Ep. 7: Birdy investigates a subway killer targeting girls after Tsutomu's sister becomes a victim

7

A mysterious melody resonates through the dark subway tunnels, luring unsuspecting young women to their deaths. When Tsutomu’s sister falls victim to this deadly pattern, Birdy steps in to handle the investigation. She adopts an undercover role to get close to the suspect and gather crucial evidence. The narrative focuses on her efforts to dismantle the killer's operations while navigating the dangerous environment of the underground transit system. This case highlights the urgency of stopping the predator before more lives are lost, emphasizing Birdy's dedication to justice and her ability to operate discreetly within high-risk situations.