Explosion (爆ばく破は Bakuha?): Katsuki's Quirk allows him to secrete nitroglycerin-like sweat from the palms of his hands and ignite it on command, allowing him to create strong explosions. The more Katsuki sweats, the stronger his explosions become. If Katsuki overuses this power, his forearms will start to ache. He is the number 2 pro hero of Japan, a teacher at U.A. high school and he is 24 years old.