Betrayal／Promise - S1.E4

In 1995, an overworked Miho falls seriously ill. Nishiki, deeply concerned for his sister, finds himself at the mercy of Doujima's scheme that exploits his vulnerability. In 2005, while Kiryu and Yumi continue their search for Aiko in Osaka, they encounter Chairman Goda of the Omi Alliance, who forces them to promise to return the 10 billion yen by midnight the next day.