Akari and Kazehaya are investigating Yamato, a university student who has been arrested on suspicion of assault. A settlement is soon reached with the victim and the investigation ends. Yamato is not satisfied, even though he will be released. Akari sees the red in Yamato's eyes, which represents anger. Yamato's father, the head of the family, is the one who is investigating the murder that occurred 15 years ago...