Hisae Yabe, a beautiful, kind, and popular teacher, was deeply admired by her students. However, behind her gentle demeanor, she suffered repeated sexual harassment from Mr. Sakamoto, the son of the school's chairman. One day, after enduring yet another harassment incident from Sakamoto, she was seen by a student named Kuroiwa. Using what he witnessed as leverage, Kuroiwa attempts molestation against her on the train ride home. Unable to resist in the crowded car, Hisae is forced to endure his advances, only for further nightmares to unfold. The next day, as she heads into the classroom, she is met with an unexpected turn of events.