Season 1

After the execution of alleged killer Shiori Okuma, three university friends are suddenly transported seven years into the past—right before the serial teacher murders began—where they encounter Shiori as a fugitive cla…

Kotaro, Hayato, and Rin are transported seven years into the past, where they encounter Shiori—a woman who, in their original timeline, was executed for a series of teacher murders—now a fugitive suspected of the first …

Kotaro, Hayato, and Rin, transported seven years into the past, try to prevent the serial teacher murders using knowledge from their own time, but a third killing occurs, with Miyaji—previously seen acting suspiciously—…

As evidence places Shiori near the scene of the third murder, Rin becomes convinced she is the culprit, but Kotaro and Hayato hold off on reporting her and instead investigate the victim Miyaji’s movements, discovering …

After uncovering Shimoyama as the true culprit behind the serial teacher murders and confirming Shiori’s innocence, Kotaro and his friends return to their own time to find that history has changed—Shiori is no longer on…

After realizing that their actions in the past have altered the present, Kotaro and his friends decide to return to 2019 once more to uncover the truth behind the case that ended with Shimoyama’s arrest and to save Dete…

Kotaro and his friends reveal to Detective Ito that they have traveled from 2026 and join forces with him to search for Shiori. When a new sighting of Shiori is reported, Ito finally catches up to her, but she escapes a…

After preventing the fourth murder in the Teacher Serial Murder Case and saving both Samejima and Rin’s friend Marimo, Kotaro spots the fleeing culprit and gives chase in his van. However, he is suddenly engulfed in a m…

After learning that Hayato and Rin are in mortal danger in 2019, Kotaro discovers how to time-slip once again and returns to the past, rescuing them from a villa engulfed in flames. During the incident, he witnesses Shi…

Shiori reveals to Kotaro that ten years earlier, Nagine committed a murder to protect her, and that she took the blame for the crime herself. Yet despite insisting on her innocence in the recent killings, Shiori suddenl…