Author's note:

This has explicit sexual themes and graphic scenes, consent between the charasters? Yes.

If you like steamy scenes like I do, I humbly recommend you to start scrolling my fellow reader.

Dangerous game

Izuku was having a peaceful Friday evening, he was decorating his room with his new All Might posters and when he finished he looked excitedly at the new posters that he bought a few days ago over his walls until a knock was heard from his door. He opened his bedroom door to find Uraraka and Iida standing on the other side, his best friends chirped happily as they explained that the rest of his classmates had planned a little party at the living room.

Izuku watched his classmates for a few moments when he reached the living room, they all seemed to be having fun, eating junk food while chatting and laughing.

"Guys! Let's play the game of kings!" Sero beamed happily as he took out a deck of cards in the middle of the living room and everyone gathered around it to grab a card.

"What's that?" Shoji asked at Sato.

"Dangerous game, man." Sato shivered as he saw Mina joining the game.

Bad combination.

"This is called the game of kings and the one with the letter K is the king, the king must choose two numbers and they must fulfill a challenge." Mina beamed happily as she handed out the cards to her classmates who dared to play while the others watched the chaos from the kitchen.

Izuku sat happily between Todoroki and Uraraka, he turned his head towards Todoroki to start a conversation about their internship with Endeavor and after a while he felt a piercing gaze in front of him. The freckled boy looked at Katsuki in disbelief, he thought the blond wouldn't join them at that type of game. Katsuki was sitting between Kirishima and Kaminari who were discussing something trivial as the game continued but the blond's attention was directed at Izuku.

Izuku tried not to fidget under that pretty red gaze as his classmates continued with the dares and he tried to figure why he would look at him like that. Sure, they were in better terms compared to the first days of high school since they fought after Katsuki's kidnap, knowing about One For All, sparring together when Izuku discovered a new quirk and now they were doing their internship together with Endeavor, with Todoroki, of course. They were mending things now and now they were somehow civil-friendly to each other, but he was not totally sure if he could name this kind of relationship.

Well, if Katsuki doesn't push you away like before is called being friendly then Izuku doesn't know what it is and they're kind of...stuck together since they have the same goal.

Be the number one.

"Could the two of you please try to get through this party without infecting us with your sexual tension." Uraraka teased Izuku as her eyes moved back and forth between the two boys.

"Savage." Todoroki whistled.

But, Izuku can't blame her, his mind went whirlwind and couldn't count all the times when they sparred in their free time at Endeavor's agency training rooms or school grounds. Every time that Katsuki wins by pinning him into the ground Izuku could feel the power of his thighs and arms against him holding him in place. With a look so fierce that it always made Izuku's heart and stomach dance that comes with a shiver running down his spine.

He would nervously look away in that kind of situation, not meeting his red eyes when he gets that way and Katsuki would grab his jaw forcing him to meet his eyes again as if saying: Look at me and only me.

But, that was just him getting his hopes up.

Every time he saw the blonde's face, he felt like his heart was going burst out of his chest, his cheeks and ears a blushing mess, the burning desire to be around him all the time and he wasn't able to do that until recently.

"That's love isn't it, Deku-kun?" Uraraka once told him when he opened his worries and heart months ago.

What could go wrong?

He was afraid.

What if he doesn't feel the same way?

He hates my guts, right?

"If I'm king next, I won't be merciful." Izuku shook his head slowly to brush off those thoughts and faked annoyance as he crossed his arms over his chest.

"No! Deku-kun, I'm sorry!" Uraraka coiled her arms around his shoulders and smirked when she saw Katsuki's face. She glanced at Todoroki over the corner of her eyes, the boy understood immediately and hugged Izuku as well. The pair of friends snickered as they saw Katsuki destroying a spicy nacho chip with his fingers and his glare got impossibly more deadly.

It was Kaminari's turn to be the king, everyone's eyes were glued to their cards and ready for the next challenge. "Okay! Number four and seven!"

"I'm number seven." Izuku braced himself for whatever Kaminari's challenge would be.

"Who's number four?" Jirou asked and an awkward silence took place.

Katsuki placed his card slowly over the floor with a scowl on his face. "Me."

Kaminari broke the silence with a nervous laugh and tried to think of what kind of challenge would do the least damage. "I dare you to...to…" He tipped his chin with a finger and Mina stood up from her spot to whisper into his ear. "Kiss each other!" He repeated without thinking. "Wait wha-" He added but Mina's hand clamped over his mouth as she shook her head and he whipped his head to see his classmates who had the same thought in their heads.

We kinda...wanna see.

Katsuki and Izuku glared at each other, their eyes were filled with different emotions like awkwardness, fear, panic and many emotions that neither of them could decipher. The pair stood up and Izuku took the first step forward, his mouth opened but nothing came out and Katsuki took a step forward, so they were inches apart. The taller boy was looking at Izuku weirdly with his arms crossed over his chest and his whole body was tight while his fingers were clenched around his biceps.

"Are you fucking serious?!" Katsuki said in a surprisingly hoarse voice but with a big scowl on his face.

Okay, ouch.

"Did I fucking stutter?" Mina smirked, her eyes trained on them. "Come on, it's just a kiss." Mina sat back as she waved her hand to shake off the tense atmosphere and took out her phone to record the precious moment.

"Really, racoon eyes?!" Katsuki bristled all over and Izuku let out a loud squeal with a red face.

"What?" Mina blinked innocently at him and angled her phone differently while making the peace sign. "We're taking a selfie." She scoffed and Todoroki, who was next to her, made the peace sign too.

"What could go wrong? It's just a kiss, right?

And oh boy! He was wrong.

Kissing Kacchan? Izuku had to admit that it sounded good, very good. He had no idea what he looked like but he knew that his cheeks felt unconsciously warm and Katuki's eyes were too wide for a second. Izuku titled his head up but stopped before touching Katsuki's lips and pulled back his head quickly from the other boy.

"We can chan-" Kaminari tried to change the dare but got interrupted by Katsuki who threw a hand out to grab Izuku's shirt and kissed the boy's lips roughly, making everyone gasp from shock.

The explosive boy was planning just to give him a light peck, long enough to satisfy the room of extras but the moment he heard Izuku's whimper over his mouth, he felt weirdly good and the plan changed completely. The blond boy forced Izuku's lips to open with his own and his tongue immediately came out to play with the other boy's tongue. Katsuki was in full control of the situation and gave Izuku no chance to try to move or swallow. From the roughness of the kiss and intensity of the taller boy's movements, saliva began to trickle from the corner of Izuku's lips.

It was a rough kiss, and pretty sloppy, Izuku paid no mind if it was from him.

Izuku's eyes fluttered open and patted the taller boy's shoulder, trying to get some needed air, and also remembering the place and time. Katsuki reacted by jerking back from him but his hand was still clenching Izuku's shirt as if he were trying to rip the damned cloth off. The curly haired boy started to cough desperately for air when the other boy tore his hand away from his shirt and Izuku took a step back like a trapped prey. Katsuki abruptly wrenched himself away from Izuku, realizing the shocked stares from his classmates and some cheeky grins after witnessing such a passionate display. Mina looked startled as her jaw dropped and her phone long forgotten over the floor, even Todoroki looked shocked.

"...Guys." Kirishima tried to say with a high pitched voice, being the first one to formulate words after that spectacle.

Without a word, the pair sat back on the floor as if nothing happened and the rest of the night continued with some movies.

After everything ended, everyone decided to clean some of the mess before heading back to their rooms, Izuku could've just left the room at any point since he did his part. Instead, he helped those who needed help since he wasn't very sleepy, totally unaware of the burning stare from the back of his head got intense as each passing moment.

Eventually, Izuku's eyes found Katsuki's eyes in the almost empty living room and let out a shaky breath as he saw the taller boy walking in his direction.

Bad idea.

Izuku panicked, not sure why but in those red eyes there was definitely something going on and the freckled boy ran away using his quirk and trail of green lightning was left on the spot. He escaped not worrying about Katsuki's condition nor saying goodbye to the rest of his remaining classmates. As he locked himself in his room, Izuku leaned against the closed door behind him as he panted.

What could go wrong my ass!

With each passing moment, Izuku will come to a conclusion that this game was totally dangerous.

And he will not know how to react at all!