IML-006 My sister-in-law's first affair Today, I'm going to sleep with my brother's wife. Sasaki Aki

Aki, who lives a smooth life with her husband working at a trading company. Her husband's older brother is significantly older and suffers from severe alcohol dependence; he has been disowned by their parents and recently left an institution. The husband received a call from an unknown number... His just-released brother wants to stay for two or three days. Because the brother's responses were like those of his kind older brother from the past, she agreed to let him stay...