SORA-441: Kana-chan Yura Kana, an older sister who offers a substitute Ma ● Ko to protect her young sister Mana from her uncle who has an abnormal libido

An uncle who lives alone in the mountains ... It's a great nature, so I think I looked forward to going there every year. However, in fact, the uncle and mother were paying the debt with their bodies without the knowledge of the little sisters. - Kana, the older sister who can't read the situation, but her uncle teases her sister's mana with obscene words like a habit. Kana, who wants to help her sister and mother somehow, accepts her uncle's hopelessly disgusting propensity. However, gradually the disgust ... Gradually dominate Kana's body ... Myself more than my sister. I'm more of a self-absorbed person than my mother.