As sadomasochistic yakuza enforcer Kakihara searches for his missing boss he comes across Ichi, a repressed and psychotic killer who may be able to inflict levels of pain that Kakihara has only dreamed of.

• Omega Project
• Omega Micott Inc.
• Tadanobu Asano
• Nao Ômori
• Shinya Tsukamoto
• SABU
• Paulyn Sun
• Susumu Terajima
• Shun Sugata
• Toru Tezuka