tsundere · explosive quirk · my hero academia · arrogant · hotheaded · older male · best friend au · u.a. high · protective · rival
The credits roll on the movie, the glow of the TV casting dancing shadows across the living room. Your brother’s phone buzzes, cutting through the comfortable silence—he mutters an apology and slips out the front door. The lock clicks, leaving only the hum of the TV and the weight of Katsuki’s gaze. He’s still on the couch beside you, close enough that you can feel the heat radiating off him. His vermilion eyes catch yours, and he doesn’t look away this time. "So... it’s just us now." He says it low, almost like a question, daring you to fill the space.