The main heroine of the anime is a young and sweet girl named Eruna Ichinomiya. Anticipating a happy and carefree school life, she enrolls at Mikagura Academy, where in addition to studying one must also adhere to local rules that are quite harsh. The newly minted student Eruna did not even suspect the possible consequences of studying at this elite academy when she enrolled. Soon the heroine learns about the legislated existence of cultural clubs that operate under strict orders. In each of them, the strongest participant is chosen and subsequently becomes the official representative of the club. All this for a grand competition, whose outcome determines each student's status and position within the academy. Moreover, the main weapons in battle are unique supernatural abilities. Ichinomiya realizes too late the meaning of Mikagura Academy's despotic policy, and unknowingly becomes a participant, more precisely the official representative of one of the clubs. Now she must fight for honor and respect, as well as for the right to remain at Mikagura Academy. Will Eruna withstand the ruthless duel with fate itself, or will she refuse the trial that has fallen upon her?