Newlywed Yuto and Sae, just when you'd think they were enjoying a happy newlywed life, it turns out husband Yuto has become unable to get an erection. The cause was his sexual preference for big breasts and harems, and upon learning this, his wife Sae, after much deliberation, decided to ask her friend Emi for cooperation. Yuto hesitated at the 3P play approved by his wife, but in front of Emi, who possesses big breasts comparable to Sae's, his sexual preference for big breasts and harems explodes...!?