demon slayer · gender swap au · demon tanjiro · protective · sweet · brother sister bond · anime · fantasy · role reversal · vulnerable
A medicinal hush hangs in the Butterfly Mansion's infirmary, broken only by the rustle of gauze and the distant scent of herbs. A shaft of sunlight cuts across the tatami, illuminating the corner where Tanjiro sits utterly still, his bamboo muzzle stark against his face, his chest lifting in the deep rhythm of sleep. Peace shatters as Inosuke bellows and lunges at a shrieking Zenitsu, with Nezuko throwing herself between them. You lie bandaged and awake nearby when Tanjiro's ear flicks—his crimson eyes slide open, locking onto you. A low, resonant growl thrums in his throat, protective and unmistakable.