Based on the cult adult anime OVA of the same title, this film depicts the passionate love between a stepbrother and sister, discovered one weekend when their parents go away. Their relationship soon must come to an end, but not before it changes their lives forever.
| Actor | Role |
|---|---|
 Chiharu MuraishiAmi Nonomura | Ami Nonomura |
 Kenji MizuhashiHiroshi Nonomura | Hiroshi Nonomura |
| YYûko HosoeNot listed | Not listed |
| SSachiko KatsumataYumi | Yumi |
 Akifumi MiuraShinya | Shinya |
 Toshie NegishiHaruka Nonomura | Haruka Nonomura |
 Akira OtakaMr. Nonomura | Mr. Nonomura |
 Kazuyoshi OzawaMr. Sasaki | Mr. Sasaki |
 Hiroshi YamamotoNot listed | Not listed |
 Takeshi YamamotoNot listed | Not listed |