Magic Knights are modern magic-users who fight with weapons converted from their souls. Ikki Kurogane goes to a school for these Magic Knights, but he is the "Failed Knight" or "Worst One" who is failing because he has no magical skills. However, one day, he is challenged to a duel by Stella, a foreign princess and the "Number One" student. In this duel, "the loser must be obedient for life."

Ryota Osaka, Shizuka Ishigami, Nao Toyama, Shintaro Asanuma, Yu Kobayashi, Hisako Kanemoto, Yoshitsugu Matsuoka, Mao Ichimichi, Megumi Han, Yoko Hikasa, Yoshimasa Hosoya