The mystery of how Kazama Kimichika became so ruthless and unmatched will be revealed. Kyojo Zero depicts the time before he was assigned to the police academy, when he was working as an instructor in charge of training new detectives...

• Takuya Kimura
• Eiji Akaso
• Yui Aragaki
• Takumi Kitamura
• Shota Sometani
• Mai Shiraishi
• Mayu Hotta
• Takahiro Hamada