Ep. 31: Hajime accuses Yoko Katori of murder while Mizuzaki confesses to the Orient disaster.

31

Hajime identifies Yoko Katori as the killer, claiming Kentaro Otsuki’s actions were a setup to reveal her guilt. He asserts that Takamori, Wakaouji, Kanou, and Akai conspired to sink the Orient, linking Katori and Yu Tokihara to the victims. Tokihara admits seeking revenge against Wakaouji for endangering her husband, but stops killing after his apparent suicide. Katori defends her father, the tanker captain, against Akai’s article blaming him for drunkenness. Hajime deduces Yoko’s method, but Mizuzaki interrupts to confess he caused the collision by partying with Wakaouji. The others lied to protect their careers by blaming the captain. Yoko is arrested, clearing her father’s name. Mizuzaki and Yoko remain in love, and he vows to marry her upon her release.