Virtual Reality and the debut of Circlet Technology has reshaped society. A fresh competitive digital sport named Circlet Bout surfaces, prompting schools to clash in order to crown the premier Circlet Bout Club and athlete. One day, Yuuka Sasaki is mistaken for an opponent and confronts Chikage Fujimura, Japan's top player; the fierce duel ends in a draw despite Yuuka"s lack of experience. These moments spark her enthusiasm for the game, prompting her to pursue a career as a Circlet Bout competitor. Two years later, Yuuka relocates to Tokyo and enrolls at Union School, where she hopes to train and fulfill her ambition of rematching Chikage. Upon arriving, she learns the club has shut down; consequently, her initial mission becomes assisting athletic Miyuki Kasahara and manager Ayumu Aizawa to revive Union's Circlet Bout Club and restore its former prestige.
