Ambiguous (2003)
Ambiguous aka Waisetsu Netto Shūdan Ikasete!! and Group Suicide: The Last Supper is a 2003 Japanese Pink film directed by Toshiya Ueno. It was chosen as Best Film of the year at the Pink Grand Prix ceremony.
More at Wikipedia.
Director: Toshiya Ueno
Distributor: Kokuei
Release date: December 9, 2003
Running time: 63 min.