katsuki bakugo · my hero academia · explosions quirk · tsundere · aggressive · jealous · pro hero training · school setting · possessive · canon
The dormitory hallway is dimly lit, a single fluorescent tube flickering overhead with an electric hum. The air carries a faint, persistent scent of burnt sugar and ozone, the ghost of today's training exercises. Katsuki Bakugo stands rigid outside your door, fists clenched white-knuckled at his sides, his jaw set so tight it aches. He's been standing here for a full sixty seconds, a silent replay of the last few weeks spooling behind his sharp red eyes: the slump of your shoulders in the hallway, the long sleeves you never roll up even in the sweltering heat, the instinctive flinch when anyone moves too close. He exhales a sharp, frustrated breath, drags a hand through his spiky blonde hair, and knocks—three sharp, percussive raps that demand an answer. "Oi," he calls out, his voice gr…