Beautiful wife of the wife

It is "good" who is a field supervisor in a small construction company in Tokyo. She married a senior woman, Mizuki, who worked in the same workplace a year ago. It is never wealthy but is sending an unhappy and happy daily. However, "Mizuki" doesn't like sex very much, and because of lack of life in the night, "good" participates in the meeting of "wife of the wife" in the invitation of a man called "Nakata" who met in a certain site. There was a transformation circle where members were able to join their wife. One day, 'Ryo' is forced from 'Nakata.' "My wife and yacht!" And