Riho has been married for many years, but recently her husband no longer cares about her, gradually seeing each other as air. Yuji is a class B officer, a smiling, very interesting student, and always helps Riho with a lot of things. Riho also gradually develops feelings for Yuji, but since she learns that Yuji has a girlfriend, she decides to seduce him. In front of Riho's beautiful body, she is allowed to fuck naked and cum straight into her pussy, making Yuji quickly fall in love with her teacher. But after a while, the girlfriend also realized the shady relationship between the two, Yuji also didn't want to continue cheating on his girlfriend, so he made the decision to end the wrong relationship with the teacher...