Ryo Narita

Fujiki Keisuke

Nana Mori

Sawai Mikako

Hitomi Miyauchi

Yagami Taeko [Keisuke's lover] | [Narrator]

Soko Wada

Sujikawa Nihei [Detective]

Atsuko Maeda

Karasuma Kyoko [Taeko's friend]

Ken Yasuda

Sasaki Yoshiro [Researcher]