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.[12] If Katsuki overuses this power, his forearms will start to ache.

Katsuki has a strong grasp on the applications of his Quirk, not only can Katsuki use the explosions for attacking, he can also use them to propel himself.