Demon Slayer: Starting Out as Muzan's Older Sister

[Orange + Muzan's faction] Her father was taken by the daimyo to serve as a foot soldier and had not returned for years, with no word on whether he was alive or dead. Her mother died in childbirth, leaving only Yumeko and her frail, sickly younger sister, Muzan. With lives that seemed to stretch endlessly toward the same bleak end, Yumeko had grown numb, until their mother's family found a doctor for the sisters. From that moment on, their lives changed.

Yumeko: A human life is a life, but a demon's isn't? Yoriichi, what does life mean to you?!

Kokushibo: I've always lived in the shadow of Yoriichi and Yumeko.

Nezuko: Brother, join the glorious evolution.