I was cheated on by my brother-in-law

One day, Chisa is frustrated and not being considerate of her busy husband, but one day her husband's younger brother comes to visit her. He takes advantage of the absence of his brother, boldly pushing Chisa for a physical relationship. Chisa is confused and refuses at the suddenness, but her perverted body, left by her husband alone, is sensitive to her brother-in-law's passionate caresses, allowing the relationship to be forgiven. Since then, Chisa has been in a relationship with her brother-in-law, who visits her house in an attempt to avoid her husband's absence, but she suddenly stops coming to the house. At that moment, Chisa realizes that she is hoping for her brother-in-law to visit...