戸野田 真耶

The younger sister of the main character.

She has a very intense temperament and is the type of person who acts first rather than thinks. She lived in a dormitory at an all-girls school for a long time, so she has never had any experience with men. Not only sexual experience, She has not even had her first kiss yet. She has excellent grades and a strong sense of responsibility.

She is popular among the underclassmen at school. She was once a representative of the students in her dormitory, and she hates to lose.