Hikari, a young student, aspires to excel in rhythmic gymnastics inspired by her idol, Diliana Gueorguiva. With determination and the support of Takaaki Oiishi, her school's top male gymnast, she joins the rhythmic gymnastics team. As her feelings for Oiishi deepen, she finds herself in a love triangle with Bazuki Shiina, a talented rival vying for Oiishi's affections. Amidst friendships and rivalries, Hikari also grapples with her emotions for Mao Natsukawa, a childhood friend and musician who harbors long-standing feelings for her. Caught between her passion for gymnastics and the complexities of her heart, Hikari navigates a web of emotions and relationships that intertwine both on and off the mats.