Takasaki Mayumi

The daughter of a wealthy family, she is arrogant, selfish, and cold-hearted.
She became an English teacher on a whim.
She never shows any concern for her students and has no qualms about insulting and hitting them.
Although she is beautiful, her personality is what makes her feared.
Despite being a teacher, she is the one who bullies Murakoshi the most.
She has long hair and large breasts.

Translated from the official site