A legendary class of repeaters, where middle-aged students older than the teachers have repeatedly failed grade after grade. The school that is dealing with these students asks Yumi, a female teacher, to "somehow save this class." She gently teaches, sometimes scolds, and provides sexual guidance that soothes their stiff minds and crotches with titjobs and blowjobs. Although she has trouble dealing with these unconventional students, Yumi's passionate teaching approach gradually loosens their hearts. However, her assistant teacher, Yano, does not seem to like her style of teaching, which deviates from traditional teaching...