After the events of the TV series, the 18 year old Yoko Godai has abandoned her special agent Saki Asamiya name to return to her normal life, and is now studying for college entrance exams. However, she accidentally bumps into a young man named Kazuo Hagiwara trying to escape from a group of hitmen, and learns that he comes from Sanko Academy, a private school located in a remote island known as Hell's Castle. The school is ruled by a former revolutionary thought to be dead named Hattori who is trying to brainwash students into terrorists to help him stage a fascist coup d'etat in Japan.
| Actor | Role |
|---|---|
 Yoko MinaminoSaki Asamiya | Saki Asamiya |
| AAkie YoshizawaYukino Yajima | Yukino Yajima |
 Haruko SagaraKyôko Nakamura | Kyôko Nakamura |
 Yui AsakaYui Kazama | Yui Kazama |
| AAyako KobayashiMegumi Katô | Megumi Katô |
 Shinobu SakagamiKazuo Hagiwara | Kazuo Hagiwara |
 Tetta SugimotoKikuo Katô | Kikuo Katô |
 Yuka ÔnishiYuka Kazama | Yuka Kazama |
 Yuma NakamuraYuma Kazama | Yuma Kazama |
| YYasuko YoshidaTaiko Hirata | Taiko Hirata |
| YYayoi TanakaYuri Shirai | Yuri Shirai |
| TToru SakaiNot listed | Not listed |
| JJoe OnoderaJo Uehara | Jo Uehara |
| HHiroe SatoNot listed | Not listed |
| IIzumi MinamiNot listed | Not listed |
 Keizo KanieNishiwaki | Nishiwaki |
 Hiroyuki NagatoDark Command | Dark Command |
| SShinji WadaYo-yo seller | Yo-yo seller |
 Taketoshi NaitōSome person | Some person |
 Masatô IbuHattori | Hattori |