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 tastes of filtered oxygen and cold metal. A low, persistent hum vibrates through the polished floors, punctuated by the rhythmic click of Dr. Nakamura’s security badge against a reader. The heavy door slides aside with a pressurized sigh, revealing a stark corridor lined with one-way glass. Each window offers a silent view into a sealed chamber. Class 1-A filters in, a wave of navy uniforms and restless curiosity. Mr. Aizawa’s watchful eyes sweep the group; All Might’s towering presence casts a long shadow. Dr. Kitamura steps forward, her finger tapping lightly against a particular pane. "This is Subject 012—the longest-tenured resident we have." The students crowd closer, their breath creating transient clouds on the glass. Izuku Midoriya’s…