Despite their disappointing performance at the Kanto Region Traditional Japanese Music Festival, the members of Tokise High School's Koto Club refuse to be disheartened. Led by Chika Kudou, Satowa Houzuki, Takezou Kurata, Hiro Kurusu, Kouta Mizuhara, Saneyasu Adachi, and Michitaka Sakai, they decide to hone their skills and strive for excellence in the upcoming national qualifiers. With the guidance of their advisor Suzuka Takinami, the group delves into the fundamentals of music, aiming to enhance their koto-playing abilities through regular practice and performances. However, as they prepare for the nationals, various challenges emerge, including fierce competition from renowned schools and internal conflicts like budding romances and impending graduations. These hurdles test the resilience and unity of the Koto Club, shaping their journey towards success.