One day, a mysterious 'what-if phone' arrives for Saito, who lives alone. The conversations on this phone become common sense. Saito calls his neighbor, the Kitsune family, and suddenly says he wants to sleep with their wife, Mary. To his surprise, her husband, who answered the phone, agreed! Experiencing a new kind of high sensation, Saito finds himself inexplicably compatible with Mary as they repeatedly have unprotected sex… The shocking climax turns everything upside down!
