The whole class basically tensed up at the sound of Katsuki growling, especially izuku. He sat right in front of his childhood friend kacchan, and even though he really wanted them to be pals, kacchan made that very difficult. Izuku decided to slowly turn around in hopes that maybe he wasn't the problem (as usual), but once he mad eye contact with Kacchan he gritted his teeth and growled even louder. His eyes seemed to turn redder then they already were when he narrowed them at izuku so izuku quickly faced back forward and tried to hold back a whimper. "What did I do?! What this time?! Im literally just sitting here minding my business" izuku thought to himself. He then slumped down in his seat and lowered his head with a loud sigh "why doesn't he like me?".
"Stupid stupid deku, I could just kill you right now" kacchan thought silently to himself. Lately, kacchan has been very frustrated with izuku. He didn't exactly know why, but he knew it was getting bad. In their childhood years, izuku had always looked up to katsuki and he loved that about him. Izuku made him feel powerful at such a young age and even when he'd make fun of him, izuku would still be around. It pissed him off but he loved it. He loved it a lot. Over the years, those feelings were growing stronger and stronger and eventually, he couldn't take it anymore. Izuku was getting stronger with his amazing quirk and it was starting to make kacchan suspicious. Was deku trying to tell him something? That he didn't need him anymore? That he was now stronger so kacchan should be looking up to him? "As if that would fuckin happen, little bastard" kacchan said thought getting more mad. "Watch Ill show you who will always be the powerful one between us".
As the day ended, everyone was getting ready to head home. Izuku was the last to pack his stuff because he had been too busy distracting himself with his mumbling. "I should probably go see if All Might has any training tips for me today" he said to himself. "Why? So you can get on my nerves even more you shitty nerd?!" izuku heard from behind him and froze. He slowly turned around and saw Kacchan walking in with fire in his eyes and closing the door. He makes sure he locks it before heading to deku.
Izuku starts to secretly panic. He was locked. In a room. Alone. With kacchan! The person who basically wanted him dead. "W-wait kacchan, m-maybe we can just talk? Things don't have to get physical again right?" izuku asked with hope. He already had scars from is last beating from katsuki and they still haven't healed. "I doubt thins aren't gonna get physical, but don't worry ill give you different kind of pain" kacchan said smirking getting closer to izuku. Izuku unsure what to do, wasn't ready for another fight with kacchan. He tried to make a quick dash for the door but he wasn't quick enough. Kacchan quickly grabbed izuku by his arm and slammed him against the wall, causing him to yelp and close his eyes in pain. Katsuki loved the sound of it.
Kacchan quickly took izuku's other arm and put his hands above his head and pinned him against the wall. This was new to izuku but he was still scared. "Kacchan please don't do this" he pleaded. He didn't want kacchan to hurt him. Kacchan took izuku's face with his free hand and yanked him so that he made direct eye contact with him. "Your gonna do what I tell you" he growled. "I want you to know, that I will always be stronger than you and you'll never beat me. IM the dominant one, got it?!" As bad as izuku wanted this to end he couldn't bring himself to agree with kacchan. He thought that he really was getting stronger and tougher, he couldn't let kacchan think he wasn't working just as hard as him. "N-no" izuku mumbled facing away from kacchan. Kacchan was shocked at izuku's response. "What?!" he asked as he yanked deku's face back towards him. "I said no!" izuku said with teary eyes, "I know you're stronger then me kacchan but im gonna try my best to get stronger because I want to be the #1 hero". When he was done speaking he braced for impact.
Of course, kacchan was crazy mad now. He tightened his grip on deku's hands which caused him to whimper. He wanted to him to feel his wrath. He wanted to teach deku a lesson, something he'd never forget. Katsuki decided he was gonna do things differently this time. He looked at deku's lips and seen they were quivering. It made him feel fire in his heart knowing he could make deku react to him in anyway he wanted. He quickly leaned in and pressed his lips against deku's and made sure he was rough about it. Izuku quickly opened his eyes and stared at kacchan but kacchan wasn't worried or nervous, he stared izuku right back in his eyes. Izuku closed his eyes and tried fighting kacchan off but he got weak in the knees and gave in. He had never been kissed before and certainly didn't think that his childhood friend would be his first, but he couldn't help but actually like it. He could feel his face is beyond hot and he could barely breath. Kacchan bit on deku's lower lip. Deku gasped and as soon as he opened his mouth kacchan stuck his tongue in and immediately started to explore every bit of it.
Kacchan left his mouth and started sucking on deku's neck. He licked up and down and couldn't help but get even more turned on at izuku's little moans. Kacchan stopped and looked at deku's face. He was breathing terribly heavy, his eyes were half way open, and face completely red. He grinned at his work. "Say it". Izuku looked at kacchan with a confused expression. "Say I'm gonna be #1" kacchan told him as he started to play with his neck again.
Izuku couldn't believe what was happening. He was so ready to give in to kacchan but he couldn't, not yet. "I'm sorry kacchan, b-but I wont!" he managed to say through heavy breathing. Once kacchan heard this, he snarled and bit down hard on deku's neck causing him to shriek as his eyes popped open. "Aaah-ah, kacchan please!" deku managed to beg. Just then izuku realizes he's actually hard. 'Why am I actually enjoying this' he thought, 'I want it to end but if he stops touching me, I might cry'. Katsuki was able to see the pleasure in deku's eyes, and he was getting turned on more and more with every sound out of him.
Kacchan grabs deku by his shirt and throws him on the nearest desk which was his own. "Still not gonna say it?!" kacchan asked. When izuku slowly shook his head no, kacchan ripped off deku's jacket, shirt, and pants and tossed it to the side. However, he did keep deku's school uniform tie. "Last chance, say it" Kacchan warned. Izuku opened one eye half way and was breathing hard from his mouth but he quickly closed it and shook his head slowly at kacchan, he couldn't let him win.
Kacchan gave izuku a wide evil-looking grin, making izuku more scared of him. Kacchan was actually hoping was actually hoping this time he'd refuse him. He took the tie and quickly wrap it around deku's head and tied it so that it would be in his mouth, Deku noticed it was tight and that he was barely able to talk now. When he looked back at kacchan, his eyes widened with disbelief. Kacchan was slowly pullig down is pants exposing his erect member. As deku tried to squirm away, kacchan pulled him back and spread his legs open exposing izuku. Izuku tried to give kacchan pleading eyes, "p-leash beh gentill" was al he was able to spit out due to the tie. Kacchan only looked him and laughed, he went close up to deku's ear and whipered "I warned you, now I'm gonna make you dream about me".
With a quick but steady movement, kacchan entered izuku and made him yell through his tie. He couldn't believe what was happening, kacchan was actually in him right now. It sent pain but so much more pleasure through his body. "Fuck!" kacchan spat under his breath, "if I knew you felt this good I would've taken your innocence months ago". Kacchan slowly pulled out, and plunged right back in. With every motion he made he loved it so much, especially seeing deku underneath him moaning and drooling over his dick. "Cry for me deku" kacchan said as he thrusted harder into him. "Aaa-ah, Kacchan!" deku managed to yell. Thank god it was way after school hours. Izuku couldn't take it, he wanted more. No, he needed more.
All of a sudden, kacchan slowed down his pace and started thrusting softer. Izuku couldn't accept that. He looked up at kacchan only to receive a cold stare back. Izuku began to pout, "why-" "Say it" kacchan cut him off. Izuku layed his head back and turned away from kacchan's gaze. He wanted kacchan to keep going but he didn't want to seem weak (although, technically right now, he was weak to kacchan). Out of no where izuku yelped when he felt kacchan thrust all the way into him. "Don't you dare turn away from me deku! I will destroy you right now" kacchan snapped at deku as he pounded into him. He grabbed deku's neck with one hand and his hip with the other as he continued. "Now say it! Last warning!" kacchan told him, he was getting close to his limit.
Izuku removed the tie from his mouth (he knew he'd probably get punished later seeing he didn't ask to take it off) and gripped both sides of the table he was being fucked on. He took a couple of deep breaths in between his moans and then look up into kacchan's red eyes. "You'll be #1 Kacchan! You always have been and you always will be. You're the greatest person ill ever have and I love you so much!".
Kacchan immediately kissed deku hard and cursed him out a couple of times for being so cute. With a couple more extreme thrust, izuku reached his limit. He came all over his stomach and a bit on kacchan's as he threw his head back in pleasure, Not long after kacchan came inside of deku and collapsed on top of him.
They both laid there for a moment before deku made the first move. "Kacchan?" "What is it" kacchan responded hoping deku didn't say something cute. " Could-I please have a kiss?" he asked as his face turned redder than before. 'Shit' he thought to himself and gave izuku a long passion filled kiss. Izuku smiled up at him, "guess this means you'll always have power over me". Kacchan laughed, "you got that right…oh, and…I love you too" he said turning red. Izuku smiled then laughed and pulled kacchan in for a hug.