Friends With the Monster | [BKDK]

[cynnabnnuy]

With his tail in the boy's mouth and the hand reaching to wrap around his length, the nomu was weak. Katsuki let out a hissing whine of need as his tongue switched from pushing against the other's prostate to folding over itself as he worked. His tail was collecting the drool it could, and Izuku was doing so well, but the stroking made him tremble slightly. He needed him.

His tongue pulled out, tail following suit as he moved to pull the other off his shoulders. Then, leaning up, he pressed to lick the cum from the other's face and his old shirt before swallowing. He pushed to kiss him after, stealing his lips and nipping at them carefully with a growl before he pulled back, looking over the room for a moment.

He wanted to flip the boy to make things easier, to use his tail to stretch him like that, but... he wanted to see his face too. Then he caught sight of the mirror, hesitating for a moment before huffing and returning his focus to the other as he shifted. His arms rested on either side of Izuku's head, his knees straddling him as his tail raised near his face. Drooling onto it himself to add more saliva, he lifted his hips to ensure he moved properly, eyes trained on the other's entrance. "Don't... move... yet..."

Voice low, the tapered tail tip pressing in carefully after using the saliva to ease the process. It wasn't the best lubricant. Even Katsuki knew that, but it was what they had, and he needed a way to be inside the other while also getting off. So, spit it was, helping the nomu's tail push inside the smaller body before he pressed down, cock laid over Izuku's as he ground his hips slightly. "Hands. Help." He'd be demanding a plethora of items to assist him when alone, but for now? He would need to rely on the other as his tail gently moved inside him, stretching a little before pulling out, scraping the organ he'd found all the while.

[honeybee]

It was getting harder and harder to focus, between the tail and the tongue. His dick is twitching back to life from the amount of sensitivity, and the mild blood loss from the bites on his thighs were making him dizzy. He finds his eyes struggling to focus as he sucks on the tail, soft little moans being muffled by the appendage. His thighs continue to twitch with each expert lick of the tongue, toes curled and his hands *desperately* doing its best to return the pleasure, but the angle is starting to make his arm hurt and his movements a little less... fluid.

When the tongue pulls out, he whines, almost attempting to chase the warmth as he feels cool air hit the now very wet area, only for the tail to pull out as well. He can't help the little suck he gives the tip as he looks to Kacchan with absolute adoration in his gaze, absolutely marveling in the attention Kacchan was giving him.

The licks to his face earn soft little giggles as his hands rest against Katsuki's chest, squirming just a little. "K-Kaha-cchan-- that tickles-!"

Then he's kissed and, even though he can taste the saltiness of his own cum on the other's tongue, he eagerly licks over them with a pleased little hum. But, before he can get into it, the Nomu is pulling away. He's panting, watching him with curious eyes. His brows furrow a small bit as Katsuki looks toward the mirror, following his gaze.

"Ka--"

He quiets the second the other starts moving, he watches. The Nomu gets closer, and he can't help but bring one hand up to caress over the man's jaw, though his hand pulls back as the tail draws near. He watches it curiously, amazed at how much control the other had over it. Though, as he watches the drool come down from Katsuki's mouth over the appendage, he realizes very quickly what's about to happen. His dick throbs, and he swallows thickly. Yeah, this might hurt in the morning.

But it was going to be worth it.

"Ah--" Izuku instinctively tenses around the tail at first but forces himself to relax by wrapping his arms around Katsuki's neck, clinging to him. The tail feels different from the tongue, bigger. More firm. Less... wet, even with the amount of spit coating it. Thankfully, Kacchan did quite a bit of work with his tongue, so the spit there helps a lot as well. Soon he's pressing against the tail with a shaky breath, brows knit. He hadn't realized his nails were digging into Katsuki's back just a little bit. But, his attention is brought back with the warm, heavy weight of the Nomu's neglected length, and his words are met with a little nod.

"'F course, Kacchan." Izuku murmurs softly, settling back a little more so he can bring both hands down. His eyes are trained on the large cock, heart hammering as both hands grasp and start to stroke, one hand along the length while the other squeezes and rubs at the head. "You're so amazing, Kacchan..." He breathes.

[cynnabnnuy]

Fuck, why was this damn nerd so cute? Everything from his stupid whines to that precious giggle makes Katsuki's skin crawl. He hates how much power this little shit has over him and is determined to take it back by force if he has to. No way in hell was Deku getting the better of him!

So, pushing into the kiss for a moment, he groaned softly, pulling back to debate before he noted the cut-off name and hissed quietly. Izuku was his, and he'd do as he pleased, within reason. Some reason. He knew this was pushing it, but there was no way in hell he was letting the other get out of this without something closer to what he needed. *Especially* not when he looked so fucking pitiful below him.

A low growl left Katsuki's chest when the other wrapped his arms over his shoulders, leaning closer to allow it. He shuddered slightly as the nails dug into him, but he had no qualms with a bit of pain as he rocked his hips against the other's length. The movements of his tail were slow and cautious as he prodded the other's insides, but his hips didn't quite match up. His movements stuttered as small hands wrapped around him, a slight growl leaving when he noticed the lack of the other's length pushed against him.

"Both... of... us... Damnit-" Muttering as his hips bucked into the stimulation, he groaned softly, thighs tense as he pushed down harder against Izuku's body. However, at the praise, he gave a slight trill before smirking down at the boy. "I know."

[honeybee]

Katsuki looked amazing, each little noise he let out from anything Izuku did to him was music, even if it sounded similar to an animal in a rut. He didn't mind, though, but he's surprised when Katsuki demands that he also use his hands for himself. He shudders at the way Kacchan ground against him so needy-like, and he lets out a breathless "Okay."

The smirk he gets makes his heart flutter in his chest, and he can't help but bring one hand up to gently grab the back of Katsuki's neck and pulls him down into a kiss while his other hand manages to bring their lengths together. The sensitivity of his own dick makes his thighs jolt a small bit, but the tail is wonderful at distracting him from it. He moans softly as he presses his tongue against Katsuki's lips, then over his teeth. So.. maybe he had a thing for sharp teeth. Was that so bad? He even thought Kirishima's teeth were cool, but nothing compared to Katsuki.

Unfortunately, he can't effortlessly use one hand, so the other returns from its spot on Katsuki's nape to between them, both hands squeezing their dicks together and stroking. It's quite the feeling, and by this point, he's completely hard once more. He feels so dizzy with pleasure, his hips are unable to keep still as he grinds and rocks against the tail.

"Kacchan.." He gasps out softly. "Please--- I need..." His brows furrow as his head falls back, eyes fluttering shut. "It feels so good... b-but I want you.." His eyes peek open, looking up at him through his lashes. Yeah, consequences be damned. His muscles squeeze around the tail. "Please..." He whimpers softly once again.

[cynnabnnuy]

Growling when pulled down, the nomu kissed back eagerly, lips parting to give Izuku a short taste of his mouth before his own tongue overtook him. He wouldn't let the other take control. Not in a million years. So, he kept it for himself, grinding down against the other's length as small hands stroked both of them after a moment. His dick was already aching, precum smeared over the tip by little fingers as he let his tail push harder into the other's sensitive spots.

His head was spinning, and it wasn't quite enough, but he'd get by. He had to.

With the other's voice pulling out and breaking their kiss, the monster hissed at him, pulling back enough to glare down at him before scoffing. There was no way he could handle that. Katsuki knew that much, at the very least. His head shook at the request, his hips rocking faster as he leaned down to press his lips against Izuku's neck. He carefully bit down after, lapping at the crimson pulled from the wound as he gave a low moan, only pulling away enough to swap sides. "Beg more... for me... beg for *me*..." Growling against his ear, he nipped at it gently before biting at the boy's neck once again. He was going to devour him, wasn't he? Probably.

"Need prep... toys... later..." It wasn't entirely coherent, but neither was he. The idea would get across though, hopefully.

[honeybee]

Seeing the Nomu shake his head, it might as well have Izuku crying. There's already wetness in his eyes from the sensitivity and how amazing everything feels. Gentle tears drip down from the corners of his eyes as he feels the tail press harder against his insides. His whole body felt weak and shaky from it all, never mind his first intense orgasm.

He sniffles a little, but tilts his head with a soft breath. Only to moan at the bite. His hands squeeze a little more firmly around their lengths, and it's insane, feeling both the texture and the size differences between them.

"Please--- Kacchan I need you--" He whines again, shivering at the bite to his ear. He's already close again... This was embarrassing, and Kacchan hasn't even came once. He felt almost pathetic, not yet being enough for the Nomu to have his way and get the satisfaction he so obviously and desperately craved.

"K-K-ah--" The second bite makes his cock twitch, and he suddenly realizes he'll need to try and hide the bites should anyone ask about them... But how he wished he could brag that it was Kacchan that did it. No one would believe him - they all thought he was dead. Or... worse. And, he was "or worse" but.. Izuku wanted to make him better. Wanted to help more than anything in the world. "Please... please please-- I-I'm so close, Kacchan.." Izuku whimpers out, his hand movements starting to falter as he finds himself rolling his hips against the tail and, simultaneously, against the man's dick.

"Wanna feel you cum inside.." He breathes, feeling himself burn at the admission.

[cynnabnnuy]

Izuku's crying may have made the bigger male laugh had he not been making the tears fall. He growled in approval at the begging, cock twitching at the sound before he bucked his hips harder against the hands. They knew the other would have to hide the bitemarks he was leaving, but Katsuki couldn't care less. His instincts were to make the other his however he could, and he wasn't keen on denying that urge.

He groaned at the grinding, though, his eyes lidding as he shuddered slightly. His dick was aching for release, the base getting more swollen while he bucked against the other's length. The warning made him huff while his eyes rolled before he leaned to lick the other's tears. The boy hadn't specified where, though, so... the nomu moved. His tail stayed pushed inside. The length was being used to his advantage as he crawled over the boy before pressing the pre-soaked tip against his lips. Barely giving Izuku time to think, however, he shoved his tail roughly into him, aiming to make him cry out so he could slam into his mouth in turn.

Then, he ground into him twice over, cock pushed as far as it could reach as the beast's sounds grew in volume and number. Katsuki was close as well, more precum spilling over Izuku's tongue before he drew closer.

The blonde had never really been one for getting off. He did it because it was healthy, but porn never interested him. And more often than not, the guy coerced the release from his prostate. That would've been his go-to now as well, but clawed hands and rough palms didn't really make that a feasible option. So, Katsuki settled for fucking the smaller boy's hands and mouth while his tail filled him below, dragging him closer to a climax too.

Within a few short thrusts, Katsuki spilled down his throat, the wet heat making him needier as he bucked into Izuku's mouth with higher whines. His heart was pounding in his ears, his cum hot and sticky as it poured from the spiked tip while he gave an amalgamation of noises in turn. He could feel his claws dig into the ground at all four points as well, hands and feet tensing against the floor as he ground out the remaining waves of climax.

[honeybee]

The other licking up his tears makes him squeak softly, eyes squeezing shut. It tickles still, but Kacchan was being sweet. In his own sort of way. He can't help the little smile, though, but as Katsuki starts to move, his hands move from between them and instead he finds himself staring at Kacchan's large length.

His breath ghosts against it, feeling it press against his lips makes him swipe his tongue over the head, green eyes peering up almost innocently, even though he's had half a mind of using his mouth since seeing it. But, before he could obediently part his lips for the Nomu, the tail hits hard against his prostate, making him cry out and arch his back, hands flying to grip onto the sheets as his toes curl once more. Soon he's being distracted by the stiff length shoving into his mouth, making him gag briefly around it.

Izuku's eyes roll back, eyelids fluttering as he sucks hard around the length. His tongue pushes against the soft spikes surrounding the length, and even though his jaw already hurts, he can't complain. His airway is getting cut off enough to make him feel wonderfully dizzy, and it's only making everything better. He could taste the saltiness of precum, and when he realizes Kacchan was closer than he thought, his hands move to what he couldn't yet fit into his mouth. Squeezing, stroking the inflated base in a desperate attempt for--

Katsuki cums, and Izuku is right behind the instant he feels his load shooting down his throat. His hands brace against Katsuki's thighs, body spasming as he tried, with slight difficulty, to swallow every little drop. Some seems to dribble from the corner of his mouth, but he can't care right now. Not when Kacchan sounded so amazing. And to think... he was the reason he felt so good..

Weakly, his hand pats a thigh, vision feeling fuzzy. He needs air.... and sleep.

[cynnabnnuy]

It took a few moments for the nomu to stop, his cum pooling in the other's mouth and throat before it stopped, and he ground into the hands around his base. It felt so good... he felt good... The pats bring him back to reality, though, and he pulls back carefully, his tail gently slipping from the boy's insides. He was panting, eyes blown out and wild as he moved to rest his dick on the other's lips.

Izuku was too pretty like that... He'd need to use his mouth more.

But, with his remaining cum wiped onto the other's mouth, he crawled back, lowering himself to clean up the human's spend before standing on shaking legs. He located his pants after a moment, stepping into them before grabbing the waistband between two knuckles on both sides. With those pulled back up, he grabbed his old blanket, dropping down beside Izuku before he laid against him and sucked at his neck again. The blanket pulled up to cover him before the nomu wrapped around his body to keep him trapped as he marked his neck further. "Mine... shitty Deku..." His voice left in a growl, his tongue dragging over the boy's neck before he nosed at the corner of his jaw. "Sleep..."

[honeybee]

Feeling lightheaded, it takes a moment for Izuku's focus to clear, realizing he felt the weight of Katsuki's length against his tongue and lips as the Nomu looked down at him. He exhales a shaky breath, tongue licking over the head, licking up the cum on his lips with a soft little smile. His lips were puffy from the abuse they'd endured from Kacchan mouth-fucking him, essentially, shiny with spit.

He felt so empty without the tail inside him, but, oh, he knew he would be sore come morning. He very much looked forward to feeling Kacchan for real. A small kiss is pressed to the tip before the Nomu pulls away.

"Ah-- C-Careful.." Izuku mumbles, feeling himself jolt a small bit as he felt the tongue lick up the mess. Thankfully, though, it's cleaned up fairly quickly, and he watches with tired, yet curious eyes as the Nomu proceeds to grab clothes. He can't help the soft little grin as he turns to lay on his stomach, arms curling under the pillow. He feels so tired... but happy.

His eyes are already closed by the time Katsuki returns, and when he feels the Nomu practically laying on him and still marking his neck, he shivers.

"Kacchan..." He complains softly, turning his head so he can expose more skin. Even though he knew he'd have to deal with a lot of questions come morning, he didn't really mind the possessiveness Katsuki was showing. It made his heart flutter, hearing that he was his. His. Izuku can't hide the little smile, turning to curl his body into the Nomu. So warm..

"Mmm.. you sleep, too." Izuku mumbles, keeping his head tilted for Katsuki. "I love you, Kacchan.." He mumbles sleepily and, from there, it's not surprising that he falls sleep within minutes.