My name is Ryoichi. 22 years old, 4th year university student. One day I suddenly decided to live together with my sister-in-law Arare for 10 days alone. But in fact, I have a bittersweet feeling with my sister-in-law. When I was a student, when I was a junior and senior in the track and field club at the same school, I confessed that I fell in love with Arare's sister-in-law. That kind of thing happened, but... I can't stand living with a woman I've fallen in love with once...!
