Nitta Haruko

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

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

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

Plot
Haurko serves as a teacher to Sainan First Elementary School. She made a visit to the Yūki household to meet Mikan and her father, who is an manga artist, Yūki Saibai, which he was replaced by his son, Yūki Rito due to his work schedule. Lala decided for Rito to pretend to be his father and began asking how Mikan's school performance is. Later, she asked Rito to sign her manga but her shirt was signed instead, much to the embarrassment to Mikan. After Lala gave Rito the herbal drink to calm him down due to the alcoholic effect on humans, Rito accidentally ripped down Haruko’s shirt and began to cry, angering Mikan who’s pants was pulled down.

The following day, Haruko held a meeting about the incident but will continue to be a fan of Saibai’s work.

Etymology

 * Nitta means "fresh, new" (新) (ni) and "field, rice paddy" (田) (ta).
 * Haruko means "clear weather" (晴) (haru) and "child" (子) (ko).

Trivia

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