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Shouto had grown accostumed to the use of nicknames around class 1-A, particularly those given to him by one Bakugou Katsuki, he called him a handful of names, wich was pretty unfair. Midoriya and Bakugou had nicknames for each other, and while Bakugou called him a different way almost every day, he only ever used his lastname.
He wanted to return the gesture, not to be a bad friend, but he couldn't come up with one that sounded right, like the ones Bakugou gave, these tended to be quite fitting. There was no doubt he would chew him alive if he called him a half-assed intent of a nickname.
He could try calling him "Kacchan" but two others did that already, it wouln't get across the message that he appreciated their friendship as much as Bakugou did.
One that described him didn't seem appropieted, refering to his strenght would only encourage him to insist on sparring together.
It was an unexpected discovering what lead him to a solution.
Having into consideration Bakugou's quirk, he thought his hands must pretty warm, as a consequense of the explotions he let out constantly. An accidental brushing of hands would prove him wrong on his guessing, they were cold as the ice he himself produced.
"Oh." He mused at the sudden realization. The blond raised an eyebrow in question. "You're Icyhot too."
Midoriya sputtered in the background, shaking his head at him while Kaminari cracked at Bakugou's shocked face. "The fuck did you just call me?"
"Hm, It makes sense. You have a heat based quirk but your hands are cold." nodding at himself, he keept going "Icyhot." Said as if added up.
The explosion took him by surprise.
"CALL ME THAT AGAIN AND YOU'LL FUCKING DIE" The blond walked away. "Stupid Half'n'Half..." Grumbled.
Shouto frowned, Wasn't the best nickname one created by Bakugou himself? Couln't he call him that? Then again, he told Kaminari to stop calling him "Kacchan" but he keept doing it, surely he could get away with it too.
It felt nice. He had a nickname that not only showed their friendship, it also pointed at a similitude that, although a pretty silly one, they shared.
Bakugou might fume at being called "IcyHot" but wouldn't fullfill his threats, after all, he couln't get angry at a nickname given by a friend.