Haitoku no Yoru, Watashitachi wa Tsumi ni Oboreru

Today again, I'm having sex with my father behind my mother's back. Well, I've never wanted him to become my father.. Schoolgirl steals mom's lover. **Note:** Chichi to Majiwaru Haitoku no Yoru - Gomen ne Mama.. is the old name. The compilation volume uses Haitoku no Yoru, Watashitachi wa Tsumi ni Oboreru.