Secret
Katsuki was used to watching Deku leave the dorms every Saturday at the same time, coming back hours later also at the same time for three years. He assumed he went home to see his mom.
But one week, Katsuki decided to follow him. It had been a long time since he had seen his parents. Katsuki then put on his camel coat and walked at a good distance behind the nerd.
After years of being in front of the greenette, it was weird being behind him. Katsuki wouldn’t admit that Deku had become fucking hot. Those black jeans were making this ass really nice. Not that he would admit it outloud.
Katsuki was too much into his thoughts that he almost didn't notice that Izuku turned to the left instead of the right, toward the train station.
"Where are you going, nerd?" Katsuki growled, irritated that he was wrong all along.
After all those years, Katsuki had never thought the nerd would keep a secret from him. Even for One for All Deku didn't keep it a secret very long! That only made Katsuki grind his teeth.
It was with anger and curiosity that Katsuki followed the little yellow backpack moving from street to street. Until they reached the hospital.
Suddenly Katsuki panicked. Deku wasn't injured and even if he was, there was an infirmary at school. But with time, he had learnt to stop having big injuries.
After 3 years it was about time! So why? Was Inko sick? He should have had a call from his mother about it. They were best friends after all.
It was with more curiosity that Katsuki walked toward the entrance and was surprise to see that Deku was being greeted by all the women from the reception with a lovely face. It was sick to see that.
Izuku smiled back then took the stairs.
Katsuki smirked. Since he had told Deku once he was a lazy ass for taking the elevator, he had seen Deku taking the stairs only because 'you're right, Kacchan. I should train my legs more! Thank you for your advice!'
It wasn't an advice. It was an insult. But Deku was Deku. Always seeing the good in Katsuki's attacks.
So he climbed the stairs slowly until Deku reached the door on the 4th floor. When Katsuki stepped out, he saw many walls painted in different colours and childish drawings everywhere.
Pediatrics.
The noise was unnerving, children crying everywhere, nurses running from room to room. Katsuki had never liked children. He couldn't understand them. And they usually didn't like him either.
Izuku on the other hand was perfect for them, always smiling and listening to them. Even when they were angry at him.
He spotted the green curly head stepping inside a room on his left. He decided to keep investigating until he was face to face with a bunch of children behind a large window.
They were all sitting in a circle, Deku on one of those tiny red chairs. He was doing movements with his hands and the children did the same.
A nurse pushed Katsuki away from the door when she opened it to go out and Katsuki's eyes widened at the realisation.
There was no sound in the room.
It was silent. Only the fabric of the clothes when the children were moving made some noises.
Izuku was talking to them in sign language.
Without anyone noticing, Katsuki entered the room and put his back against the wall. Some children noticed him but Deku didn't make the effort to acknowledge him.
Katsuki didn't mind. Well, that was a lie. He did mind it. But seeing Deku talking with only his hands was fascinating. The children replied without noise. Katsuki felt pleased.
A little girl gripped his jacket and pulled it to catch his attention. He looked down at her and she signed slowly, as if she was talking to someone who couldn’t sign. How wrong she was.
He smiled fondly when he signed back and the girl's eyes glittered with joy and she signed quickier.
They talked like that for a little while before Katsuki heard someone clear their throat. Katsuki turned his head at the noise and found Deku with the most beautiful smile he had ever seen.
"It's time to go. They need to rest," Deku said with a soft voice.
"Okay," Katsuki replied then let the little girl hug him before she left with the nurse.
Katsuki watched Izu—Deku clean the room. He tried to help but, for the first time, Deku pushed him away.
"Hey!" Katsuki groaned, "What was that for?"
"Kacchan," Izuku sighed but his eyes were full of something.
"Why are you here?" Katsuki cut off. "Since when can you sign?"
"Because it's what heroes are for. Helping people."
Katauki grabbed Izuku's hand when he passed by with his arms full of blankets.
"Since when?"
"Since you have your quirk, Kacchan."
"My quirk? But you never—"
"That's because I hoped I would be wrong."
"About what?"
They looked at each other, no sound except their breath.
"About you. About your future."
"My future?"
"That's nothing, Kacchan. I'm doing this for the children now. They need a Hero and who’s better than us, former Heroes?"
"I'm the one who judges if it's nothing, Deku. You're talking about me! Spit it out, nerd!"
"I was afraid you would become deaf one day because of your quirk! And I wanted to be able to stay your friend even if you couldn't hear me anymore…"
Karsuki's heart melted and so he turned his hand into a fist. Izuku would never let him go. Always being there for him. Always believing in him. Always taking care of his well being.
After all this time, Izuku had always wished to be next to him. Kacchan had always felt safe with him, even while being mean to him for years.
His body moved without his consent but Katsuki didn't mind when his lips crashed onto Izuku's.
The greenette gasped in surprise. Well, he would have if Katsuki hadn't pushed his tongue in his mouth. Katsuki smiled when Izuku fought and kissed back.
They kissed for a moment and when Katsuki pulled back he saw that Izuku's mouth was a mess. His lips were red and swollen and it was the most exciting thing Katsuki had seen. He wanted to bite them.
"Ka—Kacchan!" Izuku moaned when Katsuki pulled him closer, breathing against those red lips.
"Shut up and kiss me."
Thanks @cluelesspigeons for beta reading ❤️