A teenager named Noriko Shimabara runs away from her family in Toyokawa, to meet Kumiko, the leader of an Internet BBS, Haikyo.com. She becomes involved with Kumiko's family circle, which grows darker after the mass suicide of 54 high school girls.
| Actor | Role |
|---|---|
 Kazue FukiishiNoriko / Mitsuko | Noriko / Mitsuko |
 TsugumiKumiko / Ueno Station 54 | Kumiko / Ueno Station 54 |
 Yuriko YoshitakaYuka / Yoko | Yuka / Yoko |
 Ken MitsuishiTetsuzo Shimabara | Tetsuzo Shimabara |
 Shirô NamikiIkeda | Ikeda |
 Sanae MiyataTaeko Shimabara | Taeko Shimabara |
 Yoko MitsuyaTangerine | Tangerine |
 Tamae AndoBroken Dam | Broken Dam |
 Naoko WatanabeCripple #5 | Cripple #5 |
| HHanako OnukiMidnight | Midnight |
| CChihiro AbeLong Neck | Long Neck |
 Sora TômaKumiko's Spokesman | Kumiko's Spokesman |
| TTakako KitagawaKumiko's Mother | Kumiko's Mother |
 Kazumasa TaguchiKumiko's Father | Kumiko's Father |
| KKanehiro RiNot listed | Not listed |
| SShingo IshikawaNot listed | Not listed |
 Akari OzawaNot listed | Not listed |
 Maki MizuiNot listed | Not listed |
 Yuya IshikawaNot listed | Not listed |
 Makoto YoshinoNot listed | Not listed |