Friends With the Monster | [BKDK]

[cynnabnnuy]

Izuku, you fool. You sweet little fool. He'd feel an ache of punishment for that adoration tomorrow morning. But, Katsuki remained still as the other hugged him, faltering at the feeling before he sighed softly and placed a hand on the other's back. He couldn't hurt him again. The assurance made his chest tighten, only for it to slam into his throat at the confession. He gave a sharp sound, eyes wide as his face reddened in seconds. His tail flicked at the ground at the kiss, but he was left stunned as the other moved away.

What the fuck? How was he supposed to respond to that? How was he supposed to process it?

To put it simply, he wouldn't. Not yet, anyway. Instead, he nodded at the other's words, barely able to parse the words as he stared at the floor. His head was spinning, and he felt like he could barely breathe through the fifteen minutes he was left alone again. However, when the lights dimmed, he looked up, head turning to the other when spoken to before standing carefully. With the door closed, the nomu walked over to the other, hesitating in front of Izuku before he moved to push him against it, a low, almost-purr pulling from his throat as he leaned closer.

It took him a moment, tense, as he thought it over before grabbing the other's chin as carefully as possible while pressing further into his space. Lips parted, he paused before his free hand moved to push against the other's chest, keeping him in place as he spoke slowly. "If I... Hurt you- can you stop me?" He wouldn't proceed if the other wasn't strong enough to restrain him if needed, even if he wouldn't intentionally harm him. But, assuming he got an affirmative response, he leaned his head to the side and pressed in. "Then make sure you do." Voice rough as he spoke, Katsuki pressed scarred lips to the other's, stealing a kiss he'd wanted for far too long as he moved his hand from Izuku's chin to his hair. He'd taste slightly sweet, lips moving over the other's before he licked at them for entry.

The blonde's other hand moved down, trailing the boy's torso before grabbing one of Izuku's hands to pull it toward his crotch. He was stiffening against his pants, the inhuman organ filled with blood, as he ground against the other's palm with a whine of need. It felt pathetic, but there wasn't much he could do about it now.

[honeybee]

Izuku watched Katsuki stand, staying where he was by the door as the Nomu drew closer. His heart began to speed up, and he felt his breath hitch when his back made contact with the solid door after being pushed against it. Heat quickly rose up his neck and settled on his face, and the adrenaline was already flowing through him as he Katsuki leaned closer.

His chin is grabbed with such gentleness, that, when he hears the question, he exhales a shaky breath.

"You won't... but I can." He knew he could put up one hell of a fight, at the very least. But, right now, he felt no danger. Didn't feel scared. Instead, he was looking at Katsuki with a sense of determination in his eye. Katsuki speaks again, but this time, Izuku doesn't need to respond. Instead, lips press to his own and it feels like a weight had been lifted off of him. His eyes fall shut as he presses back into it, one hand reaching up to rest gently on Katsuki's bicep.

But, he hadn't reazlied just how needy Katsuki truly was, because as soon as his lips parted, he felt his other hand be guided toward Katsuki's groin. The whine he lets out-- it makes Izuku want to do everything he can to help him.

Lightly, the male's hand squeezes, before both hands are moving down to pull down the fabric of Katsuki's pants, exposing him and--

"Oh--" He makes the sound involuntarily as his fingers come in contact with more texture than he expected, and he has to look down with wide eyes as his fingers rub over the soft spikes along the Nomu's length. He's big, and Izuku wasn't sure if he'd be able to fit without... proper preparation. He's already panting a little, and his own 'issue' was rising in the sweats he'd changed into for bed. Of course, not *nearly* as big as the blond. He swallows thickly.

"Hey.." He lifts his gaze and leans in to press gentle little kisses against Katsuki's jawline. "Let's go to the futon, okay?" Izuku offers softly, the pad of his thumb pressing against the head of Katsuki's dick and rubbing lightly. "It'll be easier."

[cynnabnnuy]

Shuddering at the feeling, Katsuki pushed into the kiss more. His tongue trailed over Izuku's. It was far too long as he tilted his head to slot their mouths together. He felt like his skin was on fire, pushing closer and leaning into the hand on his arm as he groaned slightly at the squeeze. It was so good for such a small motion.

When Izuku looked down as the nomu's pants fell past clawed feet and mangled skin, he jolted at the sight of himself. That was not his. The majority of the length was an angry red, with dark spikes lining both the pointed head and part of the shaft, and it was bigger overall. The base was different as well, the sides protruding slightly. That was concerning, but he needed more than a kiss and a squeeze.

He growled at the little kisses, hips pushing into the way Izuku rubbed the head of his cock as the boy suggested they moved. Glaring down at him, Katsuki huffed and rolled his eyes before moving to pick the smaller male up. It was a slight hassle, but he walked to the futon and dropped Izuku carefully before moving down to his knees over the other. His face was red, his breath heavy as he moved to tug the other's pants down, not concerned with the way he ripped them off to do the same with his underwear. He wasn't going to be the only one without clothing, but... he didn't want the other to take off his shirt.

However, undressing the other as he pleased, Katsuki shifted between his legs, dropping down on his elbows above his friend's face as he stared. His breath was hot against Izuku's skin, heavy as he gave a low, clicking, and animalistic sound while his hips pressed against the other. He wasn't stupid, he didn't push against his entrance, but the nomu was more than happy to grind against the smaller cock as he gave more desperate sounds. "Deku..."

[honeybee]

Izuku wanted nothing more than to help out his Kacchan, to satiate the obvious ache he felt within him, but he knew that they couldn't do too much without the proper preparations. He knew it wouldn't be easy, taking Katsuki's size, but he figured that, with enough toy use (god, he was going to have to buy sex toys...) and enough lubrication, he'd be able to give the other what he needed. But... something told him he wouldn't be able to get ready soon enough.

"Ah--!" Izuku can't help the small noise that leaves him as he feels himself get lifted up, his hands immediately moving to brace against Katsuki's shoulders. Being carried like this does things to him, and Katsuki's eagerness to undress him does even more. By the time he's got those intense red eyes on him, he's fully hard and leaking against his own stomach. It seems that the pressure of the other's dick against his own is enough to snap him out of his daze, eyes fluttering a little as he lets out a breathy little moan, only for his hand to come up to his mouth. He's embarrassed, embarrassed by how easy it was for the man above him to pull a sound out of him. Part it was from the low voice, though, too, which sent chills down his spine in the best way.

"W-Wait.." Izuku's already panting, flushed down to his shoulders as he gently pushes Katsuki back. "I m-might not be able to, um, take you yet but we can... simulate it..." Without further explaining, Izuku turns onto his side, pressing his thighs together and reaching to carefully tuck Katsuki's dick between his thighs. It felt so warm and firm, but the spikes were surprisingly soft. He can't look at him as he adjusts a pillow so he's a little more comfortable.

He glances to Katsuki.

"F-... Fuck my thighs, Kacchan." He's so timid, and he's so hard, but he was more focused on getting the other off, first.

[cynnabnnuy]

The blonde growled at the noise, his insides going for a spin as he dropped Izuku onto the mattress. He couldn't contain himself, at least not entirely, but seeing the other all messy for *him?* Fuck, it had his dick aching as he ground it against the other's. His lips pulled back from his teeth as the other hid from him, snarling as Izuki pushed him back and denied him.

Katsuki waited quietly, though, his eyes narrowed at the other's movements, watching Izuku pull his dick between his thighs before the nomu jerked back. He'd never liked being told what to do, and he sure as hell didn't like it now. So, clawed hands moved to shove Izuku back down where he'd dropped him, a low and chittering growl leaving his throat as he pulled down. Making his way between milky thighs, he spread them effortlessly before lifting one as his mouth leaned towards it. "Don't... tell me... what... to do!" The words were punctuated with slightly gentle bites, nips placed over the scarred flesh easily as he avoided breaking it for the moment. Then, when his eyes met the green ones above, he bit harder, allowing his sharpened teeth to break the flesh before pulling out to lick over the incisions. The taste of copper on his tongue made the boy groan, his length twitching beneath him before he leaned closer.

"Got it?" Snarling again, he shifted, attention turning to the other leg as he lifted it to repeat the bite before lapping at the blood bubbling up. He'd do so a few more times, marking the other's thighs before he drifted lower between them. Hot breath fell over the other's shaft, and the monster's lips parted before he leaned closer to lick over the other's shaft as he watched him. He had his own plans, and Izuku wasn't about to change them without begging.

So, after the initial lick, he bent down more, nose pressed under the other's balls before he ran his tongue flat over his entrance. His eyes lidded as he moved, hips lifted and tail swaying behind him as he slowly lapped at the other's entrance with a hum.

[honeybee]

"Eh?" Izuku was confused as he's pushed back, his heart pounding hard in his chest. He's not terrified for his life or anything, but he was terrified for what the Nomu might have in mind for him. As he watched him go lower, his heart is pounding. His cock is twitching with each little nip, and he has his hands gripping the pillow beneath his head, fingers gripping tight as he holds his breath.

Their eyes meet, and Izuku can't hold back the cry of pleasure as he feels the bite. His head tilts back, eyes shutting as he feels tears. Both from the sting of pain, but from the amount of pleasure he felt rocking through his body. When the other leans back over him, he looks up at him, nodding with a small little whimper.

"Y-Yes, Kacchan." He knew not to tell him what to do... at least. Not in bed. Or ever, but he would hope Kacchan would listen to reason should he provide it in the right context.

He watched with eager anticipation as Katsuki moved back down, and he gasps out at the second bite. By the time his thighs are covered in marks, there's pre dripping pathetically down his stomach, collecting at his naval and dripping down the side of his body. He's going to cum really fucking fast with the way things were going. The tongue against his shaft makes his thighs tremble the tongue making him moan and turn his head partly into the pillow. "Kacchaaaan..." He whines softly, toes curling. This was both incredible and so much-- He didn't know if he'd be the same after this.

The tongue against his hole makes him jolt, eyes shooting open as his back arches some. He looks down with widened eyes.

"W-Wait-- I m-might cum if you do that--!" He squeaked out, squirming just a little.

[cynnabnnuy]

Huffing at the other's reactions, he raised a brow at the other's cry. He liked that, and a bit too much, actually. His dick pulsed at the sound, throbbing against his stomach while left painfully ignored. He wasn't entirely unreasonable. He knew he couldn't fuck the other without excessively thorough prep, but he was selfish. That was a constant throughout his life. Katsuki did things for himself or because they would benefit him, and that was it.

This was one of the things that would benefit him.

So, when the other protested despite the positive reaction, Katsuki moved again. Sitting up on his knees to yank Izuku's legs over his shoulders, he bent him over slightly while dragging his tongue over the other's hole again. He was absolutely making sure the other could see what he was doing before his tongue thinned, slowly pushing into the boy. His stare was firm, watching Izuku as his tongue... kept going. That wasn't right, and his brows twitched together in confusion.

Nope. Katsuki is not dealing with that right now. Instead, he pushed deeper, pressing his tongue toward the other's dick from the inside as much as he could while giving a low growl. He'd get what he wanted, and that was an overwhelmed, fucked out, and spent Izuku.

[honeybee]

"O-Oh-- N-No pl---nnnhh--!"

Izuku can't keep his eyes from rolling back as he felt the tongue press in, the new angle making it nearly impossible to get a solid chance to move away. But-- he finds himself struggling to keep his thoughts in order as he moans on the tongue, soft little babbles of "Please" and "Oh god--" falling from his lips.

It doesn't last long as the pressure builds up too much, and he can't help the pathetic, gasping breaths as he tenses hard, his own hot cum spilling over his face, dribbling down his chest. His hands had moved to brace against the wall, his gaze dizzy. Even despite this, he's whining soft and rocking himself against the tongue.

"K-Kacchan.." Izuku's panting, feeling sweaty and sensitive. "'m all messy." He complains lightly, and he feels dirty. One hand moves to lightly push against the Nomu's forehead, but he's shaky. "I n-need to clean up if you want to keep going." Even if he already feels spent, he knows that this wasn't the end. Not until Kacchan was satisfied.

[cynnabnnuy]

Katsuki refused to stop, grinding his tongue into the other's prostate once he found it. He wanted to see the other unable to speak because of him. He needed it. The pit in his stomach was finally responding to something, and Izuku tensing and fucking himself on his tongue was that thing. So, while the nomu did give the other a moment of stillness, he didn't pull out. Instead, his tail moved a little to test his control of the appendage before draping over the other's chest and pushing against his lips.

There was no way he'd stop now, especially not to clean up when he'd just make the other a mess again.

The tail pressed past Izuku's lips when able, sliding in over his tongue and rubbing against it as he groaned softly and buried his mouth fully against Izuku. His nose pressed up against the other as well, clawed hands grabbing the other by his hips as he ground his face against him. He shifted slightly as well, knees spreading slightly to get the other closer. It was just enough to rest his length on the other's back, grinding against his skin with low sounds as he only continued to move forward.

[honeybee]

Katsuki truly wasn't going to give him much a break, it seems. Not that Izuku really had any leg to stand on, not when he's thought about being with Kacchan for longer than he liked to admit. And puberty was not kind on him, not when hormones started making him think more... sexual things. But, he never thought this sort of thing would happen.

He finds himself parting his lips obediently for the Nomu, taking the tip of the tail into his mouth as his thighs continue to twitch around Katsuki's head with each skilled stroke of his incredible tongue. He could feel it deeper than a normal one should be able to go, and it was pressing against all the best spots. It ground against his prostate, making his vision spotty and electricity jolt through him.

It almost distracts him from the hard cock pressing against him.

Almost.

He moans around the tail in his mouth, finally focusing his nearly cross-eyed gaze on the Nomu above him, drool dripping down from his mouth. He manages to drop his arm that had lightly curled into the blond bangs around Katsuki's face so he can slip his hand between him and Kacchan's dick. So big...

His fingers work against it, doing his best to stroke his hand along it with the little room he has to work with, squeezing firmly. He wants to convey that he wants him, stretch be damned at this point. He'll deal with the consequence come morning.