[Reducing Mosaic]SAME-184 I never thought that Dad was raping my sister... Someday, I'll end up lusting after my sister. That's why I ran away from her, but it turned out like this. Shishido Rifo

Eight years ago, my father remarried and I and Riho became siblings.We're not related by blood, but we've become a family.For a happy family.But... before I knew it, I had become aware of my younger sister as a woman.I was scared to be with him.I'm sure one day I'll become aroused by my younger sister.So I ran away from my sister.Using my busy university life as an excuse, I had escaped from my desires, and before I knew it, I hadn't returned home for a year.During that time, Riho was raped by her father...