybe he can just write it off as surgery or something," Nina stated while she examined his fingers.

"Yeah, metal detectors won't be able to find it or anything. Maybe some thick plates or something," the wolf murmured as he looked down at the male.

At that moment, those purple eyes were once again revealed, but they came with a squint and a grunt. The otter slowly lifted his paw above to guard his eyes from the light, looking from left to right before he slowly sat up. He grunted again, looking to his big paw and wriggled his fingers, clenching it into a fist before he looked to Nina and then to Tachi.

"Hello..." the otter murmured, voice deep, yet soft all of a sudden.

"Hello there, Stevert. How do you feel?" Nina asked with a smile, bringing a paw to the otter's bigger one.

"I am... I'm fine," he replied, wriggling his fingers beneath Nina's paw, slowly turning his palm up to hold it before suddenly letting a handsome smile follow, "thank you for asking, Nina."

Nina blinked as her hand was gently squeezed, her face reddening before she looked to the side.

"Tachi... dear Lord," the bunny squeaked with a giggle.

Stevert then looked to the wolf, a slight smirk coming afterward as he reached out and gripped onto the wolf's hand, pulling him a bit closer.

"Hello, slut," the otter spoke again.

"W-wha... how..." Tachi trailed off as his eyes widened all of a sudden. He almost stumbled back, but the grasp of the otter was firm. He took a shaky breath as his own face reddened, looking into those new, yet familiar purple eyes.

"Dear Lord is right... We've created a monster," the wolf murmured with a nervous chuckle.

Seeing the reaction, the android continued and reached up, pulling Tachi's head down and pressing a firm, heavy kiss against his muzzle. The otter rumbled, tilting his head while he combed his fingers through that blond hair, yet still holding him firmly by the back of the head.

Tachi sputtered, giving a gasp before he was locked in a kiss with the otter robot. The wolf swiveled his ears, shuddering and reaching upward slowly, gripping into one of those pectoral muscles that he was so familiar with. He kneaded firmly, feeling the fur bristle and the muscle squish beneath his squeeze, leaving him to groan and kiss back. He felt saliva trickling into his maw from the otter, though huffed as it parted.

"Y-yeah... a monster," the wolf panted out.

Nina stared, a sheepish grin coming while she stepped back to watch, keeping silent.

"You like monsters though, don't you, slut?" the otter growled with a smirk, licking his lips.

"Yes," the wolf nearly squeaked, himself.

"Gonna have to tell my little brother about this," the otter growled, gripping one of his huge arms around the wolf's waist, marching him backward. Once the wall was nearby, the huge mustelid shoved the wolf against it, grunting and kissing him once more.

Tachi gasped as he was pushed along, easily moved through the vocal stun while he was shoved against the surface. He groaned and kissed back, tilting his head and bringing his paws into the huge arms that gripped him, rolling his fingers into the biceps. Everything felt so authentic, right down to the heat that was pulsing from the veins. However, whenever he felt that huge cock below, he tensed up and shuddered.

Nina grinned and reached for a nearby documentation camera, flicking on the recording option while she twitched her tail a bit more. She stepped to the side and continued her scientific exploration of their new creation, continuing to keep quiet. She couldn't help watching huge guys engage in such amorous activities--besides, she had to find out if their creation's organs worked well enough, after all.

Stevert rumbled and trailed his big paw along Tachi's chest, squeezing the pectoral in reply as he breathed in that scent after pressing his big muzzle against the wolf's neck. Deep sniffs followed while his cock throbbed thicker, lifting up once more while he grew more aroused, growling and grinding himself a bit harder. That black cock throbbed up along Tachi's leg, starting to press along his pants and between his thighs.

Tachi gave a heavy groan as he was grinded against, feeling that cock's heat pushing up along his thigh. He squirmed somewhat, but felt the powerful arms gripping him tighter, pulling away his lab coat. Then, the wolf tensed as he felt his shirt being tugged at before it was easily ripped away, exposing his hairy, blond chest and his thick, cream-furred belly, leaving him topless in the lab. The wolf panted, lifting his head back as he tried to press back against the otter, but the strength was overwhelming.

"W-what... are you going to do, Stevert? Nngh.. you shouldn't be... doing this in here," Tachi panted.

"Hush, slut. Lil' bro's gonna want to see how much you want it from us," the otter rumbled, smirking as he pulled his head back to press his muzzle against Tachi's once more.

"B-but... it's... you shouldn't be... this lustful," the wolf gasped out as that cock shoved up harder against him, leaving him to groan out in bliss.

"You don't want it?" the otter asked, perking his ears somewhat, seeming to pause in his actions.

"Y-yes, yes I want it!" the wolf groaned, squirming beneath the huge beast.

In an instant, Stevert gripped the wolf's pants and pulled them back. The clothing ripped in an instant, leaving the wolf completely nude against the wall. Apparently, the otter had pulled the wolf's speedo off as well. Stevert looked down and grinned at the size of his "father", rumbling out against him while he kissed along that neck and chin, pushing the wolf upward a bit more while he pressed his cock along the underside of that sac.

"I'm gonna fuck my dad," he growled out.

"W-what? You know you were... created?" the wolf asked with a blink, somewhat shocked.

"Of course I do. You installed a lot of knowledge into me. I can tell that such systems and things that I feel aren't normal... but I won't tell anyone," he whispered with a grin, "especially Bobert."

Tachi shuddered at the deep voice ringing through his ears. It sounded so natural. Everything about the huge otter was natural. With that cock pressing at his thick rump, anyone could believe that this android was a living, breathing, organic life form. Maybe he was, now. Either way, that cock was pushing up against his tailhole and he braced himself. He gripped onto the huge shoulders of his creation, grunting and spreading his legs as that head punched at him.

Stevert let a deep snarl go as he shoved upward, baring his thick fangs. His cock entered upward more and more, inch after inch of his massive three footer into his creator. He gasped shakily, legs quivering at the feeling as his cock pushed upward. It was the first time he had ever felt such pleasure, of course, only having knowledge of it programmed into his data. He pushed upward, jerking as he bit his lower lip.

The wolf gripped those broad shoulders, trying to steady himself as that huge, throbbing dick pressed upward into him. He lifted his head, pressing it against the wall as he groaned louder and louder, feeling it bulge his waist out and pressing along his belly. It pushed him upward somewhat, but the otter gripped Tachi's thighs with his powerful paws, keeping the wolf steady. Each inch was visibly moving through the wolf's body while he was pressed up against the wall.

"Like that, Tachi? I bet Bobert would have loved to watch me fuck you senseless," Stevert panted, kissing against that broad neck and chin while he shoved his entire length in. It throbbed, pulsing heavily as his big beach ball-sized nuts slapped along the wall while he shivered from the feeling. His breathing was ragged and he tried to grip against Tachi more, lifting his head and kissing at the thick bearded chin and neck.

"Yeah... he would've... We can do that later..." the wolf panted, shuddering and then gripping around the otter's broad neck, sweat dripping down his brow. To his delight, he felt the moisture dripping through Stevert's hair as well. "How does it feel...? Is everything working... nngh... alright?" The wolf was still concerned for his creation, after all.

"It feels... wonderful. Unlike anything I could imagine," the otter whispered, panting as he drew himself backward, letting half his cock pull out before he slammed back up with a growl. He began to jerk like a true piston, back from the wolf and into him again, rolling slowly at first, but gaining speed as he continued.

As if on cue, there was a sudden vibration through Tachi's rear and middle that caused him to yelp and squirm. He pulled and tugged as the tingling sensation went through his body, leaving his cock to gush thick gouts of precum between them.

"A-ah! AH! W-what... AAGH... what are you doing!?" the wolf gasped out, almost out of breath all at once.

The heavy vibrations suddenly stopped while Stevert paused in his thrusting, wide-eyed and a bit shocked.

"I-I'm sorry, did I hurt you? I thought you might find it pleasurable," the otter murmured with a swivel of his ears.

"Y-you were vibrating. Oh, God. Your cock was vibrating!" the wolf panted out, almost drooling. "Don't stop. Keep doing that, it felt incredible."

At the encouragement, Stevert perked and grinned, beginning the vibration once more. His cock was not only throbbing, but giving an intense rippling through the rump of his creator, stimulating the wolf's prostate. The otter gripped tighter to the squirming wolf while he drew himself back and forth, slamming harder as he moaned deeper and tensed up. His muscles bulked, rippling around Tachi and almost seeming to swell a bit larger.

The pleasure that was coursing through the wolf was too much to bear. From the excitement of their project actually working better than they expected to the vibrating penis in his ass, Tachi had to let loose. The eruption was a bit quicker than normal, cum exploding from the wolf's dick between himself and the huge otter in front of him. He howled and jerked, pressing himself down over the vibrating cock as sweat continued to drip from his face.

The orgasm surprised Stevert a bit. The pleasure was getting to him, too. He felt the clenching of that rump get tighter around his ass, but still he shoved forward, groaning louder and deeper as his orgasm edged. His body tensed further, muscles rippling and flaring, engulfing the wolf more while he pressed forward. His big, heavy nuts sloshed louder, almost seeming to gurgle before the otter snarled.

Stevert's orgasm hit, sending an eruption of heated, sticky liquid through the wolf. He arched and thrusted, roaring through the laboratory while his balls surged, pulling up and launching gush after gush of that semen through the wolf. He gripped him tighter as it launched for minutes and minutes on end. He felt the wolf's belly pressing outward against him, bulging further the more that it filled.

It would soon ebb away, however, later than Tachi's had. The wolf gripped onto the otter and panted, sweat continuing to coat his form while he was lowered by the otter. That cock pulled out, leaving it to slack and soften while Stevert panted. The wolf looked down and stared at the cock, reaching toward it and then slid his fingers over the head. The liquid was definitely semen. The wolf chuckled to himself and waddled to the nearby table, thumbing a bit of it onto a microscope glass.

Tachi then moved back and grabbed a nearby cleansing towel, wiping along the otter's member and down to his balls, lifting his head and pressing his face into that huge chest, kissing against it and panting out.

"You are a monster..." the wolf chuckled, "is everything in working order? Do you feel alright?"

The otter brought his arms around the wolf's waist, pulling him close as he kissed along that blond head and along his muzzle.

"Everything's 100%. I feel wonderful, pops," Stevert rumbled.

"You can't call me that in front of Bobert, he'll figure it out," Tachi replied with a chuckle.

There was a squeak nearby, both of them looking up to the staring bunny, who perked with a red face.

"O-oh, Nina. Sorry, I hope... ah... everything is alright," the wolf stated.

"E-e-everything's fine! A-Okay! That was great, I got a lot of good d-data... yes... I'm gonna... go take a break," she giggled sheepishly, slowly walking out of the room.

Tachi smirked, noticing her legs clenched together more tightly than normal.

"Feel free to take as long as you need, my dear," the wolf murmured with a chuckle as he walked back to the table, examining the liquid under the microscope. The sperm cells were wriggling about, alive and well.

"Astounding... we really did succeed," the wolf murmured with a huff.

The big pecs of the otter bumped against the back of the wolf.

"Is it that necessary?" Stevert asked with a chuckle.

"Of course, I have to make sure you function as an actual biological being--we nailed it," the wolf murmured, "you can have a child if you wanted it."

Stevert grinned a bit and then leaned down, giving a kiss to the wolf's cheek and neck, holding around his waist once more, as tenderly as a lover.

Tachi could feel his face going red again.

"Stevert, stop that. Go find Bobert. I'm sure he'd like to meet his brother," the wolf murmured with a sheepish chuckle.

"Sure. See you later, pops," he whispered, kissing his neck once more before trotting out.

"W-wait, put some clothes on!" Tachi called after him.

* * * * * * * * * *

After gathering up a white tank top and some blue swimming trunks, the huge otter walked down the street while adjusting his new shades. His eyes scanned (perhaps literally) along the walkways as he searched for the small otter he was made after. The large rudder tail flicked about behind him while he walked, smirking at the glances and stares he received.

He pressed his shades up once more and continued walking, taking a few sniffs of the air. A grin spread over his face, immediately walking faster toward the location of the source. His rudder tail continued to sway with his steps, soon sliding in the sand while he stepped onto the beach. His big feet made heavy prints, kicking up a bit of the sand while he walked toward the ocean. He looked from side-to-side, soon seeing Bobert wading around in waist-high water.

Stevert smirked and slowly pulled his tank top off, sliding it from his powerful body and tossing it near where Bobert set up his towel. He felt the stares of the beach-goers, but he didn't care. There was only one person he had his eyes on and he slowly waded into the water toward him. The water easily parted from his large legs, slowly moving up behind the smaller otter and casting a large shadow over him.

"Hey, little brother," the deep voice came from behind.

Bobert, who was holding a beach ball, blinked and turned slowly.

"Huuuh? Wha-holy shit!" Bobert gasped, stumbling back into the water at the sight of the massive male in front of him. He fell to his rump, eyes wide at the sight of his gigantic doppelganger before him. "What the fuck!" he squeaked.

Stevert blinked and tilted his head, rubbing it afterward and smiling sheepishly.

"I've been looking for you. It's been a long time," the big male murmured.

"Bullshit? I've never seen you before!" Bobert stated, standing back up in the water as he examined the huge frame, seeing the same-colored fur along his body, the cream under fur, even the brown hair on his head. He blinked a bit more, looking down to his beach ball and then at the package that was nearly triple its size.

"Nah, I've been around, lil' bro! Maybe you forgot," Stevert rumbled, leaning down and bringing his arms around Bobert's waist, lifting him out of the water.

"H-hey! Hey! Put me down! I don't know yo-mmph!" he grunted, suddenly caught off-guard by the male's lips against his own, taking him into a deep, heavy kiss. The smaller otter grunted, blinking as he felt the powerful hold and the lips against his own, almost falling limp in the muscular arms. He let it linger for a few more moments before he pulled back, huffing and pressing at the bigger male's face.

"Aw, what's wrong, lil' bro?" Stevert asked with a huff, watching Bobert's blushing face sputter and act as if he had tasted something disgusting.

"L-let go of me, you big oaf! I don't know you!" Bobert stated, squirming so much that he slipped out of the big arms that held him to the huge, hairy pecs.

Stevert grunted as Bobert slipped from his limbs, watching him splash into the water and dip below the surface. He grinned afterward, slipping below the water as well and watched his little brother try to swim away. However, getting down, the huge tail behind him began to move like a shark, swaying left and right, propelling him forward in pursuit. Within a matter of moments, the huge otter was nearing him, bringing his paws out to scoop the smaller otter up.

"G-god damn it, let me go! I don't have time for this!" Bobert cursed, trying to shove off those big arms while he squirmed again.

"C'mon, lil' bro! I just want to hang out with you," the big beach bum grunted, trailing his paws along the otter's form, even gripping that huge package as he drew Bobert's face against his massive muscled chest.

The small otter froze, feeling his groin being massaged while his face was pressed against the thick, hairy mounds. Bobert shuddered and groaned as his trunks began to fill with his fattening cock, though gave a squirm again while he tried to push away. The strong paw held his face into that crevice, however, making him smell in a strangely familiar scent. It was so familiar--it was almost like his.

"I'm not... your little brother," Bobert grunted, gripping slightly into that chest and pushing back a bit weaker, arching his swelling groin into that massive paw that so expertly moved along, "I don't even know who you are. Besides, even if we were, brothers aren't supposed to do that!"

"You are my little brother. I'm Stevert. We did all kinds of stuff together," the bigger otter rumbled, squeezing and rolling that fattening junk in those swimming trunks, feeling them stretching further while those fingers kneaded and massaged.

"I'm not," Bobert groaned, arching a bit harder before he felt the other squeezing him tighter, gasping out and arching before his muzzle was kissed into once again. He didn't pull back instantly, closing his eyes as his face reddened. The smaller mustelid kissed back a bit, squeezing against the huge mounds and gripping one of the black nipples capping those huge pecs.

Stevert rumbled and then arched a bit, himself, letting his trunks get pushed out by his swelling arousal. He wasn't feeling much reply from the smaller male, but he continued to squeeze and rub while he trailed his thick tongue into the smaller male's maw, spreading his lips and filling his cheeks quite easily. The big brother growled and stroked along Bobert's back as he held him close, arching his hips and rubbing his growing groin into Bobert's foot.

Bobert huffed and parted the kiss, squirming out of his grasp once more, but didn't swim away immediately. He looked to the big jerk and then swiveled his ears, starting to wade backward.

"Wait, lil' bro. I know something you like," the otter smirked, soon looking around.

A thick, bulky tiger was wading nearby, seeming to be a bit larger than the others around the beach. He had the stereotypical colors of orange fur and black stripes, minding his own business as he bounced along with the waves that were washing over them. He gave a grunt as he moved against Stevert, bumping into him. He snorted and turned with a raised eyebrow, gasping at the size of the huge mustelid.

Stevert immediately reached out and gripped him. He pulled the male close and smirked at his brother, winking before spreading his maw, suddenly latching onto the tiger's shocked face. The otter's maw pushed over that thick muzzle and head, immediately taking a swallow to lock the feline's head into his thick throat. Stevert gripped around the tiger's waist and arms, keeping him locked as he began to swallow the male down with ease.

Bobert's jaw went slack at the sight of the bigger otter swallowing down the bulky feline. His eyes followed the bulges moving down the huge neck and chest, watching them ripple with the tiger's squirming movements. He felt his cock throbbing harder down beneath the water, stretching his trunks even more. He reached down and tried to keep his cock from tearing through, but it wasn't easy. He continued to watch while the tiger was up to his torso in the otter's maw.

Stevert grunted and slurped heavily, thick sounds of gulping and swallowing echoing out. A few had saw the activity, gasping and distancing themselves from the carnivorous otter, but the otter only continued as he kicked his legs and tail to keep him afloat. He slurped harder, taking the tiger down further and further, waist slipping down while he closed his eyes and rumbled in delight. His stomach was steadily stretching below, bloating thicker with the bulges of the feline.

Whenever the bigger male closed his eyes, Bobert slowly backed himself away, though still stared with interest. He made sure not to make any noise while pushing backward, but he soon turned and began swimming away. He knew the splashes would alert his "brother", but he would be far enough to not be followed anytime soon. Stevert would have to finish off the tiger before he could pursue.

The huge otter perked and opened his eyes, seeing his little brother swimming back to the shore. He snorted and then gave a few heavy swallows, pulling the thighs of the tiger down, feeling his feet kicking and giving one last effort to escape. It didn't matter, however, since the otter's lips soon closed around those feet, taking the tiger downward and swallowing him fully, closing him off from the outside. He felt the bulges moving through his body, pressing his belly out more and more as he holds around it, filling fully before the last bulges met down below.

Stevert let out a powerful belch that rippled the water around him, almost causing a wave to flow toward the shore. He panted and soon swam slowly toward the sand, soon pressing his huge feet into it and moving forward. His member was bulging his trunks down, showing a bit of the black flesh that it originally hid. The tiger was squirming, leaving him to sway in his movements. Stevert let another monstrous belch erupt to cause the sand beneath to push away.

The otter held around his bulging gut while he moved forward, huffing as he stumbled now and then, taking in the scent off the air. Bobert's arousal was still apparent and he smirked, moving forward through the staring admirers while his belly slowed in its movements. A loud gurgle followed while the otter walked, soon stepping up to the pier and adjusting his bulging trunks. He licked his lips, rolling his belly a bit as the process began. The tiger inside was already softening, his form molding over while he licks his lips.

The big, cream-colored belly rolled and churned, audibly bubbling from the inside while he walked down the sidewalk once more. He soon ignored the diminishing form while he belched again, patting his hairy belly while his form throbbed. Veins slowly pressed to the surface of his flesh, showing through his fur as he bulked slowly. The otter was already adding the tiger to his body, pulsing bigger, slowly straining larger with every step he took. His muscles were tensing and his trunks were riding up his bulking thighs and against his fat package that was becoming more and more outlined.

For a moment, the otter had to pause and grip against a nearby lamp post while his body absorbed the essence of the tiger. He growled as the nutrients moved through his form, his muscles steadily increasing as the pleasure grew. He gasped and gripped the pole tighter, snarling while a few metallic creaks could be heard from his insides, though it soon sounded like bone, popping now and then while he snarled. Eventually, it all calmed while he gasped and panted, leaning against the pole while he licked his lips, shuddering while his body throbbed.

When Stevert released the pole, there was an obvious indention of his fingers in it, as well as a slight lean from his weight that had been put on it. With one more heavy rumble of a belch, the otter stood back up to what seemed like a foot higher, as well as a foot thicker in every direction. A few huffs followed, but he smirked and soon walked across the street to the corner arcade.

Bobert was standing behind a seated gorilla who seemed to have been there for quite some time. It was obvious that he had spent a lot of quarters, considering the dingy cup that was sitting beside him.

"Hey man, can I get a turn on there?" Bobert asked while peeking over the thick shoulder of the chubby monkey.

The gorilla gave a chuffing snort and bucked his shoulder backward, shoving the curious otter back, causing him to stumble.

"Oof! Rude!" Bobert snorted, having fallen back to the gigantic male behind him. There was a familiar squish to his back, making him wince and then swivel his ears, slowly looking up.

Stevert smirked down at his little brother, looking over his pecs at his smaller companion.

"Hey lil' bro. This punk giving you some trouble?" Stevert asked with a sudden, stern look.

Bobert thinned his eyes and looked up at the hairy pecs that hung lower than before. He reached up and felt against it, giving a chuff while he stood back up.

"Did you grow that fast?" the smaller otter asked.

"Sure did. I have a fast metabolism, after all. Now, as I asked, is this ass giving you trouble?" he grunted as he looked forward.

The gorilla gave a growl and looked behind him before giving a gasp and stumbling off his stool.

"Whoa! L-look man, I was just kiddin', he can play! He can play all he wants," the gorilla murmured with a sheepish grin.

"No, no, you don't have to! I can wai-" Bobert was cut off, watching the huge otter grip the gorilla around his collar, lifting him up.

Stevert was already spreading his maw, pressing his lips around the gorilla's head and then sinking down with a deep, heavy swallow. Like the tiger before, he gripped around the male's waist and began to pull him in. The players around the arcade took a few glances, some staring while the brute took down the well-known jerk of the establishment.

Bobert gave a grunt and huff of slight protest, but he crossed his arms and watched the beach bum taking down the primate. He watched with his previous fascination, staring at the neck of the otter bulging and rippling with swallows while he took the other down, watching that chest pressing out, down to the massive package that could barely be contained by the trunks.

The bigger otter gave a light pat of his huge paw on the smaller one's shoulder, giving a thumbs-up afterward. He swallowed and continued taking the chest and belly of the gorilla, feeling his chest tensing as he pulled him downward all the more. His belly stretched again, starting to fill with its newest meal. He leaned against the arcade machine, releasing the other from his waist as the gorilla tipped upward, sinking down with the aid of gravity.

The smaller otter gave a huff as he adjusted his stretching shorts again, slowly sliding onto the stool to begin his game. He took a couple of quarters from the cup and placed them into the machine, starting it up while he listened to the thick gulps and swallows from his brother on the side. He gave shudder while he started it up, pressing buttons and moving the joystick while he tried to ignore the big, bulky man beside him.

The heavy swallowing sounded out through the arcade, though no one tried to question the huge beast of an otter. The squirming gorilla was sinking past his thighs, then his feet, which tried to grasp onto the bulky male's muzzle. Unfortunately, the heavy swallows continued and Stevert pulled those feet in, slipping down and bulging that gigantic belly outward. After he finished, the otter let out a loud, deep belch as he leaned back against, grinning stupidly.

"Enjoy him?" Bobert asked, his face red while he tried to focus on his game.

"Eh, not as much as the tiger, but he'll do," Stevert replied, licking his lips while he leaned over, watching the screen while the smaller one played. He let another belch go while he pressed a bit closer to the smaller otter, letting his belly press against his back.

"Y-you're messing me up," Bobert huffed, pressing his elbow back against the huge gut, causing the gorilla within to squirm and press out. As the small otter felt it, he tensed and felt his groin bulge again, shorts creaking from the strain.

"Oh, sorry, I didn't mean to, lil' bro," the otter rumbled, bringing his huge arms downward to hold around the thin waist with his powerful arms. His belly was fully against Bobert, letting him feel the movements and vibrating gurgles running through it.

Bobert couldn't help it. His shorts ripped and his massive, black cock smacked against the front of the arcade, leaving him to whine as he squirmed somewhat. He tried to press back to shove Stevert away from him, but he only succeeded in pressing deeper into the folds and bulges of the diminishing gorilla inside of the gurgling tank. His cock was dribbling against the floor while he froze on the controls of the game.

"I'm not... your little brother..." Bobert panted while he squeezed the joystick of the arcade machine.

"Shh... I need you, lil' bro," he whispered into an ear, nibbling along the edges of it.

The smaller otter clenched up and groaned as a deluge of precum splattered with a few wet plops onto the floor. He almost broke the joystick before he released it, breathing heavily while feeling the bulges and movements of the gorilla all the more, becoming more frantic by the moment.

"You... don't need me," Bobert panted.

"I do, lil' bro. I always need you. I love feeling your cock against mine," Stevert whispered while his big paw trailed along the front of the smaller male's body, squeezing at the base of that huge, black cock.

"We've... never done that," Bobert grunted, his face heated as he pressed back at the paw, though his rejection was weak.

"We did it all the time, lil' bro. We used to fuck a lot. Hell, you even fucked me a lot," the bigger male growled, nibbling a bit more at that ear.

"I-I didn't... I've... never fucked you," Bobert whined, arching into that groping paw now.

"You want to fuck me, lil' bro..." Stevert whispered, squeezing it again as his belly softened, folding against Bobert's back a bit more.

"Yes... I do..."

"Do it, then."

Stevert's head moved forward, pressing his lips against Bobert's. This time, he wasn't pushed away. He felt his little brother's lips lock with his own, taking him into a deep, rather passionate kiss. It surprised him somewhat, but he continued, trailing his big tongue into the smaller male's maw, sliding along his tongue and into his cheeks, holding him tighter as his belly gurgled louder.

Bobert was lost in the scent and feel of everything happening around him. The belly that was gurgling down the jerk gorilla was starting to thin. He felt the throbs of those muscles, feeling them already beginning to bulge a bit bigger while they held him. The scent was so similar to his own. Everything felt familiar, yet... he knew he had never met this guy. Right?

The lip lock continued while Bobert's cock swelled, making a mess on the front of the arcade machine. He pressed a bit harder into the bigger male, starting to turn while he drew his arms around the broad neck. He squeezed at the huge delts, feeling Stevert pick him up against the gurgling gut while his black cock slid against it.

Stevert parted the kiss for a moment and let a belch go, huffing afterward and trying to catch his breath as he pressed his forehead along Bobert's sweat already trickling through his fur.

"Fuck me, Bobert..." Stevert whispered, "your big bro needs your cock."

Bobert grunted and slid himself from that big belly, reaching up and pushing against the bigger male. He grunted as he felt the huge body moving toward the wall, grinning slightly whenever he watched Stevert press against it. The smaller otter turned the bigger one around, pressing him forward against the surface. He knew Stevert was moving on his own--he'd never be able to move the huge beach bum by himself.

Stevert moved against the wall and panted, spreading his legs and letting his swimming trunks burst from his waist, massive cock slapping up his shrinking belly and the wall.

"Right here in the arcade, little bro?" Stevert asked in a huff, his large, wide rump exposed for the other to take.

"Mhm," Bobert grunted, soon shoving his big, black cock along that thick crevice beneath the huge tail of his brother. He didn't care that all of the arcade patrons were staring, some even passing money between each other for bets. What they were betting, the otter didn't care. He was about to fuck his "big brother" for everyone to see.

He wedged the big, black cockhead between the thick, muscular cheeks while he arched and pressed along his back. He breathed out and brought his arms around that broad waist, starting to shove forward while precum splattered and matted that backside. Bobert groaned as his cock easily slipped into that rump, though it still stretched and clung to him as if it had never been parted before. Bobert's eyes widened, shuddering as he pushed deeper, launching forward until he was hilted into him.

"W-what... nnngh... why are you so loose and tight... at the same time?" Bobert gasped, feeling those inner muscles working expertly around his member.

"Talent, lil' bro..." the bigger otter grunted, grinning back at him over his broad back.

The smaller otter snorted and slammed himself upward, grinding his cock deeply into his "brother", feeling that rump clench and squeeze like a vice. Bobert gasped, trying to pull back before he slammed up again, feeling those inner muscles rippling. It was a strange feeling, almost as if that rump was tugging at him, sucking him deeper as he arched. Bobert pressed his face along the broad, hairy back of the bigger male, starting to piston his hips back and forth.

"That's it, little bro... fuck your big brother! Nnngh... you're so big," the bulky otter gasped, spreading his legs a bit more as his belly finally showed those brick-like abs again. His body throbbed and rippled, beginning to flare in random places while he shuddered and tensed. Veins throbbed to the surface once more while he lifted his head back, gasping and groaning a bit louder, a bit deeper.

Bobert groaned and thrusted upward, letting his cock sink in and pull nearly all the way out, shuddering in delight. Precum was gushing, refilling that belly once more while his hands grasped the broad thighs of his big brother. He felt the muscles rippling and expanding bit by bit, taking on the gorilla's size and adding it to himself. Everything was bulking against the smaller otter, causing that rump to clench a bit tighter.

"O-oh fuck... you really do have... a fast metabolism," Bobert groaned while he brought himself back and forth, thrusting harder into his big brother while he jerked backward and forward. Every foot of his big otter dick was sinking into that broad ass, feeling it rippling and squeezing more, tugging him deeper with each throb of growth.

"Yeah... mmngh... feels good, lil' bro. Keep going," Stevert grunted, gripping into the wall and digging claw marks into the surface. He arched while his own cock splattered thick gouts along the wall, dribbling down in front of him as sweat dripped down his body, causing musk to rise through the room, only added by the smaller otter's. His cock was throbbing harder, pressing along the wall and seeming to grow bigger the more he was fucked.

Bobert panted and gripped along that broad back, feeling those powerful muscles ripple and press him backward while he grinded against that broad frame. He drooled and buried his face into that hairy back, groaning louder and humping deeper while his big, cream balls slapped messily into the bigger ones that pressed those bigger legs apart.

"Keep goin', lil' bro...! Nnngh... fuck! Harder!" the huge, beastly otter groaned out, cracks starting to form in the wall he was pressed against. More of his size increased, broadening as thick, boney crunches sounded from his shifting frame. Even his hair seemed to bristle and thicken in key places, causing his scent to only amplify.

Bobert growled and slammed harder, his balls sloshing and slapping further while he gripped to that waist. He felt that rump clenching and squeezing, tugging that cock harder, almost sucking that precum from his member now. He arched, sweat continuing to drip from his own form while he clenched, gripping more while his orgasm approached.

Similar to how his cock vibrated with Tachi earlier, that rump began to shift and squeeze. A vibration began, leaving the smaller otter to gasp and grip against that waist.

"W-what... what are you doing?" Bobert whimpered, grinding harder as his eyes widened.

"Don't mind that, lil' bro... just keep doin' your thing," Stevert replied with a few gasping grunts.

The vibration continued, leaving Bobert gasping louder, grinding harder while he slams deeper, and feeling the tingling, pleasant sensation going through his waist and balls. He tensed up, his body seizing while the vibration grew more intense, soon yelping out and howling in bliss, screaming as his orgasm erupted from his gigantic cock. Gallons immediately gushed through his urethra, ballooning out the bottom before it erupted into Stevert's backside.

Stever let out a louder, deeper groan as that cum erupted, feeling his body being filled from the powerful eruptions. His inner muscles rippled, sucking up that cum through his rump and immediately depositing it into his belly. It bloated out once more, bulging bigger and bigger while he squirmed slightly, tugging at that cock with his flexing bottom. More and more gushed through, his belly steadily flaring while he bit his lower lip.

"Fuck... fuck, lil' bro!" the huge brute snarled, grinding back while his belly began pressing him back from the wall, leaving him to gasp and arch. His cock was throbbing, only trickling precum while his rump gripped and tugged. It was almost as good as doing the fucking! His inner muscles rippled and he pressed back, arching a bit more to let his belly swell below, sinking toward the ground.

Minutes passed and the small otter's orgasm slowed to a dribble. Bobert slowly pulled his member from that rump, collapsing against the back of the larger man, holding himself up at that waist. His panting was rough, but he reached around and squeezed along the other's big black dick.

"What was that... vibration...?" Bobert asked weakly.

"Something I can control my muscles to do is all," the bigger man murmured, slowly turning while his cock throbbed in front of him.

Bobert immediately gripped onto the massive member, squeezing it and stroking both arms around it. He hugged it and kissed along the bottom-side of the member, feeling the huge male tense up.

"A-ah, lil' bro, you don't... have to," Stevert panted, swiveling his round ears while he watched the smaller otter work at his member. He groaned and arched, his huge three-and-a-half foot cock throbbing harder and dribbling more precum while he leaned back into the wall, slowly sliding to his thick rump. His belly gurgled, sloshing with so much of Bobert's liquid.

Bobert ignored him and continued to rub and squeeze, stroking over it and watching the bigger otter's face with a smirk. He pumped it while hugging it, stroking against it with his entire torso. He kissed and lapped at the massive head, closing his eyes while some of that precum spilled over his face. He panted, swallowing it down while he used his thighs to roll the massive orbs below.

Stevert was squirming all the more, arching and groaning in bliss while he spread his legs. He had forgotten that they were in a building with people, and as such, only moaned louder. He grinded against his little brother, bringing himself closer and reaching out to squeeze against his body. Stevert squeezed Bobert's form to his cock, starting to pump and slide his massive, throbbing member along that body, looking down into that face while he panted.

Lowering his head, he kissed against his brother's muzzle, tilting his head and lapping into his maw while he felt the pleasure increasing bit by bit through his cock once more. His balls churned while his belly sloshed, but he slowly pulled back with strings of saliva trailing. He leaned back against the wall and let his brother get him off, gripping into the floor as he arched and thrusted into the grasp.

Bobert returned the kiss once more, tilting his head and letting their tongues graze. Even if this big guy was crazy, he had to admit he was amazing. The huge otter looked and smelled just like him, except he was bigger. He would have to find out a way to tell if they actually were brothers or not. That was in the back of his mind, however. He had to get the huge lug off for providing such a pleasurable fucking.

"Lil' bro... I'm about to blow..." the big otter gasped, clawing against the floor a bit more.

Still, Bobert ignored him and continued to pump as if nothing had changed. He felt the huge balls below pulsing against him, straining along his form while he rolled his thighs against them, reaching out to press and roll that big, bloated belly he helped make. He squeezed into it with a grin before he went back to pumping that huge, black cock.

The small otter spread his maw and sealed around the fat cockhead, slurping his tongue through the slit and letting it gush into his maw directly. He closed his eyes and sucked, slurping firmly and rolling his body a bit harder, feeling the huge dick getting more and more turgid. He squeezed along the neck of that cock, growling to vibrate a bit against it.

Stevert bit his lower lip before he threw his head back, roaring out his pleasure as cum erupted up through his cock. The bottom bloated out similarly to Bobert's, causing the slit to spread and unleash a volcano of semen. He squirmed and arched, entire body tensing with his muscles rippling. His belly seemed to slack bit by bit as he expelled his own liquids, arching a bit harder while he nearly punched a crater into the floor.

Minutes and minutes went by as he gushed, Bobert still swallowing down all of it. The smaller belly swelled as well, but he soon had to pull off to gasp for air, causing the arcs of white to splatter along the floor and some of the arcade machines. It began to flood and pool out of the door of the arcade, gushing and gushing as gallons flooded through. He humped and tried his best to stabilize his movements, but he ended up sinking into the floor a bit more.

Eventually, his orgasm slowed, turning into a trickle while he shuddered and panted. His tongue lolled while he leaned his head back against the wall, trying to catch his breath. He slowly sat back up and looked down at his coated little brother, smiling sheepishly.

"Did you... have fun, lil' bro?" Stevert asked with a crooked smile.

"Mhm. Did you?" Bobert asked, wiping his face and slowly standing up as he dripped with the other's semen.

"I had a blast. We have to do it more often," Stevert murmured, pulling the small otter closer with his huge arm, trailing his big, thick tongue over his face to clean him.

Bobert sputtered and shoved against that big face, grinning a bit. He shook a bit of the cum off before he slowly pulled himself away from the other's grasp.

"I'm gonna go get cleaned up," the smaller otter stated, starting toward the door.

"W-Wait, Bobert! Can we... hang out again soon?" Stevert asked with a tilt of his head, drawing his long bangs back.

Bobert was almost taken back by the innocent, hopeful expression on the big male's face. It was authentic. Bobert felt as if he didn't want to disappoint him.

"Yeah, we can," he murmured, walking back to give the big male a kiss against his muzzle.

After the smooch, the small male trotted out of the messy arcade, gripping something in his paw, unseen by the big otter.

Stevert grinned a bit, soon standing up and then looking around at the staring people in the arcade.

"Uuuh... I'll have someone pay for the repairs," he called to the owner before ducking out of the building.

* * * * * * * * * *

After getting some clean clothes and washing himself off, Bobert took the cup that the gorilla was using for quarters; there was quite a large amount of semen inside of it. Bobert looked down at it and the other vial he had his own semen in, humming to himself while he walked toward the nearby laboratory. Luckily, there was a DNA testing facility not too far from the beach.

"Excuse me, do you guys do siblingship tests?" the small otter asked, looking to the secretary behind the glass as he approached.

"Of course. Do you have samples of the subjects?" the labcoat-wearing lioness asked.

"Yeah. U-uuh... I didn't have time to cork the other... but here you go. Sorry," Bobert murmured, pushing the vial and cup through.

"Geez, son," she murmured, looking at the two. She gave a shrug and took them after putting on some gloves. "Well, with this much, it'll only take a little while. Have a seat."

Bobert nodded and then slowly moved his way toward the sitting area. He kicked his feet as he looked down to the floor, flicking his ears and then looking to the clock. Minutes passed, but he didn't seem to notice until the lioness called for him to come to the desk.

"Here you are, sir. These results are 99.9% accurate, so if it's not an answer you wanted, I do apologize. That'll be $75, if you please," the lioness murmured with a tilt of her head.

Bobert reached into his pocket and pulled out the proper amount, pulling the "confidential, private" envelope to him afterward. His fingers fumbled with the clasp, pulling it open and pulled out the paper inside.

"What...? No way. This isn't... this can't be right," Bobert said, looking to the lioness.

"It is, sir. Have a good one," she murmured before going back to her work.

Bobert looked over the test results and rubbed his head and stared in disbelief. He wasn't sure what all the numbers meant, but there was one phrase that he understood.

Full siblings. Probability of relatedness: 98%.