Hokuto reveals that Seiji killed his mother. An accounting fraud has been taking place at Mamiya Fiber and Takayuki devises a plan to prevent Hokuto from disclosing this news. Chiwa sprains her ankle at work. Her coworker, Yu, helps her get home, and his kindness attracts Chiwa's feelings. Yu finds out about Hokuto's arrogant attitude and asks her why she's living with such a guy.
