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“You’ve been bad.”
Of course, Kirishima hadn’t actually been bad. Kirishima was perfectly obedient; sweet and submissive. Usually. Of course, no one can be perfect all the time. Especially when it was so much fun to toe the line, test out just how far he can push Bakugou’s patience before it snapped. No one could possible blame him for teasing just a touch too much, or purposefully ignoring a few small commands here and there. Rebellion was a perfectly human trait and Kirishima was certainly no exception. Much to Bakugou’s chagrin.
The rest of the time, though, Kirishima wouldn’t hesitate to do as ordered. He stayed still when asked, let out all the breathless whiny noises he knew Bakugou loved, and generally did his best to please his boyfriend. They both got off on it. Kirishima on the bliss of letting go and giving the reins to someone else, being able to relax and show his love just how much he trusted him. Bakugou on that same trust that was given so willingly to him, on being handed power instead of having to take it, and of being able to do everything in his power to please the one he loved. Needless to say they had a good thing going.
“I’m sorry Sir,” Kirishima looked up through his eyelashes, trying his best to put on an innocently apologetic look. It was working pretty well, on his knees on their bedroom carpet, big red eyes shining and lip wobbling ever so slightly. It was all an act, though, and Kirishima pulling his arms closer so that his biceps pushed his tits together was solid proof of the fact.
“Are you going to punish me?” Ok, so maybe he was going a liiitle over the top, but hey, it was working. To anyone else Bakugou might have looked unaffected by the display, but Kirishima could see the way his fists clenched, the muscles in his jaw working, and, of course, the twitch his dick made in his boxers. Kirishima did his best not to look smug.
“Yes, I am, but I don’t think the punishments you’re used to have been working. Today we’re going to try something new.” Kirishima perked up. He was literally always on board with whatever Bakugou wanted to try, even if it was like pulling teeth to get him to admit anything. Surprisingly, behind his boyfriend’s confident exterior was a thick layer of insecurity, that Kirishima had been diligently working on getting past. So it was a surprise to the redhead that Bakugou wanted to try something new without having brought it up previously. Inwardly, Kirishima glowed with pride.
Bakugou used one hand under his chin to bring Kirishima’s face up gently, leaning down the rest of the way to press a soft kiss against his boyfriend’s lips. Kirishima let a tiny sigh, melting into the kiss. The blond’s other hand came up to run his fingers through Kirishima’s hair and tuck it behind his ears. By the time he pulled away Kirishima’s face was red from the uncharacteristic display of gentleness.
“Stay right here, baby. I’ll go get your surprise.” Bakugou’s voice was so soft it was almost a whisper, and he enjoyed the way the redhead’s eyelashes fluttered as he reopened his eyes. Swiftly, he backed away and turned his back on Kirishima to rummage through one of his drawers.
“I was thinking about what I should do about you, baby boy,” He continued, still turned around. “And I remembered how much you love having something in your mouth.”
It was true. Despite the row of knife-like teeth that lined his gums, Kirishima’s 1 hit K.O. kink was having anything in his mouth. Many times foreplay for them had just been Bakugou forcing his fingers in and getting comfortable, and 10 times out of 10 Kirishima would be raring to go. Which is why Kirishima could feel his body warming up at his boyfriend’s mere suggestion.
“Which is when I got an idea. You know what they say about having too much of a good thing?” The blond’s back was still turned, but he was done looking for his surprise, instead choosing to let the tension build a little, smiling when he could head the redhead start to squirm in place.
Kirishima was about to say fuck it and demand to see what his boyfriend was hiding when the blond turned around. Immediately all of Kirishima’s complaints dried up, along with all the saliva in his mouth. His hands twitched, holding back the sudden need to rub his cock, which was so hard Bakugou could see it peaking out, flushed red and shiny.
“You like?” The question was rhetorical, of course, and even if he was expecting Kirishima to answer, the response would have been obvious. Kirishima’s eyes were locked on to the object in his boyfriend’s hands and his chest was rising and falling much more rapidly than it had been before. Still, Kirishima managed a single, enthusiastic nod.
Bakugou’s smirk turned a little more affectionate. In his hands was a dildo gag, black with an orange X wrapping around the shaft.
“Found this baby limited edition, I knew you’d like it, Ei-baby.” Both Kirishima’s heart and cock swelled at the confession. He could feel his face heat up, and heard Bakugou chuckle at his reaction.
“You want it?” Every step closer Bakugou took felt like an eternity to Kirishima. He could think of nothing but what it would feel like to have the gag on him, in him, forcing him open without chance of reprieve. He might have been whining a little.
“Shh, baby boy. It’s ok. You’re punishment is just for a little bit.” Oh fuck, right, this was supposed to be a punishment. In that case Kirishima tried to go for a more casual look.
“But Sir…” The redhead whimpered, trying desperately to come up with a reason why his boyfriend shouldn’t hurry up and stuff the thing down his throat already. Bakugou just gently shushed him again and settled down to kneel in front of Kirishima, mirroring his position on the floor.
“I have to do this baby, how else are you going to learn your lesson?” Bakugou’s hand was back in Kirishima’s head, stroking soothingly. His other hand holding the gag put it down on the carpet between them, dildo facing upward.
“I’ll be good, Sir. I promise.” Kirishima was twitching, trying not to disobey orders and grind against one of his own forearms between his legs, which were now valiantly helping to hold up the redhead’s weight.
“I know you will Eiji. Always so good for me. Only me.” Bakugou keep his voice soft, laced with affection. The hand in Kirishima’s hair began to trail slowly downward to his chest, while the other soothed up and down his thigh. Kirishima couldn't help the squeak that escaped when he felt one of his nipples being lightly pinched. Bakugou laughed and switched sides, giving Kirishima’s other nipple the same treatment.
“K-katsu, please.” Kirishima gasped. His patience was nearing the breaking point, he could tell.
“It’s alright pretty boy, I’ll take care of you. Open up.” Obediently, Kirishima’s mouth dropped open, and he had to fight not to start drooling. Bakugou hummed and smoothed his hands down the redhead’s thighs in a soothing manor. Inwardly, Kirishima marveled at how gentle his boyfriend was being. While it was true that the blond had calmed down considerably since their graduation from UA, he had never stopped being a man of action, loud and brash and everything Kirishima loved. The redhead’s heart squeezed in his chest.
“I’ll go slow, so let me know if you need a break, ok?” The sentence was punctuated with a kiss pressed quickly to Kirishima’s temple. The redhead nodded eagerly. Bakugou’s hand was hot like a brand on Kirishima’s thigh as the gag was brought up to Kirishima’s mouth. He strained forward, trying to catch the head with his outstretched tongue, and almost going cross-eyed from his focused gaze on the dildo.
“Calm down sweetheart, just hold still.” Bakugou cooed, almost patronizingly, and slipped the head of the toy into his boyfriend’s mouth. Kirishima just whined as the shaft slowly began to sink in. The dick wasn’t that big, maybe a little shorter than Bakugou’s own, but the same width. Kirishima gave the blond his best sultry look, closing his mouth around the gag and hollowing out his cheeks.
“Fuck. You little slut.” Bakugou growled and pushed the gag further in. Kirishima just smiled cheekily, well, as much as he could with a dildo halfway past his lips.
“Keep that up and you’ll be wishing you could beg for me.” The blond’s voice was a rumble from his chest that pooled as liquid heat in Kirishima’s stomach. The redhead moaned and took more of the gag in, drawing another curse from his boyfriend. He was about to make another needy sound to spur Bakugou on when he felt the tip of the dildo bump into the back of his throat. The sudden change cause an involuntary sputter, and Kirishima’s concentration was stolen as he fought not to gag. For a few seconds, he was just swallowing hard around around the length of the toy while his boyfriend tried to make comforting noises and rubbed his thumb into the redhead’s thigh. Bakugou’s grip on Kirishima’s leg had become like iron, and the pain of his fingertips digging in helped Kirishima calm down.
“Are you ok? Do you want me to take it out?” Bakugou’s voice was unsure, concerned. Kirishima grunted a dissenting noise. His erection had flagged a little, but he wasn’t going to give up just as they got to the good part.
“Alright Ei-baby. Just remember to tell me if you need to stop.” Kirishima swallowed again and began to inch slowly forward on the gag. Bakugou held it still in front of his boyfriend’s face, letting the redhead take control of the pace. Slowly, Kirishima worked his way down the shaft, whining around it’s girth at the soft words of encouragement the blond offered.
“That’s it, that’s my good boy. You’re taking it so well.” Kirishima whimpered when the base of the gag finally pressed snug against his plush lips. He looked up at Bakugou, question in his teary eyes, shining wetly.
“You did so good, sunshine. You’re my perfect boy, I love you so much.” The blond soothed, pressing kisses around Kirishima’s face and smoothing down his hair.
“I’m gunna buckle it now Ei.” He warned before his hands moved the straps hanging from the gag. Kirishima sat still as Bakugou buckled it around his head, taking care to keep his long hair out of the way.
“There you go.” The blond moved back to admire his handiwork. Kirishima’s tan skin was flushed and sweating, face screwed up in pleasure and eyes watering. His legs trembled slightly and nipples and cock were all erect. Kirishima himself felt wrecked. Drool pooled in his mouth, but whenever he tried to swallow it down he was reminded of the presence that had lodged it’s way inside him, forcing his throat to flutter helplessly around it. His tongue twitched against the intruder and Kirishima remembered about the large orange X spanning the length of the toy. Bakugou’s symbol. A shiver went down his spine at the thought. It made him feel used, owned. He fucking loved it.
Bakugou watched for a minute while Kirishima got accustomed to the gag. A smile spread across his face, though it really looked more like a smirk. He knew as soon as he saw the item online that it would be perfect for his Kirishima. After that it had only been a matter of finding the right one, and coincidentally finding a line of hero inspired sex toys during his search. Thank god for super fans, but it did tick him off that Deku seemed to have more items based off of him. Guess that’s what happens when you’re number one.
Bakugou had been nervous to show his find to Kirishima, though he would rather die than admit to being nervous about anything . He knew about his boyfriend’s raging oral fixation, and knew he would love the toy, but there was still some traitorous part of Bakugou’s brain that had screamed at him to abort. Now, watching his boyfriend, Bakugou could have slapped himself for doubting. There was no mistaking how much just having the gag in was affecting the redhead. The longer he let Kirishima stew, the needier and more wrecked he looked. And the more it was effecting Bakugou himself. While Kirishima was distracted he pushed his boxers down, effectively ridding himself of all clothing, and moved to kneel behind him.
Kirishima jolted a little when he felt his boyfriend’s calloused hands rest on his waist from the back. The other boy began to touch everywhere, lightly at first, just brushes again his skin, teasing, but soon turning harder, into firm strokes down his trembling arms and plush thighs. All the while he kissed and licked at the redhead’s neck and shoulders, as far as he could reach from the back. Kirishima whimpered quietly every time a kiss pushed his throat into the toy inside. Bakugou had been slowly working his way toward Kirishima’s tits, knowing how sensitive they were, and wanting to save them for the right time.
“Hold still pretty boy.” Bakugou growled into his boy’s ear, a split second before closing in. Kirishima gasped and bucked when Bakugou’s hands found his chest. The calluses from years of hard hero work felt amazing on his sensitive skin, and he groaned unashamedly at the feeling of those thumbs swiping across his nipples. Kirishima squirmed in the man’s hold, every movement jostling the gag still spreading his throat open, which caused even more squirming.
Kirishima sobbed at the double stimulation as Bakugou refused to let up on his chest. He knew he was disobeying an order by moving, but couldn’t bring himself to stop. Kirishima’s dick was throbbing in time to his racing heartbeat and he couldn’t hold back anymore. If he was already being disobedient, what was one more broken rule? Quickly, Kirishima’s hand left the floor to rub at his cock, but what he meant to be a quick touch soon turned into more as he found himself unable to pull away. To the redhead’s surprise, his boyfriend made no move to stop him either. The unexpected development was solved, though, when Bakugou’s voice rasped in his ear.
“You can come baby boy. But I won’t be stopping if you do.” He shifted slightly closer, and Kirishima could feel the hard press of his erection against his lower back. It was an empty threat, Kirishima knew. They never did any sort of penetration unless Kirishima specifically asked for it, nevertheless, the suggestion did not fail to get his blood pumping. The redhead gasped and shuddered. He could feel wetness trickling down his legs and coating the hand he was using to jerk off. Reluctantly, his hand stilled, but didn’t move away.
“Good boy.” Bakugou cooed, moving hands from his boyfriend’s breast down to join his hand on his dick, the other going to his hip. The blond started rubbing circles around his boyfriend’s cock while rutting against his plush ass. Kirishima’s other hand shot up to help with his nipples, and they both groaned when he pushed back against the blond’s dick.
“Fuck, Eiji, you’re so good.” Kirishima whined at the positive affirmation, already overwhelmed with the feeling everywhere. He felt like his insides were on fire with the combination of the gag and the stimulus to all of his most sensitive spots. He knew he wouldn’t last long, but was determined to help his boyfriend get off as well. They rutted together for a few minutes before finding a good rhythm, Bakugou jerking his boyfriend off with hard, confident strokes, using the leverage to grind his ass against his own erection. It quickly became too much for the redhead.
There was an attempt at a warning in the form of a grunt, but it went ignored. If anything, Bakugou increased his speed, making the redhead’s warning noises melt into groans, and finally a stuttering gasp as orgasm overtook him. Kirishima felt the white-hot rush of pleasure as he twitched his way through, aided by the blond’s helping hands. When it finally subsided, the ringing in Kirishima’s ears fading away, he became acutely aware of just how much his goddamn jaw hurt. Behind him, he could hear his boyfriend finishing as well, and felt the splash on his lower back when he came.
“I’m gunna take this outta you, ok?” Bakugou huffed, bringing his focus on undoing the strap of the gag as gently as his slightly shaking hands would allow. Slowly, he worked the dildo out of Kirishima’s mouth, gently soothing his jaw and neck as he did. Once it was out, the redhead whined and finally closed his mouth, rubbing his cheeks where the position had strained them. There was a comfortable silence between the two as Bakugou went about cleaning the two of them up, leaving the gag on the floor to be dealt with later. Finally, they slid into bed together, wrapped up with Kirishima’s head on the blond’s chest.
“It was good, right?” Bakugou’s voice was uncharacteristically soft, hesitant. When Kirishima looked up, he could see the crease between his boyfriend's eyebrows. Not trusting his throat to work, Kirishima instead gave a soft, reassuring smile, tired and ridiculously happy. He leaned up to kiss him and Bakugou huffed a small laugh. Kirishima nuzzled back under his boyfriend’s chin and kissed his neck, warm and comfortable and utterly sated.