Soredemo Tsuma wo Aishiteru 2  

Teacher Marika leaves her husband, Yuutou, for work and ends up having sex with one of her students, Yuuki. Despite being shaken, she reports the incident to school authorities who call upon Torao, the superintendent, to investigate. The next day, Torao confronts Marika about the affair and uses a photo of them kissing as leverage. He forces her to spend the entire day with him, abusing her body. Meanwhile, Yuuki is worried sick about his wife's sudden disappearance and goes to check on her. To his horror, he finds them in bed together. As for Marika's husband, Yuutou, he begins to suspect foul play and invites a colleague over to investigate the matter further.