To celebrate his last days of freedom before beginning a tutoring job, Issei
takes a trip to Bali. There he meets a young woman named Chisato, with whom he
has a one night stand. Upon coming home to begin his new job, Issei finds that
his student is none other than Chisato’s son! Chisato is a married woman, but
she makes Issei a deal: She and two other married friends will share Issei. He
gets to have the time of his life, and they get to find physical satisfaction
outside of their dull marriages. Thus, the Secret Wives’ Club is born.

Secret Wives’ Club plays as an interactive novel of sorts. While there is
little story to speak of, you choose which woman you will have your next “sex
lesson” with, and what the lesson type will be. The game features several
different endings depending on the pacing of your “instruction” and which
woman you concentrate on.