Hiromi Shiota

Hiromi Shiota is the mother of Nagisa Shiota.

Appearance
She has been described as "pretty, but strict looking." She has short hair that is dark in color, and said to have a face that looks similar to Nagisa's.

Personality
In the beginning, Hiromi is portrayed as antagonistic to Nagisa, being extremely controlling of Nagisa's life. She forces him to keep his hair long, and makes him wear female outfits despite his dislike of it. When defied by others, she bursts into loud fits of rage, like when she yelled angrily at Koro-sensei. Later though, she becomes more lenient with Nagisa especially when her son saved her life from an assassin hiding to attack Koro-sensei. Since then, the two appear to be on better terms.

History
Not much is known about Hiromi's past however she has revealed that her parents forced her to study often and she was never able to dress herself up. At some point, she met and married an unnamed man and she became pregnant with their child. Due to her own "controlled" childhood, Hiromi wished for a girl so that she could live the life she had wanted through her. However, she had a son, Nagisa, instead. Despite having a boy, Hiromi still tried to live the life she wanted through him. Her methods included keeping Nagisa's hair long and occasionally forcing him to crossdress. According to Nagisa, it was Hiromi's controlling and semi-psychotic temper that drove his father away.

Nagisa Shiota
Nagisa is Hiromi's son and only child. She originally wanted a girl and continually told him that. At first, their relationship seems to be that of a prisoner and a warden with Hiromi ordering Nagisa to be quiet and him silently obliging. Hiromi has been shown to verbally (possibly even mentally and physically) abuse Nagisa, screaming at him when he tried to defy her and harshly yanking out his pigtails. However, ever since he saved her from an assassin going after Koro-sensei, Hiromi seems to have changed her ways and has begun building a good relationship with her son.

Nagisa's Father
Although the two haven't been shown interacting with each other, it is known that he feels guilty for "walking out" on his wife and son. According to Nagisa, it was Hiromi's controlling nature that drove him away. It is unknown if they are divorced or just separated but it can be assumed that they are no longer married.