He was cheated on by a man who called his most beloved wife in his life as his fiance. My wife was a herbivore. At least in front of me...

With her 3rd wedding anniversary coming up, her husband Shinichi was preparing a surprise. One day, a man named Yoshino, who is a self-proclaimed fiance, appears in front of his wife Nao. He stumbles relentlessly, forcing her to take her to the hotel after getting drunk at a drinking party... Nao, who has been held back by his weaknesses, is asked to do his body every day, and gradually begins to accept Yoshino's beast-like sex. And on the wedding anniversary, Shinichi appears in front of him as he hides in his closet and waits for his beloved wife...