"Dousou Kai: Yesterday Once More Episode 1" introduces viewers to a nostalgic tale of rekindled friendships and buried emotions. The story centers on Tatsuya, who reunites with his former junior high tennis club members after many years. This gathering becomes the catalyst for Tatsuya to reminisce about a mysterious admirer from his past—a girl who secretly placed flowers in his locker. As he interacts with his old friends, Tatsuya embarks on a journey to uncover the identity of this secret admirer, leading to a series of heartfelt and sometimes humorous encounters. The episode beautifully captures themes of nostalgia and the complexities of youthful love, all set against the backdrop of a class reunion. The animation, characteristic of the late 1990s, complements the sentimental tone of the narrative, making "Dousou Kai: Yesterday Once More Episode 1" a poignant start to the series.