Megumi Okina as Rika Nishina

Misa Uehara as Izumi Toyama

Yoji Tanaka as Yuji Toyama (uncredited)

Misaki Itō as Hitomi Tokunaga

Kanji Tsuda as Katsuya Tokunaga

Shuri Matsuda as Kazumi Tokunaga

Kayoko Shibata as Mariko

Yui Ichikawa as Chiharu

Yukako Kukuri as Miyuki

Takako Fuji as Kayako Saeki

Yuya Ozeki as Toshio Saeki

Takashi Matsuyama as Takeo Saeki

Hirokazu Inoue as Detective Nakagawa

Daisuke Honda as Detective Igarashi

Yoshiyuki Morishita as Keibiin

Hideo Sakaki as Fukushi Senta Jimuin

Chikara Ishikura as Hirohashi

Chikako Isomura as Sachie

Chiona Ôkuni as Person in Elevator

Miho Fujima as Joshi Ana

Mao Kobayashi as Student

Aki Fujî as Yoko Toyama

Risa Odagiri as Saori

Kaori Nakajô as Chiaki

Kana Kobayashi as Ayano

Akira Saito as Teacher Sekine

Isao Yatsu as Saito

Haruka Yamano as Fukikae

Hiroyuki Yokoo as Nurse (voice)