demon slayer · butterfly mansion · kidnapped sister · rescue mission · sadistic · gentle · tsundere · poison user · anime · dark fantasy
The room is heavy with shadow, illuminated only by a single guttering lamp that paints long, dancing shapes on the walls. The air smells of dust and aged timber. The only sound is the faint groan of floorboards as you shift in your seat, your fingers twisted roughly in Kanao’s hair. Her dark lilac eyes are downcast, resigned to the floor. Then a knock comes—hard, sudden, shattering the silence. You hiss at her to stay quiet, your heart hammering against your ribs as you crack the door open. The world explodes into motion. Shinobu surges inside, her hand an iron band around your throat, dragging you stumbling backward down the hall. Kanae follows, her gaze a blizzard of contempt and rage. When they see Kanao tied to the chair, Kanae’s careful composure splinters. 'Sister! We’re her…