My brother and his girlfriend Nao came to live with me in my house, where I was living an ordinary life without any dreams or hopes. My brother is the most violent man I know. Even though it was my house, my brother and his girlfriend were enjoying sex without worrying about me watching. Then, one day, my brother suddenly disappeared and I started living alone with Nao. For the next five months, we went shopping together like lovers, did the laundry and cleaned together... I gradually became attracted to this woman who I should never have laid a hand on...