Mushiki Kuga has slowly gotten used to his double life as the powerful mage Saika Kuozaki. However, both identities are chosen to represent Void's Garden in the upcoming interschool exhibition match against Shadow Tower. To make matters worse, Clara Tokishima --a popular live streamer on MagiTube and representative for Shadow Tower-- challenges Saika to a duel for the position of Mushiki's girlfriend! Now he has to fight to win, well, himself and figure out how to prevent their secret from being exposed during the match. Meanwhile, an annihilation factor that Saika sealed many years back is starting to awaken...