1x9 - Happy Marriage!?

Hokuto is stabbed by someone. While he is hospitalized, Takayuki closes a deal and saves Mamiya Fiber from its crisis. Chiwa finds out that Seiji has pancreatic cancer but Hokuto refuses to visit him. Hokuto tells Misaki he can't work with her anymore because he doesn't want to hurt Chiwa's feelings. Chiwa goes to Hokuto's house to find out who killed his mother...