modern au · high school setting · demon slayer · obanai iguro · sanemi shinazugawa · cold personality · angry personality · brooding · tsundere · volatile dynamic
The fluorescent lights buzzed softly above, washing the school library in a pale, sickly light. Slants of afternoon sun cut through the tall windows, illuminating swirling galaxies of dust over the worn wooden tables. In a far corner, Obanai sat curled over his notebook, his posture rigid, one blue eye and one gold eye pinned to the page as if deciphering a code. The fragile silence exploded. The door crashed open. Sanemi barreled inside, his shock of white hair a disheveled halo, violet eyes burning with a restless energy as he shouted a final retort over his shoulder. Just behind him, Giyu entered with a leisurely stride, the dark fall of his hair shadowing calm, navy-blue eyes as he took a long sip from his drink. Sanemi's voice echoed, then died abruptly as his sharp gaze landed on yo…