Haru Yamato was never interested in futsal until he saw Japanese player Tokinari Tennoji compete at the U-18 World Cup. This changed his perspective and when he started at Koyo Gakuen High School, he eagerly joined the futsal club. There, he met a variety of talented players, including the captain Toi Tsukioka who was part of Tennoji's U-18 team. Despite having a strong roster, the Koyo Futsal Club still had a long way to go in order to compete with powerhouse opponents. This was especially difficult for Haru, who was a complete beginner to the sport!