2017.In the basement of a certain mansion, 13 skeletal corpses were found.
The body should be that of a child, and there are distinctive hexagonal mysterious signs painted on the walls.Detective Saiki Hitoshi and others decided to confirm the identity of the body and track down the whereabouts of the owner of the mansion, Haikawa Shisan.
At this time, Kanon Hasui, who called Haikawa “father”, appeared.Kanon, who has neither a blood relationship nor a household registration relationship with Haikawa, saved herself as an abandoned baby and lived together as a “real family” until 6 years ago.Furthermore, it is said that there are 19 children living in the mansion.
After listening to Kanon's words, the police department's Gomi and Inspector Suzuki believed that the 13 corpses were likely to be one of the 19 children.However, Huayin said that her father was not the murderer——.
Time flies by and it’s 2024.On a busy street where young people gather, a girl is missing.Reporter Touko Mori, who was looking for the girl, came to Saeki, who was no longer a detective, and told him.
“Is that thing really over?”