DXD Beast Chapter 6: Bedroom Breakdown

Story by AnotherBrokeWriter on SoFurry

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Rias and Issei safely make it home, their tracks seemed to be clear. In bed they end up talking about the Issei's Sacred Gear and how to learn more about it. The voices in his head chime in a bit, but it looks like they need to do some test of their own. Fortunately Rias is willing to help out and record everything. Now they just need to redo what they did to make the marks appear.


Rias sighed as she and Issei safely teleported into their bedroom. She wondered for a moment why she thought of it as their bedroom now, since they had only met each other for about a day. The thought was pushed aside as she felt Issei continue to move in her pussy, sending a shiver up her spine as she felt him move inside of her.

“Haaaa, Issei, can you please stop for a moment, haaa, I am so full already.” Her belly was still super full of doggy cum, and she was having trouble focusing. Due to recently cumming, Issei was able to hold himself back a bit, even though Ddraig grumbled in his mind. Still locked together, Rias tried to put down some ground rules.

“Ok, that was fun and all Issei,” he barked at that and tried to thrust, but the crimson haired princess was keeping her wits about her this time. “But I think that we need to lay down some ground rules.” She tried to back off of his shaft to focus better, but his huge knot wouldn’t let her get out. Honestly trying to shake it off only made it harder and the both of them more antsy. At least they were both on the bed now, so that helped with her knees and palms.

“From now on, we can only fuck when we are both ready for it. We could have been caught out there!” Rias’s voice was starting to grow louder, anger clear in her voice. Issei whimpered a bit as he came to the realization that he could have gotten the both of them really hurt.

“I’m sorry Rias, I, I couldn’t control myself.” He honestly felt bad about the things that he had done and realized that they could have been caught or worse in those moments.

“I get it Issei, you're a smart dog, and you just became part of my Peerage as well, but you still need to learn how to act around other people. You were a stray until two days ago.” She softened up on him and just laid down on the bed, tired. Issei did the same and soon his knot started to deflate, tickling Rias, and letting his cum start to pool onto the bed again. Rias giggled as she felt him exit her and his jizz soaking her sheets again.

“Well, I guess I still need to do laundry from this morning so no loss.” Rias stretched on the bed and flipped over to sit up. She patted Issei on his haunches to grab his attention, so he sat up too. So now the two of them were sitting across from each other, dripping with sweat and sex juices, about to have a more serious and productive conversation. It was past noon already, but the pair weren’t all that hungry yet.

“We can’t just fuck whenever we want. We both have our duties now and we also need to keep up appearances of Master and Peerage as well.” She raised up three fingers. “This means no fucking outside. Listening to my orders when I ask of you. And also taking care of each other as best as we can. Do you understand that Issei?”

“Yes of course I do. I’m sorry about putting us in danger cause I couldn’t control myself, I, I didn’t really know what was happening to be honest. I just remember being so horny one moment that I had to fuck you. The voice in my head agreed with me and pushed me to do so.”

Rias paused at this, knowing that Sacred Gear members sometimes communicated with their gifts. She decided to find out as much about it as possible.

“What has your Sacred Gear told you so far?”

“TELL HER THAT WE WOULD NEED TO FUCK MORE BITCHES TO GAIN POWER. ALSO INCREASING YOUR PACK SIZE WILL HELP.” Ddraig said in his head.

“They told me that I need to fuck more bitches and have a bigger pack.”

Rias’s face dropped at that. “What do you mean that you need to have sex with other bitches? And how do we even increase your pack? Do we need other dogs?”

“LET ME EXPLAIN DOG SO THAT YOU CAN EXPLAIN TO YOUR MASTER. LISTEN CLOSE CAUSE I AM ONLY GOING TO EXPLAIN ONCE.” Issei just panted in front of her, as if lost in thought. When Rias started to worry about him, he snapped out of it and answered her.

“Ok, for each girl that I have sex with, my powers will increase based on how much sex I have with them, how much I make them want me during that time period, and how strong that person is. For pack, it can be anyone including the girls that I fuck, but it can also extend to those that fuck those girls as well cause it forms a bond between them and me.” Rias just started there slightly slackjaw at her dog’s info dump, but then she composed herself.

“Ok, how do you know that?” She was trying to stay calm due to the fact that her Peerage member may need to have sex with other people and the fact that she may need to have sex with other people as well.

“The dragon lady in my head explained it to me.” Issei said matter of factly.

Sighing Rias decided to just roll with it. “Ok, I am assuming that they are also the one that helped place those marks on me, and gave you those little growth spurts.” She rubbed her shoulder and right above her pussy, almost feeling the marks there. “What do those things even do?”

Once more Issei closed his eyes and looked within for answers. “They help me grow stronger, and you too, share powers and boost each other.”

“How so?”

“They told me that that when the bond between us grows stronger, than we can start sharing abilities with each other, also, my BOOST,” Issei barked loudly, startling Rias, would be stronger too.

“Why did you have to shout out like that?” Rias said, slightly annoyed and surprised.

“Because Ddraig said that I needed to give some respect to the ability.” Issei bowed his head.

“Wait, Ddraig? Are they some type of large red dragon that calls themselves the Red Dragon Emperor?” Rias leaned into Issei, grabbing his snout to look into his eyes.

“FINALLY SOMEONE WHO RECOGNIZES ME AFTER ALL THEESE YEARS!!!” The cheer in his head was deafening, but extremely pleased. The presence in his mind started to fade as well, as if going into slumber once more, and a calming sensation came over his body. It was like they were entering a pleasant dream. His mistress still held him in her hands though, so the hound nodded and Rias backed up a bit.

“That, that changes so much and explains everything. No wonder my Evil Piece reacted to you. You have the power of a Longinus in you. But we still don’t know why you have one since only the descendants of God’s Chosen are supposed to have them. The one you have is also one of the ones considered lost to time as well. How it ended up in your soul makes it even craizier.” Rias started at her mutt again, and this time he didn’t have any answers. Issei just shrugged his shoulders since Ddraig had gone silent after her outburst.

“I don’t know, and Ddraig has stopped responding to me.” Issei shook his head to remove the sleepy feeling. “I think that they went back to sleep. They did say earlier that they were running out of power, so they are probably taking a nap. I don’t know when they will wake up though.”

“Ok, I think that I understand this power of yours a little better, and I also think that it is a powerful tool that we can use to our advantage, once we get you used to it.” Rias was still trying to figure out how she was going to get multiple girls to actually sleep with her dog. It was a crazy request, one that she figured only the more depraved girls would do. Not to mention they would all have to share Issei’s doggy cock and even be fucked by other pack mates, whomever they will be, in the future. Dirty thoughts of Aneko and Koneko, her two closest friends, both sucking on Issei’s cock while she makes out with him. The royal lady had never had thoughts of mating with animals before, until yesterday, but the idea of a pack of beast ravaging her and her friends began to play in her mind, even though she was hazy on the details. Be they dog, bicorn, elephant, griffon, a few ideas to take root in her head. She felt herself grow wetter with the thoughts, and her fingers began to move down to her cunt as more animals came to stretch out her holes.

“Uh Rias,” Issei put a paw on her smooth creamy leg. “I know we just talked about boundaries and not having sex when we’re both not ready, so I am going to ask. Can you please be ready now?” Issei squirmed on the bed, his cock growing harder again, having not gone into his sheath. Rias looked down and saw his doggy dick, licking her lips. She knew that she was getting hornier and more needy over time, and the marks that she saw earlier were soon going to show up. This gave her the idea of recording what happened and reviewing it later to see how the magic works since she probably won’t be able to concentrate during the experience. Grabbing her head and shaking it side to side, she got up off the bed, taking a lopsided step on the floor, stumbling a bit. Issei bowed his head, assuming that he had been rejected, but his worries became confused when she went into her closet. He rolled over on the bed and saw that it was a walk-in closet, large enough that he couldn’t see the end of it, and packed full of boxes and different clothes. Rias soon came back with a black box and opened it up with a flourish pulling out a camera.

“I never got the chance to use this before, and I am actually pretty excited to use this.” There was a twinkle in her eyes, as she took it out and started to set up the tripod, taking the camera out and aiming it towards the bed. Removing the camera lens and checking the battery, she frowned when it turned out that the thing was dead. Searching through the box again, she pulled out a cord, attached it to the camera, and tried to hook it to an outlet before she pulled the tripod with the camera down due to the cord not being long enough.

“Fuck, one moment,” Rias went back into the closet and pulled out an extension cord and finally got the camera online. She readjusted the camera, aiming it at the bed, turned it on to record, and sat down next to the needy dog.

“Ok, I’m ready now, and the camera is now recording so we can watch later.” Rias looked very pleased with herself and Issei was kind of curious watching as well. “So how do you want to start?”

Rolling over onto his stomach with a smug expression, Issei showed off his cock to the camera and Rias giggled. He cutely put his paws up and asked nicely, “Can we start with you sucking me off?”

“Only if you lick my pussy at the same time.” She stood up and showed off her wet snatch, glistening with juices. The marks hadn’t shown up yet, but Rias was keeping a close eye on them to see when they would appear.

“Hell yeah, get over here.” Issei wagged his tail excitedly, ready to get started.

“Actually can you scoot over here, I want to capture everything just right,” she said pointing at the camera. Iseei nodded and scooted over closer to his King who turned around and moved her ass right above his snout, her face over his cock, giving it a gentle kiss. Issei enjoyed the smooches given to the top of his dong until Rias spoke up.

“Come on Issei, you have to do your part too.” The crimson haired princess reminded her pet that he needed to do his duty as she rubbed his slit on his nose. Issei got to work, using his large tongue to run his tongue over her lower lips, spreading them out slowly. They had a salty taste, some of the cum still in there, her light belly bulge testament to that. That only made him lap at her harder, wanting to give her cunt a fresh load in a bit. With her Peerage member digging into her pussy, she started to go down on his succulent cock, sucking it down half way as he continued to eat her out. He only paused when she started to stroke his lower end and massage his knot. The two of them sixty-nined each other for a moment before Rias tried to push it, shoving herself deeper down on his doggy dick, getting another few inches down her throat before coming back up for air. Due to not having enough practice without some extra help from physics and her partner, she still wasn’t able to go down all the way on her own. Her determination and pride wouldn’t let this cock beat her though, so she worked through her gags and coughs to try to get all the way down to the knot. Her ass bounced on the mutt’s mouth, soon getting his entire tongue into her pussy once again, drinking it all in. Part of his colder snout got into her as well which helped to spread her pussy lips out so he could eat her out as deep as he could.

Rias’s moans echoed through the room and the slurping noise of her being pleasured below were the only things echoing in the room. Both of them felt like they were approaching the edge soon, their hips bucking against each other, trying to get the other one to get deeper and faster. The dam broke when Issei couldn’t take it anymore, his balls clenching as he was at the very edge. He grabbed Rias’s head with his hind legs and crossed the back of her head down as she was pushing more of him into her throat. This was the final push that she needed before finally kissing his throbbing knot at the end which set the dog off, squirting his first load of cum into her stomach. The mark on her shoulder and womb finally started glowing their crimson and green glow again, and Rias’s mind started to cloud over with naughty thoughts. She squirted and clenched on Isse’s face, almost drowning him in her cum, his fur completely soaked with her squirt. He had to blink hard to focus through the load he was pumping into his master while also getting rid of the cum covering his eyes. Taking his snout out of her snatch, Issei licked his chops before letting go of the princess between his paws. She backed all the way up off his shaft before opening her mouth, letting some of his viral seed drop onto her tits, bed, and his fur. She rubbed the white fluid all over her tits, lubing them up for what she had in mind next.

“Hey Issei, which part of my body do you prefer, tits or ass?” She already knew the answer based on past experiences, but it was nice being told.

“Tits please, are you doing what I think you're going to be doing?” He got his answer when Rias moved forward and started to wrap her breast around his massive cock, rubbing them gently between her hands, stroking them slowly up and down.

“How does it feel?”

“Ahhh, heavenly, so soft and so smooth.” The large pillowy breast surrounded the majority of his cock, only the tip poking out between her valleys which was soon given light kisses, right on the urethra. Issei squirmed as she tongued him a little, lapping up some of the leftover jizz on his cock while keeping her breast slick. As she bounced her tits up and down on his shaft, he thrusted his knot up from below, enjoying how she gently pressed back down on him, massaging his knot as he grew closer to cumming. Lifting up his upper half, Issei tried to lick at her snatch again, but she was just out of reach, teasing him by moving out of his way, just letting him get a whiff at how wet that she was getting. She topped off this short little experience by giving his cock a little nip, catching his attention and preventing him from actually cumming too soon. It didn’t hurt and it was actually lighter than the play bites he would give her. But it got his attention as she took her breast away from his cock.

“Ah, sorry boy, I think that I’m getting pretty worked up right now,” Rias said while rubbing her glowing shoulder and womb marks. “I really need to get you in me now, and I don’t know how many shots left that you have after what we have been doing all day.” Issei wanted to protest but stopped when she got up and turned to face him, her glistening pussy with a light bush over it. Her heavy tits swayed in the room light, glistening with their juices, and her crimson hair framed her entire body. The dog’s breath was taken away by her beauty and how lucky he was to be in his current position. He could only stare as she squatted down on top of his cock, rubbing her clit with his tip before slowly sinking down upon it, the mark on her womb glowing a little brighter as if in response to her starting to gently fuck him.

She whimpered and moaned, trying to keep a dignified posture as she bounced on top of his foot long bitch breaker, still taking only the majority of it in since it hadn’t penetrated her womb yet. The devil dog and devil girl enjoyed the moment as the two of them sank into depravity, their bodies making the bed squeak gently as they enjoyed their moment. Their lust for each other was growing though, and Issei was once again having trouble keeping his instincts in check to let his King do what she wanted. Rias on the other hand was having fantasies of having her insides being dug out again by the giant cock inside of her while having the knot completely seal her in with her Peerage member, preventing them from separating for a time as he filled her up with his good hot doggy cum. Her eyes started to roll to the back of her head as she picked up the pace, placing her hands forward, letting her tits swing above his chest. Taking his chance, Issei finally grabbed her tits with his front paws and pulled them towards him, making his crimson princess engulf his head with her boobs.

He liked her nipples all over, their salty taste being enjoyable, and reminding him how he had her covered all over. Her nips hardened at his touch even farther, becoming little nubs that he play bites as she continued to ride him, her hip thrust growing faster the more that he played with her. Grabbing both of them tightly, he started to suck on both breasts at the same time, pulling on them gently, grazing her perfect breast with his teeth gently, avoiding any cuts. Rias held herself above her pet, letting him play with her tits. She slowed down to let him play, but she was growing impatient in waiting for him to continue. Rocking her hips from side to side, she teased his dick some more to get him to continue to hump her. Issei soon got the hint and decided to get the best of both worlds. Wrapping his fore legs around him, he pushed himself off the bed a bit and he barked from between her tits.

“Can you help me sit up?” Rias understood what he was trying to do, holding his top half with her, and pulled him so that she was basically sitting on his lap. Fortunately, the dog was strong enough to have the lady on his lap, and he was more than happy to continue to suckle on her breast while she got to work riding him again. She could feel herself start loosening up inside, her inner walls starting to loosen up so that he could start pounding into her womb, enjoying the sensation as her cervix was teased with his tip. The crimson princess continued the assault on her own womb, growing wilder with each bounce and holding her dog to her tightly. When she felt herself coming close to cumming, the mark on her womb was glowing brightly, and Rias knew that she was going to cum soon on Issei. Wanting to give it her all, she raised herself off the dog, almost completely, only keeping the tip between her lips, having Issei staring up at her. The demon royal then dropped her entire weight down, shoving his cock straight up to the deepest parts of her pussy and deeper as she felt her inner hole give way, getting his doggy cock back into her baby room, his knot slipping right past her pussy lips to finally finish swelling up inside of her. Rias continued to work her body on the dog, shaking her ass in cicles and gyrating her hips to get him closer to cum. Riding his knot made Issei grow closer and closer to cumming himself, his instincts growing more wild. Taking the chance, he lunged forward, knocking his princess down, landing on top of her, biting at the paw shaped mark on her shoulder. A wave of pleasure went through both of them as Issei held onto her, both of them rocking into each other profusely.

“Ah, ah, I love the way that your knot digs inside of my boy. It feels so good.” Issei only growled into her shoulder at this, pulling on her pussy lips from inside even harder. Rias cradeled her dog as he continued to rock her world before she felt his knot start to expand inside of her again, letting her know that he was going to cum soon.

“Hmmmm, I can feel you growing bigger inside of Issei, how does it feel to fuck your King like this.” She scratched the back of his head, hoping that he would respond. Sensing what she wanted, the dog unlatched and spoke to her.

“It feels so good inside of you Rias, ha, ha, ha.” He was panting and drool was dripping from his maw, falling onto her body. “Let me try something.” Issei tried to look within himself and use the boosted gear on command to increase his dick size like before. Issei willed himself to use his Boosted Gear, to fill up his bitch even more. He felt nothing at first, but he wanted it terribly to fuck her even better. She deserved her best, and he was going to give it to her.

“I LIKE YOUR ENTHUSIUM DOG, I WILL GIVE YOU THIS BOOST, BUT DON’T DISTURB MY REST FOR A FEW DAYS.” With that, Issei felt his body grow stronger, the red and green light expand from his cock, and energy flowing into his veins as his shaft, knot, and balls grew. Rias felt her womb be plundered, the top growing and spreading out her hole as she could only whine and moan as he grew inside of her. Iseei felt a second win coming and he threw himself at her, thrusting even harder into her. His knot locked him into her again, stretching out her pussy lips as far as possible, and pulling on her pussy, preventing her from getting away. Why would she leave though, since she felt so good having her dog pound her into her bed. Her pussy felt even more stretched out than before, the over foot long mutt’s dick ravaging her body from within, each thrust warping her body bit by bit to only take huge dicks like this. She felt so full and filled that she could barely breathe. That didn’t stop her from holding onto him tight as he fucked her brains out.

The light on Rias’s womb was glowing brighter as she was being dug out, and her womb pounded into oblivion by her Peerage members uncontrolled thrusting. Issei put his hind legs on her tits, pinning her to the bed while staring directly into her eyes. He growled as he pulled back as possible, barely going anywhere, but his knot was pushing back on her insides, held tight by how much that she wanted to keep him in there. Her legs were still weekly wrapped around him as he pressed down on her breast, fondling them roughly with his paws, her nipples light scratched by his claws. He showed some level of control as he stopped right at the edge of cumming, as if waiting for something.

“Ha, come on Issei, keep fucking me please, I’m almost there.” Her arms were still holding onto his back, her body quaking to get some sensation from his cock and even his paws on her tits. She loved how filled and wild that they were and are. She was so close to cumming and desperate as she tried to rock her hips upwards to make him move, to tease him to move, but when she tried, he only laid down on top of her, stopping her motions. He kept looking at her as if waiting for anything.

“Hah, what do you want? Do you want me to do it myself?” He shook his head. Issei honestly didn’t know what he was doing, it just felt like he was being told to hold still till she asked for something. "Hah, hah, fuck me please, I need you to keep going. I can’t cum unless you move.” Issei felt like she was getting closer, but wasn’t quite there yet. Rias lifted her legs to get some leverage and rubbed her back against the bed, trying to get some feeling, but Issei kept still, but his growling increased, and his eyes were wavering to her tits and below. She could feel him almost break his trance when she started begging for him, so in her fuzzy and horny mind, the crimson princess decided to throw her reason and pride to the wind.

“I need you to fuck me now please. Please fill my womb with your doggy seed and give me your puppies.” Issei’s ears perked up at this, and she noticed. “I need to have you ravage my body and pour your cum into my body, saving it for you, stopping that bastard or anyone else from touching it without your permission. You’re going to fill up so many other girls, why not start here with me.” Her arms around his back held him even tighter, using her devilish strength to bring his face up to hers. With his snout right up by her face she whispered into his ears, “Breed me.” Thus the dam broke. All of Issei’s instincts barked at him to continue and the force holding him back cheered in lustful glee at her admission. The light on her stomach flashed and grew before Issei pulled back even more, his knot spreading her out lips even more as the base of his knot came out of her pussy a bit, making Rias squeal. Then he shoved his cock back into her, as deep as she could take it, thrusting all the way through her pussy, into her womb, and now shot load after load of fresh cum into her fertile body, blasting his seed everywhere inside.

The amount of jizz cumming out was greater than anything he had shot out before, enough to make her body swell, but it kept cumming. Both of them could feel her start to leak as Issei filled her up, his own body quaking at how good it felt. Rias on the other hand could only groan whorishly as she let her arms and legs fall off to the side, unable to comprehend how good it felt to be filled up with so much doggy spunk. It got so much that Issei could feel her body push back with his own loud, forcing his overgrown knot out with a hard pop. Rias’s womb wanted to keep sucking on the doggy shaft, but it was too weak from being stretched out and swirled by all the thrust earlier. It could only weakly grip at him as the tip left her womb, replaced with all the shots still coming out of his schlong. Issei stumbled back, flopping on his back as he came the largest load that he ever did, spreading more of his seed on the bed, but also covering Rias’s stomach and legs as he came out. Her ass was already drenched from the cum leaking out of her pussy and womb. Her pussy was unable to close quite yet, the muscles trying to squeeze a cock no longer there. The amount of sperm leaking out looked thick and sticky as it stuck to her insides and now formed a small pool between her legs. The King looked down at her body, trying to sit up, barely able to except by using her elbows to prop her up. She felt no pain with how much she was screwed, partially thanks to her devil biology, but she knew it was also likely in part due to the fading crimson and green mark on her womb and shoulder. Placing a hand by the slowly fading mark below, it was a heart shaped mark almost the size of her palm. Dripping her hand lower, she touched her inner walls and flinched.

“Ow,” she yelped since she was still so sensitive down there. The flesh was raw and spongy due to him being far tougher than any time that they had sex with each other. Feeling her strength continue to return to her, she took a deep breath and sat up completely, sighing as she remembered all the times that she just came during their session. She couldn’t count them, but she definitely orgasmed the hardest when he started cumming into her. They probably came multiple times in a row, with the only reason why she wasn’t a complete mess right now was because she didn’t want to become a sniveling cocksleeve yet and she wanted to check on something else. The magical mark on her womb was starting to fade back into her skin, but she could now sense its presence after knowing what to feel within her body. Looking up a bit, she saw that Issei’s cock was still semi-hard, his cum still leaking from his tip, the poor dog panting as he was forced a bit past his limits.

“Ah, let me take care of that for you boy.” Rias fell forward, her legs giving out when she tried to get closer to him and his cock. Her cheek ended up by his balls, and there the two laid for a moment, falling asleep as both took a moment to rest, their body exhausted from all the fuckery they had been doing all day.