The story begins with the fateful encounter between April 1st Kimihiro (voiced by Jun Fukuyama) and Ichihara Yuko (voiced by Sayaka Ohara). Since meeting Yuko, April 1st has encountered all kinds of people and things, and many good and bad things have happened, and he himself has also changed a lot. However, after leaving her last wish, the store owner Yuko disappeared. So April 1st stayed in the store, waiting to meet her again one day. In the past ten years, April 1st has been guarding the store every day, and the former high school student has matured. On this day, Hyakumeki Shizuka (voiced by Kazuya Nakai), who has become a university assistant, came to the store and told April 1st about a strange thing. Because he is an expert in folklore, he was commissioned by a large family to identify the antiques left by their fathers. He found the Dakini Ten Notebook, and also found that this family was very unusual. April 1st accepted the commission through the video, so he sent Guanhu to go to that family's house with Hyakumeki to complete the task...