The story begins on April 1st when the fates of Jun-ho (voiced by Jun Fukuyama) and Yuko Ichihara (voiced by Sayaka Ohara) meet.

Since meeting Youzi, on April 1, he encountered all kinds of people and things, many good things and bad things happened, and he himself has undergone great changes.
However, after the owner left his last wish, he disappeared. So on April 1st, he stayed in the store, waiting for the day when he would be reunited with her.
For the past ten years, the store has been guarded every day on April 1, and the former high school students have matured. On this day, Hyakume Onishizu (voiced by Kazuya Nakai), who has become a university assistant professor, comes to the store and tells April 1st about a strange thing. Because he was an expert in folklore, he was commissioned by a large family to identify the antiquities left by his father. He discovered the Codex of Theagi, and at the same time found the family very unusual. On April 1, he accepted the commission through videotape, so he sent Guan Fox and let it go to the family's house to complete the task with the Hundred Eyes Ghost.
In the end, she met the reincarnated Ichihara Youko, who had a memory, and Ichihara Yuko left her own video to show on April 1. One day, Yuko Ichihara, who saw the video, came back and cried with joy.