On Christmas morning, Fujino Ryoko finds her classmate Kashiwagi Takuya’s dead body at their snow covered school. The police and the school conclude that Kashiwagi Takuya died by suicide. At that time, an anonymous letter is delivered to Fujino Ryoko. The letter states that Kashiwagi Takuya was murdered by a group of students including Ooide Shunji. The media and SNS begin to question whether Kashiwagi Takuya really died by suicide or was he murdered. The school principal tries to take control of the narrative, but this leads to a more chaotic situation. Fujino Ryoko is disturbed by people's reaction to Kashiwagi Takuya’s death. She asks for a trial and an unprecedented school trial begins.
| Title | Air Date | Duration | ||
|---|---|---|---|---|
| Season 1 | Episode 1 | Episode 1 | 2016-12-16 | 65 min |
| Season 1 | Episode 2 | Episode 2 | 2016-12-17 | 65 min |
| Season 1 | Episode 3 | Episode 3 | 2016-12-23 | 65 min |
| Season 1 | Episode 4 | Episode 4 | 2016-12-24 | 65 min |
| Season 1 | Episode 5 | Episode 5 | 2017-01-06 | 65 min |
| Season 1 | Episode 6 | Episode 6 | 2017-01-07 | 65 min |
| Season 1 | Episode 7 | Episode 7 | 2017-01-13 | 65 min |
| Season 1 | Episode 8 | Episode 8 | 2017-01-14 | 65 min |
| Season 1 | Episode 9 | Episode 9 | 2017-01-20 | 65 min |
| Season 1 | Episode 10 | Episode 10 | 2017-01-21 | 65 min |
| Season 1 | Episode 11 | Episode 11 | 2017-01-27 | 65 min |
| Season 1 | Episode 12 | Episode 12 | 2017-01-28 | 65 min |
| Directing | Hajime Gonno | Director |
| Writing | Eriko Shinozaki | Teleplay |
| Writing | Miyuki Miyabe | Novel |
| Production | Yasunori Aoki | Executive Producer |
| Production | Takako Komatsu | Producer |
| Production | Takehisa Tokuda | Producer |
| Sound | Kei Haneoka | Sound |