Kōyō Ozaki

Ability
Kouyou has the ability to control Golden Demon, a sword-wielding phantom. It is the same type of ability as Izumi Kyouka's, but she is able to control it with her own will.

Trivia

 * In reality, Ozaki Kouyou was the mentor of Kyouka Izumi, with the latter viewing Kouyou as a teacher even outside of literature.