FSE

Furry search engine

formerly SoFurry search engine

"You've got to try it. U-sleeves are the latest and greatest thing!"

Percy gave his friend a baleful look. When the wolf mentioned to his old friend that he had just gone through a break-up, he had not expected the response to be an enthusiastic endorsement of a sex toy, much less a sex toy that would cost Percy a good chunk of the money he had been saving up. "This a personal recommendation, Nesh?" he asked.

Anesh (just Nesh to his pals) nodded enthusiastically. "Sure is," the serval said. "You would not believe how good it feels. It's not just an alternative to sex. It's better than sex!"

"How would you know?" Percy was half-joking. Nesh's lack of success in relationships was legendary when they were in high school together. The serval hadn't even managed to ask a girl out on a date before. The serval got completely tongue-tied at the merest hint of something immodest. His sudden endorsement of a sex toy was unusual in the extreme. Percy wondered if the serval had really changed that much since they had both graduated high school? Had Percy changed as well?

"Hey, Perce, I understand the put-down, but you have to understand, you are looking at a cat who gets all the action now."

"What, seriously? Nesh the Bashful finally lost his virginity?"

"Lost my virginity? Shit. I got laid four times last week alone."

"You?"

The serval put his hands on his chest as though he had been grievously insulted. "That was hurtful, and if I wasn't your friend, I'd kick your ass for that."

Percy laughed and clapped the smaller serval on the back so hard the feline nearly fell over. "No, no, I'm happy for you."

The serval playfully dug his elbow into the wolf's ribs and then dug back into the plate of nachos they had both been enjoying. While he ate, Percy stared at him. It sure seemed like the same serval he'd known: he had the same constant manic energy that drove him to bounce his leg, or tap his toes, or drum his fingers, or flick his ears all the time. The serval was certainly smiling a lot wider now though. Maybe whatever this thing was it did the trick for him. "I don't know, Nesh. It's real expensive."

"Tell you what." The serval wiped a loose bit of nacho cheese off his chin with the back of his hand and then groomed it off. "I'll make you a guarantee: if it's not the most amazing thing you've ever tried, I'll pay for half of it."

"Where did all this money come from?"

"My little secret."

"Fine. It's a deal."

* * *

The box arrived in Percy's mailbox almost exactly a week later. The wolf lived just off campus in a little apartment complex that was still managed partially by the university. Although the label had said it was discreet, Percy nevertheless shoved the bundle under his jacket and practically ran to his apartment so no one could see his secret shame.

Inside, the wolf sat down and began to slice the tape holding the box shut. He had spent the whole week feeling so stupid at being talked into spending this much money. Percy had spent his life sagging under the weight of the dumb jock stereotype. Percy was big, and he was broad, and yes he did manage to get into college on a wrestling scholarship, but he wanted to prove that he was more than that. He maintained a respectable B+ average in chemical engineering, had a small job helping out at the library, and even when it came to dating, he had opted for a drama nerd specifically to avoid the cheerleader cliche. At least their break-up had even been amicable. He and Rebecca still talked. They just didn't fuck anymore.

So it irked him to spend a huge chunk of his money on a toy; he should know how to manage his finances better than this. The wolf had spent much of the week tracking down reviews of the product as if to assuage his own nervousness. He expected to find someone, somewhere complaining about what a heap of overpriced junk it was, so that he had an excuse to ship it back before he broke the seal. He did not expect to find universal praise. The constant refrain was simply, "It's worth it."

Percy sighed and drew a claw along the tape holding the outer brown cardboard box together. Inside was a clean white box which declared it to be a "U-sleeve" in large silver embossed letters. Instead of an instruction manual, it had a small QR code for the app and then there was the U-sleeve itself, in its protective wrapping. Percy started the app downloading on his phone and carefully peeled the wrapping off.

It appeared to really be a sleeve made out of some black fabric Percy had never seen before, but it felt soft as silk in his hands. At first, the wolf thought he had paid for an extremely expensive sock to jerk off into, but the product had promised neural interfacing, so whatever new tech there was, maybe it was just too small for him to see.

The app finished downloading, so Percy opened it up.

"Welcome to the world of U-sleeve," the app cheerily declared in a voice loud enough that it had the wolf scrambling for the volume control. He flicked his ears from side to side, but couldn't tell that any of his neighbors had heard. "To begin, please hold your U-sleeve close to your phone and tap the blue button twice."

Percy turned the sleeve over and saw there was a small blue circle on the back side. He wasn't sure how he was supposed to press it. It looked like it was just painted on. The wolf sighed and tapped the circle twice.

A glow spread across the U-sleeve revealing faux oversized circuitry in silhouette underneath the fabric. Then the glow faded. His phone buzzed to let him know a connection had been established. "Now it's time to get you sized. For this you will need to be naked and hard. Tap the blue button again when you are ready to proceed."

Getting naked was easy. Getting hard was not. The wolf took the U-sleeve and his phone into his bedroom and sat on the edge of his bed. He rubbed at his sheath, trying not to think of how he was getting a stiffy for a toy that looked like a black sock, trying not to think of how much money he had spent, trying not to think of whether or not the neighbors could hear. Eventually his mind focused on his old flame Rebecca and he began to ease out of his sheath. He gripped the base of his cock and ground his fingers against it to firm himself up. Despite his stress, it had been three long horny weeks of not getting laid, and he was desperate for some action, no matter how much it had cost him.

Once he felt he was ready, he fumbled with the U-sleeve to tap the button again. Another flicker of light across the surface this time formed itself into an animated image of a shaft sliding into the device, indicating the right way to put it on. "Okay, that is a little cool," Percy said. In the few seconds he had taken his concentration off stroking himself, he had started to wilt again, so he gave himself a few quick jerks before inserting himself into the U-sleeve. It felt truly heavenly. Honestly, he would have felt content to rub the U-sleeve over his length like the world's most expensive masturbator, but he did want to see what all the fuss was about.

"Make sure that the blue button is aligned on the underside of your shaft. Once you are in position, tap the button twice again."

Percy meticulously made sure that the U-sleeve was centered along his shaft before pressing the circle. The device seemed to ripple along his length and then tighten. Percy had no idea what tech they were using, but the excess fabric just seemed to disappear, leaving the U-sleeve so tight over his length that he could see a pulsing vein along the side of his shaft, a very needy pulsing vein. His shaft flexed a few times from the attention of the U-sleeve tightening.

"Wow, you're a big boy," the app said jokingly. "You must be real popular!"

"If I were that popular, I wouldn't need you, would I?" Percy said, knowing the app could not hear him.

"The U-sleeve uses a proprietary bio-bonding procedure to keep itself in place. Don't worry, the bond does not hurt you and requires power, so in the event of a malfunction, simply wait for the U-sleeve to power down and remove it."

Percy's cock flexed impatiently.

"I bet you can't wait to try out all the U-sleeve can do," the device said, as if feeling the flex. "For now, we recommend trying a simple simulated sex scene. Please answer the following questions."

Percy growled and punched in some quick answers to the rather intimate questions. What gender of partner did he want? Female, of course. What type of sex did he enjoy most? Vaginal. Desired speed and force? Full speed, half force.

"Are you ready to see what the U-sleeve can do?"

"Yes, fucking start already." Percy activated the sequence by tapping twice on the blue button.

A few seconds passed with nothing seemingly occurring. Then a red glow began to emanate from the U-sleeve near the tip of his cock, which stuck out from it. Percy felt a tingling along his tip, a feeling he did not know quite how to describe. Then the red glow dropped like a rock to the base of his shaft, and as it fell, a sensation swept down his shaft, as though Rebecca were there with him right now and had just slipped all the way down his length. He stared at his own cock, unable to believe that the only thing on him was a simple black sleeve. He could feel the heat and wetness of her and the way she instinctively squeezed around his length.

The red glow began to bounce along the length of the U-sleeve and to Percy it felt like he was being ridden hard, an eager partner bouncing wildly but not quite slamming hips together, just the way he had told the app to go.

Percy fell back on top of his bed and clutched at a pillow to smother his moans. This was exactly what he needed. His cock leapt to the phantom touch and made him jerk his hips in needy thrusts up into the air. Maybe the U-sleeve could tell what he was doing because the sensations increased in intensity, squeezing ever tighter around his length.

The orgasm hit Percy in no time at all, with a deep thrust up into the air and a twitch of his shaft that sent an arc of his cum shooting over his head and landing on the wall behind. Percy felt so light-headed in the aftermath that he barely had time to acknowledge the app thanking him for trying out the basic features of the U-sleeve.

As Percy lay on his bed panting, all he could think about was what the hell the advanced features must feel like.

* * *

By the end of the first week, Percy agreed with Nesh and all the online reviews that the U-sleeve was well worth the money. He found himself using it three times a day, cranking one out first thing in the morning, once when he got home after classes, and then again before bed. Each time the orgasm felt like one of the best he'd ever had. He would vary the speed and intensity of the simulated sex to match his mood, but still he hadn't bothered with the advanced features. There hadn't felt like a need.

The U-sleeve came with an added bonus. Percy could wear it all day. The U-sleeve defaulted to "chastity settings" when taken away from the place it was first activated, Percy's apartment in this case. In that mode, it would not allow the wolf to get hard or even let out a single drip of pre, quite handy for when he was distracted with sexy thoughts all throughout class and didn't want to pop a boner in the middle of polymer chemistry.

Then it broke.

The next Saturday morning, right when Percy felt keen to try out the advanced settings, the app refused to connect, saying there was an issue. Percy spent a frustrated two hours horny out of his mind and unable to use his new toy. Worst of all, he couldn't even jerk off, with the U-sleeve stuck in chastity mode and still bonded to the skin of his dick. He thought he would just wait out the battery, but by noon, he was mad with lust and unable to do anything about it. The wolf had one hand in his groin, rubbing at a sheath that didn't respond while he searched for any support help.

Then, as if in answer to his prayers, his app sent him a notification, saying, "It looks like you are having issues with your U-sleeve. Would you like to contact a technician?"

Percy pounded the yes button so hard he worried he would crack his phone's screen.

"It appears there is a technician in your area. Please go to the following address."

A technician? The thought of meeting someone while he was like this broke through the lust-drunk fog of his mind, but several minutes of completely ineffectual grinding against a pillow told him he had to do something. Percy took a cold shower and soaked the frigid water deep into his pelt before drying off. That returned a touch of his mind. The wolf followed the instructions on his app, which led him right back to campus, or rather to one of the outlying buildings, a small brick and mortar thing built in the 60's that wasn't even labeled on the main campus map.

Percy felt a wave of anxiety. What if the technician was a teacher? What if they were a student? Was that better or worse? He told himself he'd see who it was and if he didn't like it, he'd just back out.

Carefully Percy entered the building. It was a long sterile hallway with no signage other than simple room numbers. It looked half abandoned. An old CRT monitor sat in a cardboard box just outside one of the doors, next to an even older Apple II, both far too old to worry about anyone stealing them. Percy glanced at his app and saw that it was directing him downstairs. He followed the path into a dimly lit corridor, although this one was at least kept clean.

At one of the heavy metal doors, the wolf stopped, looked sheepishly around himself and knocked.

The door opened after a bit of clanging and banging from inside, and the smallest ram that Percy had ever seen opened the door. "Hi," the ram said in an animated voice. "You looking for a technician?" He held up a phone showing off the U-sleeve app.

Fuck. There went any hope of backing away. "I am," Percy said quietly.

"Come on in." The ram swung the door wide and allowed Percy to come in. The room seemed a junkyard of old computer equipment, huge plastic tubs were full of outdated hard drives and spare bits of RAM. Percy smiled at that, a ram with RAM. He jumped a little as the big door swung shut behind him with a bang and was locked.

"Nice to meet you," the ram said and held out a hand. "Call me Cyr. It's short for Cyrus."

"Percy," the wolf said and shook the hand. "It's short for Percival." He glanced into the corner of the room and spied a mattress thrown onto the floor next to a fridge. "Do you... live down here?"

"What?" Cyr spun around and the wide glasses perched on his muzzle threatened to go flying off. "Oh that. No, no. I just live a ways out of town. It's sometimes easier just to crash here for the night. Not like the profs mind. Anyways, what sort of problems are you having with the U-sleeve."

"It's failing to connect," Percy said after a pause. "And I can't get it off."

"Common glitch. No worries. I may be a junior U-sleeve tech in my spare time, but I get all the best analysis tools just the same." Cyr stepped over to his main desk, cluttered as it was with all sorts of computer gear and soldering equipment that Percy only vaguely understood the usefulness of. He picked a device that looked like a remote control, pointed it to Percy's groin, and tapped a control.

It was like a switch had been flipped. Instead of the cool nothing against his cock, he could suddenly feel every single bit of texture of his jeans through his underwear and sheath. In an instant he was getting hard, and there was a huge bulge in his pants as his shaft stiffened sideways underneath them. "Fuck," he said, and couldn't stop himself from grinding back and forth a little in the air. He reached down as if to hide himself but used the motion to squeeze his length. "Wait. Something's wrong still."

"What's up?"

"I can feel some things, but I can't feel anything else." It was maddening. He tried to stroke himself through the jeans. He could feel the fabric of the jeans themselves in incredible detail, holding tight against his shaft, but he couldn't feel the movement at all. This was almost worse than the chastity mode.

"Huh." The ram sat back in his creaking office chair as he thought. He idly rubbed a thumb against one of his horns as he pondered the problem. "Neural interface must have been knocked out of alignment. If that's the case, I can fix that. I'll need to see what I'm working with though. Whip it out. No need to be shy."

Percy unzipped himself before he knew what he was doing. He'd come all this way. Made sense to just pull his dick out right? His shaft swung in the air, dripping pre as though he had been waiting all morning for this, which he had.

"Whoo, you're a big boy, ain't ya?" Cyr grinned and adjusted his glasses as he looked over the wolf's shaft. The ram sat down at his computer, spun around and began to type quickly into a command prompt. "Step on over here."

Stiff-legged, Percy came in close, his cock hovering just over the edge of the ram's desk.

Cyr reached out and gently touched the side of the wolf's shaft. Then he clicked a button on the computer. Immediately the feeling of the finger went from a dull sensation to one fully realized.

"I felt it!" Percy said in relief.

"Hold your horses. Need to run a lot more tests just to be sure. Stay perfectly still."

The wolf had trouble doing that. The ram fondled him in all sorts of ways--strokes, taps, squeezes, caresses, tickles, and more--and each way was enhanced by the neural interface of the U-sleeve. Oh, all the agony of this morning was worth it for this moment right here. He had never realized his dick could feel so heavenly. He was shuddering, his tail curled high. His tongue lolled out of his mouth in exaggerated happiness.

"All right. Looks like external stimulations are synced up. Now we have to do internal." He called up some program and turned his speakers on. A rhythmic clicking sound from a metronome program came up. "Okay, in a moment I'm going to tell you to start. When you do, you need to thrust to this beat and exactly this beat. Too fast or too slow and we won't get proper synchronization and that would be bad. Ready?"

Percy shivered. He couldn't believe he was about to do this, but it felt too good to stop. "Ready."

"Start."

The beats started off slow and easy, too slow for how desperate the wolf felt, but he obediently thrust forward into the air. Although the ram had let go, the glowing red ring had returned along the U-sleeve and slid up and down over the wolf's length in a phantom touch as he moved. Whenever Percy started to move off-tempo, the red ring grew fuzzy, and the sensations along his length similarly diminished. It required almost mechanical precision and a level of concentration that wolf wasn't used to outside of his wrestling training. If he thought of it that was, as just another kind of training, it made it easier. The clicks of the metronome started to speed up and eagerly Percy thrust at a quickened pace, humping at the air.

"Need you to go a little harder, there, bud," Cyr said.

Percy grunted and gripped the edge of the desk so he could have a bit more purchase. He started to shove his hips forward in hard sharp thrusts that bumped his legs against the edge of the desk. Cyr didn't seem to mind. "Good. Now faster."

The metronome sped up again. Percy had to grit his teeth as he tried to go as fast and as hard as Cyr needed him to. And still the metronome went faster. All other thoughts got shoved out of his mind. He had to keep up. His thrusts rocked the desk and sent a loose box of paperclips tumbling to the floor. There was only one problem. "I can't... cum."

"I know. We need to finish calibrating first, so I'm locking down your orgasm. Don't worry, it'll be soon."

Percy clenched his jaw tighter as he kept thrusting. It felt like he was hovering right on the edge of climax, ready to blow at any moment and he was sure this thrust would be the one to push him over. No this one. No this one. No this one.

Finally, he heard Cyr type out a command and it was like a floodgate released. Percy snarled as his orgasm crashed over him and ropes of seed jetted from the tip of his shaft. He stayed there, growling, his claws digging into the wood until he could finally regain his composure. He saw Cyr staring at a small pencil container that was laying on its side. It had been knocked over not by him rocking the deck but by a bullseye hit of his orgasmic release which now dripped down the side.

The ram looked up at him with a grin. "Oh I like you! I don't know if that's from diet or exercise, but whatever it is, keep it up."

Percy gave an exhausted thumbs-up.

Cyr scrounged through the room and came back with a small damp towel for Percy to clean himself off with as he himself sat about cleaning his desk. "That should be it, all recalibrated. You're set to go."

Percy gave another thumbs-up, as though completely oblivious to the fact he had just done so. Tiredly he tucked himself away and zipped up. As he began to shuffle towards the door, Cyr called out to him, "Now that it's fully calibrated, the U-sleeve app will be able to tell the perfect times for you to get off. I'd suggest following its instructions. You'll have an even better experience that way."

* * *

Percy napped in the afternoon, but when he woke up, he felt... he felt all right actually. He considered giving his U-sleeve a test run just to make sure it hadn't broken again, but when he called up the app, it had a message for him. "We have calibrated that the optimal masturbation time will be in one hour. You can use your U-sleeve now. But we recommend waiting."

The wolf shrugged. Sure, he was horny, but he wasn't that horny, not anymore. And besides, he wanted to see if the ram's final comment to him was right.

So he did his chores around the apartment, ran his bedsheets through the wash, cleaned up the kitchen, checked his email, and even vacuumed. When he was done, the app was chiming to let him know it was time. It suggested an advanced simulation and Percy eagerly agreed. The app directed him to get onto all fours, which, after a moment's hesitation, he did.

When the simulation started up, it felt like someone had wrapped their fingers around his shaft and was giving him the best handjob of his life. Immediately Percy was panting and groaning and grinding his hips into that touch. His brain floated on rolling waves of bliss provided by each stroke. He had hardly noticed that the hands were guiding him into making thrusts in a particular rhythm, or that the app was slowly whispering to him, "That's a good boy," over and over. His tail wagged in mindless happiness, even at the silly name the app was calling him. It just felt too good for him to care.

His orgasm this time came not with a sudden explosion, but with the slow plodding approach of a wave crashing onto a beach. It came over him with a deep sigh that left his whole body feeling like jelly, happy stupid jelly.

From then on, he resolved to try whatever new scenarios the app recommended to him. He also activated a setting on the app that let it inform him of an "optimal masturbation time" by unlocking the chastity setting. It also had an alarm clock setting that he found quite intriguing. He barely slept at all that night, in anticipation of how it would feel in the morning. Sure enough, he was woken up by the sensation of a tongue dragging along his length. It was so real he had to check under the sheets to make sure he wasn't still dreaming, but no, all that was there was a hard wolfcock with a snugly fitting U-sleeve around it. He'd never had head that good. Rebecca had indulged him a few times, but wasn't that skilled at it.

While he wanted to get off at noon, the app informed him his next optimal time was not until that evening, so he happily did his schoolwork all day and waited for the time with growing anticipation. When his shaft was unlocked just after he finished dinner, it immediately leapt to attention. Percy eagerly accepted the app's recommendation without waiting to see what it was. He wanted to surprise himself. The app directed him to stand facing a wall, to put his arms up on it and lean forward as though he were about to fuck his partner right there. He did, and felt a red ring of pressure against the tip of his shaft.

There was something different about it this time, and as he pushed in, that ring slipped down low on his shaft, clenching and squeezing in a most delightful, but unique way. The wolf humped his invisible partner several times just relishing in the pleasure before finally holding the phone up to his face and seeing what the scenario was.

"Anal pleasure 14," it read.

Huh, so this is what anal was like, the wolf thought. Rebecca hadn't been willing to try that. His loss, because holy fuck was this great. He'd never really thought of himself as an ass guy before, but that was rapidly changing as he shoved in deep again and felt that ring respond by tightening around him. The app started to direct his thrusting speed and intensity in a firm voice. After several minutes, the app beeped loudly and informed him it was time for him to tie his partner. Percy shoved his hips forward and felt resistance from the ring as it tried to pass over his knot. He tried again and again, and then managed to get the right angle so that his simulated partner slid all the way down onto his shaft. The wolf clenched his hands into fists so he did drag his claws in furrows down the apartment wall. It no longer mattered how hard or how long his thrusts were: the ring no longer moved except to squeeze the base of his shaft. By that point, the stimulation hardly even mattered any more, and he came a few seconds later.

Although it was barely 7:30, the wolf cleaned up the mess he had made in a happy, hazy stupor and collapsed into bed for an early night's rest, being sure to set his U-sleeve alarm for the following day.

The week flew past in a flurry of pleasure. The U-sleeve always woke him up, but it didn't always get him off, informing him that his optimal release time was later. It left the wolf feeling horny and needy, but that wasn't a problem with the U-sleeve chastity mode preventing him from popping a hard-on in public. The actual release times varied throughout the day. On Wednesday, Percy was surprised to feel himself getting hard in the middle of a chem lecture. He excused himself to go to the bathroom, clutching his bookbag in front of his groin as he tried to hide his erection. There, the app said that now was his optimal release time, but if he was busy, he could chose an expedited pleasure option. Thinking of the lecture notes he was missing, he agreed and nearly whited out as a ramrod of pure erotic energy seemed to pierce his shaft. The intensity of the sensation left him staggered for several seconds. He shook his head to find that he had sprayed the back of the toilet seat with his seed. The wolf quickly wiped things down, taking longer to clean up than it had to get off, and whisked himself back to his lecture.

Friday the app recommended not getting off at all, so Percy spent all day in a lust-driven haze, finally falling asleep with a pillow between his legs, grinding away despite his shaft not feeling anything.

* * *

"So, what do you think? Was it everything I claimed it was?"

"And more."

Nesh reached out with the beer bottle he was holding and Percy clinked his own against it. They were relaxing in the wolf's apartment Saturday morning.

After taking a swig, Percy said, "It's amazing. Those first few weeks after Rebecca and I broke up, I couldn't stop thinking about all the things I missed from when I was with her. And now, it's like I can't stop thinking about all the things I missed because I was with her."

"U-sleeve really opens your mind to possibilities, doesn't it?"

"You said it." Percy took another, longer draught.

The two friends laughed and drank and snacked on unhealthy chips until they both suddenly looked uncomfortable. Percy felt his cock getting hard and looked down to see a similar tent showing up in Nesh's pants. "You too?" the wolf asked.

The serval crossed his legs and gave a tipsy smile. "Hey, it's not like U-sleeve has ever been wrong before. Optimal release times and all that."

"Oh I know." The wolf pulled out his phone and checked the U-sleeve app. An extra message showed up this time. "It's suggesting I go visit my local technician for maintenance."

"So is mine," said the serval, staring at his phone. "Hey, you want to go together?"

Percy's head felt funny. It was all the beer this early in the morning. "Sure, why not?"

* * *

Cyr opened the door to his basement office to the wolf and serval, inviting them both to take a seat inside. "Hi, guys. This shouldn't take long," he said. The little ram practically pushed the two friends into their seats, then ran about the cluttered office space collecting the things he needed, dropping them off at his desk before grabbing an item that looked like a handheld sensor from an old sci-fi movie and pointed it to the serval's groin.

Although he didn't need to, Nesh spread his legs wide and gave a flirtatious wink to the ram, who was too busy to notice. "Everything is looking good, looking good," he said half to himself, idly rubbing his horns once again. "Yep, software is up to date and there are no issues."

Then Cyr turned the sensor on to Percy. The wolf expected to feel something but nothing happened on his end. His shaft stayed firmly in its numb chastity state that he had locked himself in before leaving the apartment.

"Looking good," the ram repeated, and then his eyebrows shot up above his glasses. "Oh, I see you've been enjoying that scenario a lot."

Despite his size, the wolf felt himself shrinking into his seat, ears splayed. Cyr had to mean the anal fantasies that the wolf had been playing non-stop the past week.

Cyr, oblivious, kept tapping away on his computer. "Hm, looks like you haven't tried the training regimens yet though."

"Oh, you have to!" Nesh said, slapping his friend on the shoulder.

Slowly, the wolf's ears lifted back up. "What's a training regimen?"

"So, like, have you ever wanted to be better at sex in a specific way? You could have better staying power, or more powerful thrusts, or whatever it is you like. The app has a number of training regimens that it can put you through so you can get better at it. Nothing like the promise of a mind-blowing orgasm to convince you to commit to a program, eh?"

"Right. So what have you been training for?"

"Oh." The serval's face broke in a wide, slightly drunken smile. "Pegging!"

"What?"

"Oh yeah. It's what the app recommended, and it's not like it's been wrong yet. So I gave it a shot. Had to go buy a separate dildo and all, but once I got used to it, hot damn, it felt great! Best way to have sex yet in my opinion."

Percy's jeans suddenly felt tight. He looked down and saw a throbbing tent forming in them and he heard the chime from his phone which he had learned meant it was an optimal masturbatory time. "Really?" Percy's mouth was dry. He found himself licking his lips hungrily. He'd spent a whole week learning to enjoy anal sex and now there seemed to be a possible opportunity to try it. Right here. "Would you ever be interested in... I mean, would you be willing to try... letting me... with you...?" It felt like there was a hand on his shaft, groping and teasing him, encouraging lewd thoughts and phantom sensations of sex.

A chime made both their ears turn to Nesh's phone. The serval looked at it and grinned. "Of course, man. I was hoping you would ask."

The serval reached out and squeezed the wolf's achingly hard shaft through his jeans. "Just leave it all to me, and don't mind Cyr."

Percy glanced to the short ram and was about to protest when he felt Nesh's hand grind along his length. It had to be the U-sleeve enhancing it, because no simple grope should have felt that amazingly good. The pleasure was so intense it made his eyes roll in his head. He couldn't process anything but the feeling of those nimble fingers unzipping his jeans, pulling out his shaft and starting to stroke along the length of the U-sleeve.

When Percy could focus again, his whole attention was drawn to the serval's naked body climbing up into his lap. Unlike the wolf, the feline shaft was still completely limp, tucked into his sheath. But the look on Nesh's face was still one of giddy eagerness. He had gotten a bottle of lube from somewhere and was busy caressing the now slick wolfcock in front of him. Then he wrapped his arms around the back of Percy's neck and scooted himself forward, positioning the thick shaft under his tail.

The wolf groaned and buried his muzzle into the fluff around Nesh's neck. "You're so warm," he said.

"Just follow my lead, big guy." The serval began to lower himself down, taking the wolf's cock into himself gently. Once he bottomed out and was confident he could handle his friend's girth, he started to bounce.

Percy was practically limp in his seat. If it weren't for the serval's shoulder, his muzzle would be hitting his own chest. His arms hung at his side and the only part of him that showed any energy was his shaft, basking in the warmth and tightness of the serval's entrance. If he thought the simulated anal was good, this was head and shoulders above that. His entire shaft tingled as the U-sleeve sent constant messages of pleasure straight into his brain. As Nesh rode him faster, the pleasure built and built, searing deep into him and making him wish this single moment would never end.

He was slowly brought back to himself by the serval's moans. They were right into his ears, mixed with plaintive whimpers of need, urging the wolf to take him harder.

Lethargically, head still lost in a morass of pleasure, the wolf brought his hands down to the serval's hips. He gripped the smaller male tight and shoved him down hard on his length. The serval chirped at the sudden inability to move on his own. Percy's muscles flexed and he lifted his friend in his lap and brought him down again, harder this time. Over and over again, grunting and huffing with exertion, he fucked the feline with a mix of his own grinding hips and forcing the serval down. He could feel the orgasm building, nearing completion, but there was something in the way, something preventing him.

"Tie me," came a whisper from his friend.

With a grunt and a nod, the wolf shoved the feline down, unrelentingly adding pressure until with a pop, his knot slipped inside. They both moaned out, and the wolf's orgasm crashed into him. The sensation of filling the serval's ass with his seed was so delightful that he just relished in it.

After what felt like several minutes, the wolf had recuperated and looked down. A strange question immediately filled his mind. "You didn't get off?"

The serval shrugged. "I don't very often," he said with a sigh of delight. "Apparently I have an unusual biorhythm so I have few optimal cycles, or something like that. But that felt wonderful." The serval leaned in and met Percy's lips with a kiss that surprised the wolf, but he soon found himself reciprocating.

"We should... we should do that again, sometime," the wolf suggested.

"Absolutely." The serval turned his head around. "Sorry about the mess, Cyr."

The ram, whom Percy had completely forgotten about, smiled. "I'm a U-sleeve tech. Comes with the territory. Although Percy..."

The wolf felt his ears pin back as the ram addressed him.

"I'm sending some recommended training regimens to your app. If you and Nesh want to pursue this, you should try them out."

Percy only nodded with relief.

* * *

Percy needed an evening to recover, but the next day he pulled up the regimen Cyr had sent him. It was unlabeled and there was a warning on it that said, "Not an official program. Use at your own risk." Percy trusted the ram though, so he happily clicked play.

The app instructed him to go about his day, but to put his earbuds in, synced up to his phone. That was unexpected. He had homework to get done though, so wasn't too put off. He cracked open his laptop and started working, while part of his mind wondered what exactly the program would do.

After about half an hour of work, he felt a tingle over his groin. Although his shaft remained soft, there was a sensation of a tongue lovingly running over his length. It went on for several minutes and just as it began to fade out, a soft voice came over the earbuds. "Good puppy." The phantom tongue gave one more lick over his length before the wolf could react.

Then it was gone, and although Percy's free hand drifted down to rub against his once more chaste shaft, he couldn't get any stimulation. He had to wait for the program.

The same tongue-based stimulation came every now and then, with the voice growing more and more insistent that he was a good puppy. As much as the big strong wolf did not want to be called that, it was impossible to do anything but enjoy the sensations as they were being poured into him, and by the end of the day, he was looking forward to being called a good puppy even if it didn't come with any caresses along his shaft, although it often did.

As bedtime approached, the app told him to strip naked and crawl under the sheets that way instead of putting on his favorite pajamas. There, his shaft, controlled by the U-sleeve, stiffened to hardness and began to leak pre against his belly. Although he yearned to stroke himself, and he could feel that the chastity mode had been deactivate, the voice in his ear told him that "Good puppies don't stroke without permission." Whining in need, the wolf drifted off into an uncertain sleep, with the voice reminding him in constant whispers that he was a good puppy.

As the week went on, Percy enjoyed more and more being called a good puppy. He kept his earbuds in almost all the time, except when they were charging, and sometimes, even in the middle of class, the app would whisper to him that he was a good puppy, and he would start to wag in the middle of class, imagining the wonderful feeling of that tongue over his length.

The program also kept reminding him of all the things that good puppies did or did not do. The first and most important was that good puppies don't stroke without permission. That it emphasized every day, denying him any release so that he was more and more pent up and taunting him by releasing his shaft from chastity mode. Each time he refused to stroke himself, he was rewarded by a small burst of pleasure from the U-sleeve. It wasn't an orgasm, but it was still damn nice.

"Good puppies are comfortable being naked." Percy started to undress whenever he was at home alone, enjoying the feeling of the cool air over himself.

"Good puppies love to show off." Percy stood in front of the bathroom mirror, flexing his muscles and enjoying the way they looked. And with each flex, his naked, hard shaft flexed with him.

"Good puppies assume the position they are told." The app ran the wolf through a variety of poses and postures. Kneeling, standing to attention, bending over and showing his ass, and more.

"Good puppies thrust on command." Percy was on all fours, several pillows underneath him wedging his cock against his belly. The metronome clicked in his ear and on every click he thrust forward. The speed was fast and intense, and Percy was beginning to pant, but he had to keep going. Good puppies thrust on command, after all.

"Good puppies don't cum without permission." Percy's mouth was open, tongue lolling. He had been thrusting for fifteen minutes. He had been edging for ten. The U-sleeve was assisting him in holding back his orgasm, but part of it was also sheer concentration and determination not to slip. He was a good puppy.

* * *

The knock came on his door bright and early on Saturday. Percy threw on some pants real quick and answered the door to let Nesh in. He and the serval had been texting all week, but their schedules only aligned now.

"Do you mind if I undress?" Percy asked.

The serval grinned and lifted an eyebrow at him. "Go right ahead," he said with a leer.

The wolf grinned and slipped out of his pants, standing naked and proud in the kitchen of his apartment. He flexed a bit and admired the way Nesh oohed and aahed over his muscles.

The serval slipped in and gave a quick kiss to the wolf's cheek. "So, I heard from Cyr what your training was all about. Would you like to be a good puppy for me?"

The wolf couldn't stop his tail from wagging as the serval teased him. "I'd love that."

"Good puppy."

Percy shivered from head to still wagging tail.

"I have something for you." Nesh held up a shopping bag and from it withdrew a bright orange collar and then a chest harness with the words "Service Top" emblazoned cross it. He happily dressed the unresisting wolf. When he was done he fondled the wolf's shaft, teasing it up to full hardness, still with its U-sleeve in place. "Have you been stroking yourself at all, puppy?"

"No, sir," Percy said, adding the honorific as his training had told him to do. He was a good puppy after all. "Except when I'm told to."

"So that means no orgasms either?"

"No, sir. I was saving one up for you."

The serval grinned and bit his lip, looking like he could not believe his luck. "I have a request for my big strong puppy."

Wolf ears perked and turned attentively to the feline draping himself across the wolf's body. "Of course. Anything, sir."

"I want to suck you off..."

"Of course, sir, you can do with your puppy whatever you want."

"But I don't just want to suck you off. Oh, it's embarrassing."

The wolf wrapped his arms around the small feline, who was suddenly shaking slightly. "It's okay, Nesh. You can tell me. I've been your friend for years. I'll still be your friend." He grinned. "And your obedient puppy."

The serval leaned his head back against the wolf's shoulder. He didn't say anything for a moment. "It's just that you've always been such a confident stud, and it's been hard for me to admit that I'm just a silly little slut. I don't feel like I really deserve your friendship sometimes, and sometimes I feel like I don't want to be deserving of your friendship. No, wait, let me finish." He held up his hands to ward off the wolf's embrace. "Right now, I'd like to not be your friend. I want to be your slut, your cocksleeve with no purpose but to choke on your length and swallow your load." The serval swallowed. "Is that okay?"

The wolf nodded and held his friend close. After a moment, he asked, "Do I have permission to stroke and climax, sir?"

"You do, if you need to," the serval said with a shiver.

Percy continued to hug his friend tightly. He caressed over the feline's back and slowly reached up until he could grip a tight fist of the serval's scruff. The feline's chirp of surprise was silenced by a sharp growl from the wolf. "What are you doing standing up, slut, when you belong on your knees?"

Before Nesh could answer, powerful muscles jerked the serval down and pushed a cock directly in his face.

"Now start sucking, fucktoy," commanded the wolf.

* * *

A month later, Cyr was whistling to himself as he arrived at work on the weekend. Along with him were a few other guys, friends of his, for a certain definition of friend, friends who paid and paid well. "Wait til you see the new stock we just got in."

The ram led the small group of guys down the stairs, but did not turn left to his usual office space. Instead he turned right, unlocked a different heavy steel door, and beckoned for them to follow him in.

The room was already quite full with other men. A dozen male students of various species were in the room, all of them naked or nearly so, and each of them sporting a black U-sleeve around their lengths. They all looked up attentively when Cyr walked in and, with the exception of those who were gagged or muzzled, all greeted their technician. Above them all was a sign, in a sign that read in silver embossed letters, "U-slave."

Cyr turned smartly on the spot right in front of the line of naked men. "Now, let's go over the rules again, as we have a few newcomers this time." He tipped his head to a gemsbok who smiled nervously. "You pay a flat fee and you get your choice of U-slave for the day. Each U-slave has been meticulously trained to satisfy a particular fantasy, but will also be generally obedient to their renter. You are free to use your chosen U-slave as you will, with a few exceptions. No injuries. No revealing their status as a U-slave to anyone else. And nothing else that would interfere with their normal life. Remember, people, U-slaves may be toys, but they are also people."

The ram gestured to the two U-slaves closest to his audience. "Also, for your perusal, we have our newest U-slaves. This, here, is puppy." He gestured to a bulky wolf who was kneeling on the floor, wearing nothing but a collar, a heavy wire muzzle, and mitts over his hands. "And over here, this is kittyslut." He waved his hand to a serval, who was leaning away from the crowd, wiggling his naked ass at them and giving sultry glances over his shoulder.

"Oh, that reminds me." The ram walked up to the serval and ran a hand over the presented rear. "This kittyslut as such a good boi, helping to convince his best friend to become a U-slave along with him. And for that he gets a..." The ram leaned in close to the serval's head and whispered into his ears. "Recruitment bonus."

The kittyslut gasped and squirmed, and the crowd watched in slack-jawed silence as the simple two-word phrase caused the serval to climax quite hard, seed dripping down his sheath.

Cyr laughed and pet down the serval's quivering spine. "How long was it since your last orgasm before that, kittyslut?"

"Almost a hundred days, Technician," the serval said in a mewling whine of lust.

"If you want another one, you'll have to convince another friend to join us."

"Yes, Technician."

The demonstration over, the crowd of interested renters began to wander through the room. Several of the men in there were old favorites, and they considered getting their preferred U-slave or trying a new one.

Cyr wandered over to the gemsbok, who was standing just to the side of the wolf named puppy. "Any questions I can help with?" the ram asked.

The gemsbok jumped a little and coughed. "No, I just... I like the idea and all, but I don't think it's fully real to me unless I know what he likes."

"I see. Well, puppy really likes to be scratched behind the left ear. Go on. Try it."

The gemsbok reached out a tentative hand, while the wolf kept an intent gaze on the approach. When the gemsbok touched the wolf and began to rub intently behind the ear, the wolf's eyes slipped shut and his tail began to wag.

"See?" Cyr said. "But there's something puppy loves even more." The ram slipped a finger under the wolf's collar and pulled him forward, until his nose was pressed against the gemsbok's crotch.

The wolf, sharp and alert again, gave several quick, sharp sniffs, dragging in the masculine sexual scent right before him. Then, he took a deeper, longer breath as he began to rub his nose against the gemsbok's groin, pressing along the other male's hardening length and making it grow stiffer and its scent sharper. His tongue pressed against the wires of his muzzle and left a damp spot on the gemsbok's trousers.

Cyr snapped his fingers and the wolf's ears immediately turned to the sound. "Puppy, sit up."

The wolf immediately knelt upright.

Another snap. "Puppy, sit pretty."

The wolf spread his knees wide to display his naked sheath and lifted his hands in a classic begging posture.

Another snap. "Puppy, get hard."

There was no active stimulation, but nevertheless, the wolf's shaft, with its black U-sleeve, pushed out from his sheath and hardened in the air.

Another snap. "Puppy, speak."

The wolf barked sharply.

Cyr grinned and snapped one last time. "Puppy, show my friend how happy you'd be if he took you home for the day."

The wolf gazed longingly up at the gemsbok with his tail wagging behind him. He moved in closer, looking as if he were about to start nuzzling the hidden shaft, but instead, pressed his thighs in close and humped fervently against the gemsbok's leg, while the male laughed and pet over his head.

Cyr knew he had made a sale. "That's U-slave for you. They're the latest and greatest thing."