Yuzuru returns to Tokyo to prepare the university exam and he stays at the Brother’s house, where he meets with the Brother’s wife Tsukasa.
He is overwhelmed by Tsukasa’s beauty and he is very nervous about meeting her. Moreover, the stress accumulated from the no-fap studying doesn’t help.
One day Yuzuru bumps with Tsukasa while her clothes are soaked wet and with that magnificent sight in front of him he just can’t refrain himself from jumping at her. They both thought it was a one-time silly mishap and they attempt to let it slide. But once you open that can there’s no stopping, and they continue to mix each other in a crazy day of fucking all over the house.