Moguro meets company worker Yanai Samushi who is unhappy at home with his wife and son and he suggests that Yanai change families. Initially Yanai refuses, but after another fight at home, he agrees. Yanai finds himself outside another house with his name, and is welcomed home by a woman and daughter he met previously at a blood bank. Yanai's wife and son begin to miss him, so Moguro takes them to his other home where they find him being sucked dry by a vampire mother and daughter.
