My wife's mother

With the marriage of her daughter Maki, mother Ai has now come to an end to raising her child. Just as I was about to enjoy my life, I was asked to discuss arbitration of my relationship with my husband and wife. Hearing Maki's story doesn't get the point, and ends up asking his son-in-law, Shinichi... It is said that Shinichi was in love with his stepmother, Ai. Shinichi can't resist his overflowing feelings and pushes him down, but Ai holds it back. However, after touching the man's skin for the first time in a while, Ai's hands unconsciously moved to her crotch...