Manyû sanshimai: Ire kui rankô
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.
- Year : 2007
- Country : Japan
- Genre : Comedy
- Studio : Tantan-Sha Company, Okura Pictures
- Keyword : softcore, pink film
- Director : Sachi Hamano
- Cast : Akika Kitagawa, Anna Tomo, Kyôko Kazama, Mutsuo Yoshioka, Seiji Nakamitsu, Naohiro Hirakawa