A project to help couples who are suffering from a sexless marriage has started! The Takahashi couple have been together since their school days and have naturally become sexless! The plan is to use the client's husband and wife's best friend as a prankster to show the husband and best friend having sex to the wife and stir up jealousy! The Kawasaki couple are married to a couple with a large age gap and the husband is suffering from erectile dysfunction.

So they invite a junior from the husband's company to their house and leave him alone with the wife! In a good mood, he cuckolds the frustrated wife, and the husband watches the whole thing and induces a depressed erection! ? The Sato couple are the clients! The busty wife seduces the husband with the help of a friend's couple! The husband is supposed to have sex with the horny husband, but the wife also gets a good feeling with the friend's husband, and it develops into an unexpected swapping sex! ?