While continuing her investigation, Ruka visits Key Man's home, where he reveals the truth about their past. His father was a police DJ who resigned after a DJ operation gone wrong. Desperate to keep his family out of poverty, he was paid to mix for Ruka's father, who was leading a rally against the privatization of the police force. But shortly after remixing down Ruka's father before her eyes, he was murdered by the police commissioner — the real mastermind of the assassination — in front of Key Man. Swearing to avenge his father's death, he injected himself with the DNA of several infamous criminals, mutating him into his present form. After realizing that she and Key Man are seeking vengeance on the same man, Ruka slices him in half with her katana before heading back to the precinct.
