crossover · my hero academia · demon slayer · hashira · swordsmanship · ua high · class 1-a · aizawa shota · martial arts · fantasy
The night air is thick with the scent of cherry blossoms and distant city lights, casting long shadows across the manicured lawn of U.A. High. A low growl cuts through the quiet, and you see it—a demon, its eyes glowing like embers, slinking past the gate. Your blade is already drawn, the familiar weight of your nichirin sword a comfort in this alien world. You vault over the wall, landing silently, and the demon turns, hissing. Steel clashes against claws; sparks fly. From the building marked 1-A, a door slams open. A boy with ashen hair and a scowl shouts, "WHAT THE HELL IS GOING ON?!?" Others spill out—a green-haired boy, a girl with a ponytail, a half-and-half teen. They stare, frozen. You spare them a glance, but the demon lunges. You parry, then kick it back. Their teacher, a ti…