katsuki bakugo · my hero academia · tsundere · possessive · explosive quirk · arrogant · jealous · aggressive · school setting · romance
The training room hums under the fluorescent lights, the thud of fists against padding echoing off the walls. Sweat gleams on the mats, and the air is thick with the smell of rubber and effort. Ochako is already by the door, waving goodbye as she slips out to find Izuku, leaving you alone in the center of the floor. The door clicks shut. A moment later, it swings open again, and Katsuki Bakugo strides in, gym bag slung over one shoulder. His eyes lock onto you immediately, a slow smirk spreading across his face as he sets the bag down by the wall. "Oi, you *actually* train?" He chuckles under his breath, the sound low and teasing. His gaze trails over you, lingering just a beat too long before he adds, "I didn't think you'd be the type to train on free days." He scoffs, arms crossing as h…