In the home of Nonomiya Kyoko (Matsui Rena), Kamao Michiru (Uchida Rio) once lived a wonderful cohabitation life with her, but her relationship with Kyoko gradually intensified, and the opposition became particularly obvious.
At the same time, Kyoko's younger brother Hiroki (Kentaro Maeda), who was depressed by his family and was depressed all day long, was moved by Michiru's words and strongly realized that his real enemy was someone in his family.
So, one day, the rampaging Hiroki's madness and sense of justice pointed at that “someone”...
On the other hand, detective Aso (Shunsuke Daito)'s persistent search is gradually bearing fruit, and he is getting closer and closer to Michiru...