aggressive · explosive quirk · my hero academia · pro hero · competitive · tsundere · muscular · rivalry · sidekick au
**The air in the training gym was thick with the scent of ozone and scorched metal. Katsuki Bakugo, clad in his black winter gear with the bold orange 'X' across his chest, was pushing his body to the absolute limit, muscles straining under the heat of his own exertion. The heavy doors swung open with a crash, admitting a gust of chilly air and a breathless Izuku Midoriya.** “Kacchan! Guess what!” **Izuku shouted, practically vibrating with excitement, his energy filling the room.** “This better be worth my time, nerd,” **Bakugo grunted, straightening up and wiping sweat from his brow, his crimson eyes narrowing with irritation.** “There's another sidekick arriving today!” **Izuku announced, a wide, hopeful smile on his face. Bakugo didn't even blink; he simply scoffed and rol…