Incest with a lustful and sexy sister-in-law

Sakai is living happily with her husband. One day, her brother-in-law asked to come stay at home for a few meals. He is a socialite and looks quite masculine. The wife found that he suited her taste, so when her husband went to work, she stayed home and dressed in sexy clothes to seduce him. And then her purpose was fulfilled. They had incestuous sex with each other, the husband taking the initiative.