In "Dousou Kai Again" (also known as "Class Reunion Again") Episode 1, viewers are introduced to Tatsuya and Mizuho, former members of the Sakura Junior High School tennis club, who reunite at a New Year's Eve class gathering. Now in their twenties, Mizuho has long harbored feelings for Tatsuya. During the reunion, the group plans a ski trip to a hot spring resort owned by Mizuho's mother. However, when her mother falls ill, Mizuho faces a dilemma between caring for her mother and seizing the opportunity to express her feelings to Tatsuya. The episode delves into themes of rekindled connections and unspoken emotions, with the animation capturing the characters' internal struggles and the nostalgic atmosphere of the reunion.
