Ichijou Masaki is a student of Third High School and the scion of the Ichijou family from the Ten Master Clans. He is first introduced as one of the lead representatives of their school in the Newcomers' Division in Nine Schools Competition. Even before meeting face-to-face, Masaki and Kichijouji already harbored a bit of rivalry against Tatsuya who served as a technician during the competition. On the other hand, Masaki likes the latter's sister, Miyuki.