A brave beautiful girl is in love with a perverted, devilish teacher and smiles as he orders her to do vulgar things. Their immoral love affair, where perverted acts unfold on school grounds, is their daily life. Yura, a plain and earnest student, is in a physical relationship with her teacher, Asano, that neither the teacher nor the student knows about. Asano escalates his acts day by day, forcing her into vulgar and obscene sexual acts that are so shocking they cover their eyes. This bold and filthy relationship continues to this day, with no regard for being found out by colleagues and students.