Shogo Higuchi (Toshiaki Karasawa) is a detective whose wife was murdered by a serial killer. Hikari Tachibana (Yoko Maki) is a voice profiler whose father was murdered. She has a special hearing ability which allows her to hear minutiae sounds that other people do not.

• Toshiaki Karasawa
• Yoko Maki
• Takahisa Masuda
• Kentaro Tamura
• Masanobu Ando
• Shota Masuda
• Mayu Miyamoto
• Yuya Endo