Enoshima Prism
Enoshima Prism is a 2013 Japanese film directed by Yasuhiro Yoshida. It stars Sota Fukushi, Shūhei Nomura, and Tsubasa Honda.
The story follows Shuta Jogasaki, who has been friends with Saku Kijima and Michiru Ando since childhood. When Michiru plans to study in England, she writes a sealed letter to Saku and asks Shuta to deliver it. On the way, Saku lends Shuta his bike, but Saku dies while rushing to the station to see Michiru off. Shuta feels responsible and drifts away from Michiru.
Two years later, at Saku’s death anniversary, Shuta finds Saku’s mysterious “You're a Time Traveler” watch. He uses it and somehow travels back to December 20, 2010. He helps Michiru and others install prisms in the school lab windows to create a rainbow effect. A basketball teammate accidentally hits him, and he wakes up back in 2012. He notices small changes in the future and runs into Kyoko, a girl who died long ago but can be seen by time travelers as a “time prisoner.”
Kyoko warns that time is a natural law and warns against big changes, but she teaches Shuta a way to act with minimal differences. He tries to get Michiru to reveal her England plans, but she resists. As Shuta keeps looping between 2010, 2012, and 2012 again, he learns that Michiru loves him, not Saku. He then sacrifices himself to save Saku, and Kyoko gives him the watch to return to December 21, 2010.
Back in 2010, the Shuta who returns hasn’t yet learned what will happen. In 2012, the other Shuta learns the truth about Michiru’s feelings and saves Saku, but everyone’s memories of Shuta—except Kyoko’s—are erased. Kyoko vows not to forget him. Years later, Shuta is seen on a beach with a prism; Saku and Michiru pass by as strangers. He gives Michiru the prism, and they part ways.
This page was last edited on 2 February 2026, at 23:32 (CET).