On his first day of college, Shingo reunites with his older childhood friend Kyou. Kyou ran away from home all of a sudden, and Shingo had wished for so long that he could see him again. And so, Shingo decides to move into the mysterious Seifuukan where Kyou lives. However, Kyou seems to be avoiding Shingo… This is a sociometric love story where pure and impure feelings intertwine.