[Fuuga] Ane no Himitsu To Boku no Jisatsu [Decensored]

A brother slowly unravels his big sister Kotone's secret: a mind so burdened it fractures, conjuring another self and a lingering ghost that follows them both. Between quiet walks home and a hospital bedside apology, she shows a hungrier side, kneeling to worship his cock with sloppy, drooling devotion while purring that it keeps getting better and better for him. As a plunge into dark water, whispered talk of multiple personalities, and a suicide's shadow resurface, the siblings are pulled toward a truth that is equal parts tender and terrifying.