While reading Takano's scrapbooks, Rena discovers that Oyashiro is worshiped by three families. The problem is a virus caused the victims to go berserk. It was proposed that Oyashiro was actually a doctor and the curse was a virus in the village for which he quarantined the village and used the people who died by the virus to make a vaccine which was inadvertently interpreted by villagers. In addition, since the altitude and temperature are very specific for the survival of the virus, the victims start to feel homesick when they leave there. This disease caused all the murders. Rena is soon being hunted down by people who will stop at nothing to keep the information.