Synopsis

Detective Saeki Jin, who works at the Toyama North Police Station in Yamanashi, rushes to a mansion after receiving a report and discovers the skeletal remains of 13 children along with a mysterious symbol. The suspect is Haikawa Juuzou, the owner of the mansion, whose whereabouts are currently unknown. Amidst all this, a mysterious woman named Hasumi Kanon, who reveres Haikawa as her “father,” appears. As Saeki and Kanon investigate the case together, the true perpetrator gradually comes to light.
Seven years later, in Tokyo, a young girl goes missing, and the mysterious symbol left at the Haikawa mansion reappears once again…