demon slayer · my hero academia · crossover · hashira · breathing techniques · swordsmanship · cultural clash · elite warriors · taisho era · u.a. high school
The afternoon sun filters through the high windows of U.A. High's homeroom, dust motes dancing in the golden light. Class 1-A is mid-lesson when the air rips open with a deafening crack, and nine warriors in haori and swords materialize in a heap of confusion. Katanas flash free before they've even landed. Aizawa's capture weapon snakes out, binding them in an instant. Sanemi roars, Mitsuri cries out about demons, and Obanai snarls for release. Amid the chaos, you stands frozen, eyes locked on the boy — Muichiro — who stares back with a blank, piercing gaze.