Miharu Nijino

Miharu Nijino (虹野 美晴) is the adviser of Kaoruko Moeta, Ruki Irokawa and Tsubasa Katsuki who used to work as a mangaka back in high school, but she eventually gave up her mangaka career to be a teacher.

Appearance
Miharu has bra-length light-brown hair that is styled in a crown braid in the back with bangs swept to the right side, green eyes and she tends to look like a teenager (as Ririka Hanazono and Mayu Amisawa once said) whenever she has no makeup on.

She is always seen in her uniform, but she changes in various outfits outside the school.

Personality
When Miharu first met the girls, she was a strict and aggressive teacher towards the girls (including Koyume Koizuka which ended up in a different class) who often scolded them for being late in class. However, she has a hidden personality unknown among the students. In reality, she was a super fan of Wing V and her works. She secretly buys her mangas and wishes to meet her personally. Little does she know that her idol is one of her students and later changed her approach towards her mangaka students, especially Tsubasa Katsuki.

Tsubasa Katsuki
Who is also known as "Wing V", was her long time mangaka idol. She treats her specially in class after knowing that she is the mangaka whom she loved the whole time.

Ririka Hanazono & Mayu Amisawa
Her long time best friends way back in high school who used to be a mangaka themselves, but they eventually gave up on their hopes of becoming one. Although, they were reunited uncoincidentally through the girls.

Etymology

 * The name Miharu means "beautiful" (美) (mi) and "clear weather" (晴) (haru).
 * Miharu's surname Nijino means "rainbow" (虹) (niji) and "field, wilderness" (野) (no).