Kisaragi Toko is a detective in Investigation 1 Section 11 of the Tokyo Metropolitan Police Department. Her senior, Detective Hideaki Takano, has decided to move to the Public Security Bureau. Hideaki Takano’s transfer will be carried out in 1 week. During this time, a murder takes place. A wealthy man is found dead in his home. His throat has been cut, and a blue flower has been placed within the wound. Also, the victim's wife, Mayumi, is missing.
A newspaper then receives an email from Kurasuta 16, professing themselves as the murderer. The email also implies Mayumi's location. Since Detective Hideaki Takano is soon to transfer to the Public Security Bureau, Toko Kisaragi feels more pressure and responsibility to solve the crime.
(Source: AsianWiki)
~~ Adapted from the novel "Chou no Rikigaku: Keishicho Satsujin Bunsekihan" by Asami Kazushi.
