Nitta Haruko

Mikan Yuuki's homeroom teacher in her elementary school. She is shown to be an otaku and big fan of Saibai Yuuki's work.

Appearance
Haruka has brown hair and red eyes and wears a pair of glasses.

Personality
The most known aspect of her personality is that she's a huge fan of manga, specifically the work of Saibai Yuuki, who happens to be the father of Mikan Yuuki, whom she considers to be her top student in her class.

Trivia
She made an appearance in Mayoi Neko Overrun! chapter 4 when the Stray Cats Association Club were looking for the owner of a lost cat (which was her).