Pending Train: 8:23, Ashita Kimi to

As people who wish to move from Car No. 6 to Car No. 5, where the security situation has deteriorated, begin to appear, Yuto (Eiji Akaso) and his friends find a logbook that describes the circumstances of the catastrophe that drastically changed the Earth in 2026, and Kayoko ( Yasuko Matsuyuki and others have been wondering if there is a hint to return to the original era in the mysterious glowing stone brought back. Just then, Rena (Kotone Furukawa) and Akashi (Akito Miyazaki) find a riverside spot with warm water. However, this is a place where Car No. 6 claims territory and the members of Car No. 5 are not allowed to enter. Yuto and Sae (Moka Kamishiraishi) then head to Car 6 to negotiate, but Naoya (Yamada Yuki), who knows Sae's feelings for Yuto, interrupts them and offers to be the negotiator. Furthermore, Naoya, who does not believe that he can return to his previous era, says that he will move to car No. 6...