Kōyō Ozaki

Appearance
Ozaki appears as a tall and slender woman with pink collected hair with hairpins and violet eyes. She dons what seems to be a traditional Kimono tied in a bow, covered under a light-purple mantle.

Personality
Ozaki comes as a mature, serious, emotional and cruel woman.

At first it looks as if she were only obsessed with Kyouka, going to such lengths of attacking Atsushi and claiming to kill him and any other who dares to 'show her the light', only for Kyouka to be by her side once again: and even torturing her psychologically to ensure this. Despide of that, she has shown to genuinely care about her being - Going as far as to plead Ogai on sparing her, showing no resentment after being deceived and attacked by her, and asking Atsushi about her welfare after being beaten by The Guild.

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.

Background
Nothing is clear about her backstory. It seems as if she was some kind of escapee together with an unknown boy who affectionaly called her, 'Kou'.

Trivia

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