Irina, the third daughter of the three Nemoto sisters, is a plain, college science student who wears a white coat and glasses at school. It seems that things are going well with her boyfriend Soga. One day, while Irina is studying ancient Japanese history, she discovers a system in which women share a man sexually.
| Title | Manyû sanshimai: Ire kui rankô |
|---|---|
| Release Date | 2007-03-23 |
| Runtime | |
| Genres | Comedy |
| Production Companies | Tantan-Sha Company, Okura Pictures |
| Production Countries | Japan |
