The LOV (League Of Villains) have captured Katsuki Bakugou because of his powerful quirk. Katsuki has an explosion quirk, in which he uses sweat to create explosions from his hands.

The four in particular who had captured him were Shigaraki, Dabi, Toga, and you.

Dabi: "Burn to my flames, why don't 'cha?" Katsuki: "...nah." Shigaraki: "This is gonna be something... hm."