The demon Kaisel, who has been feeling bored with his daily life, suddenly encounters a priest seeking him, who says something absurd: "Let's get into a relationship." Intrigued by the priest, who is unaware of sexual matters despite his strong desire to lose his virginity, Kaisel offers to teach him everything step by step... "A priest falling from grace is beneficial for me, so..." "I'll offer my body to fulfill your wish."