Affiliated to the Special Investigation Information Management Office of the 1st Investigation Section of the Metropolitan Police Department - Chiju Tobi (Takashi Sorimachi) and Fuwa Roshi (Haruo Sugino), commonly known as “Okura”, received new information.In 2013, the death of student Tadashi Michio (Sakishu Urakami) at Orange East High School was not a suicide, but a homicide caused by bullying.

After hearing the news, Yoshioka Ray (Maeda Wangshiro) revealed that he was also a graduate of Orange East High School, and Michio was his classmate.According to Yoshioka, Michio was unable to adapt to school life and always kept to himself. Therefore, he was targeted by Takahiro Oikawa (Yudai Toyoda) and Kota Iwabuchi (Ryosuke Maki) of the delinquent group, and suffered long-term bullying.Ling.

After the incident, other students led by Yoshioka revealed the fact that bullying did occur in a questionnaire survey conducted by the school.However, the Education Committee stubbornly denied the existence of bullying and concluded that % committed suicide because of worries about his future.Senju was responsible for the investigation of the incident together with the head of the First Investigation Section, Hideo Kasaki (Shunsuke Nakamura), but due to some kind of pressure, the investigation was suspended.

Qian Ju decided to investigate the case thoroughly with Yuki Renko (Shiraishi Mai) and Yoshioka.Although there was a lack of clues, Riji decoded a certain code from the data and intelligence at the time...