[DeepL Translation - needs review] This is the story of how we became the best in the world. Nagi Asagiri, a junior high school student, is a gifted tennis player. Using her agile legs, she is steadily winning national doubles tournaments. However, she is not very good at socializing with others. Nagi's partner is Isamu Koyama, who can get along with anyone. He is cheerful and friendly, and although his personality is opposite to Nagi's, they make a great team. She made a promise with Isamu ...
