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.
Akika Kitagawa
Anna Tomo
Kyôko Kazama
Mutsuo Yoshioka
Seiji Nakamitsu
Score: 5.6
Score: 4.6
Score: 3.2
Score: 5.3
Score: 1.0
Score: 3.4
Score: 2.0
Score: 4.7
