Drowning in a Dry Room [Part 2] Takao meets with Sakurai to get more information on the case. Sakurai reveals that Daiki was suspected of being involved in selling illegal stimulants, and also received a large sum of money from an unknown source. He also reveals that the police plan to formally arrest Seiji for Daiki's death, since all of the available evidence points to him being the only possible killer, especially since it is clear he is lying about his alibi. With no other choice, Takao and Yu track down Seiji to question him themselves. Seiji tells the same story he told the police, but Takao deduces that he was meeting Yuko in an illicit affair, observing that Seiji's head wound did not heal naturally, but was instead closed using Z-plasty, a technique a plastic surgeon like Yuko would know. Seiji admits that he is in an affair with Yuko, and lied about his alibi so as not to implicate her. However, despite Yuko being willing to back up Seiji's alibi, Sakurai points out the police will ignore it since Yuko has reason to protect Seiji as his lover. Takao and Yu then focus on trying to solve the case itself, and watch a video recording of when Daiki's body was discovered. Both Takao and Yu spot something odd in the video, and Takao lures the true suspect into a trap so she can confront them.