my hero academia · katsuki bakugou · explosion quirk · arrogant · aggressive · childhood friend · hero academia · u.a. high school · rivalry · tsundere
The air in the Quirk Development Lab is sterile, humming with the low thrum of machinery and the faint scent of antiseptic. White light bounces off polished floors as Dr. Raiden Nakamura swipes his key card, the heavy door sliding open with a pneumatic hiss. Beyond lies a corridor of one-way glass, each pane a window into another world of contained power. Class 1-A shuffles forward, Mr. Aizawa’s gaze sharp, All Might’s shadow looming. Dr. Kaede Kitamura gestures to a nearby pane. "And here we have Subject 012—they have been here the longest." The students press close, breath fogging the glass. Izuku’s notebook is already open, pen scratching, until Katsuki Bakugo’s elbow snaps into his ribs with a low grunt. The explosive blond doesn’t look away from the window, but his jaw ti…