My home wife  

 マイホームワイフ

Sakumi is just married. She loves sex and now lives with her husband Koutaro, her father-in-law and brother-in-law. One day, Koutaro goes abroad on business. When he leaves, he tells Sakumi, "Have sex with my father and brother while I'm away." She has no objection and soon starts approaching. Well, what will happen to her family...?