Misuzu Hinaki

Misuzu is a 23-year-old teacher of English and is liked by her students. She is in a new relationship with Kazuki, the principal. After Misuzu finds out that one of her students, Masahiro, is Kazuki's younger brother, Masahiro suddenly assaults her, steals the ring Kazuki had gifted her, and blackmails her into a sexual relationship under the guise of "tutoring".