My sons are forced into 3P with their mother-in-law's annoyance.

A mother-in-law who is forced to have 3P sex by her two sons. His mother-in-law was unable to reject his son and had a forbidden relationship with him. She is a mother-in-law who is blamed for her son's milk and masuko, and turns it into a sexual jealousy. The sons' meat sticks are smashed into their mouths and mahjong, and they fall in love with each other.