i'll fuck you up with my son, so let me have sex with your son.

Bieirei and Miku are friends with their sons, so they can talk to each other about public affairs, worries, and even their sons. One day, when we have a conversation with each other as usual, the topic becomes a topic of sex. At that time, Miku was surprised to hear that he had sex with his own son from the beauty of life. Miku, who is not a partner of his husband and dissatisfied with his desire, asks for advice in Jubirai. After hearing the consultation, Juchorei accepts Miku's proposal saying that it looks interesting even though he is surprised. A few days later, Miku's parents and children went to the house of Yumirei and there they were two mother-in-law friends.