When the eunuchs who were cleaning the emperor's private office and chimney fell out from being overworked, Yoo Yak-Woo, who was nicknamed 'Cleaning Ghost' for his love of cleaning received a heavenly position there. “No, I can't...” “Why are you always saying 'No'”? “Didn't you say with your own mouth that dirty things should be cleaned?” "Hah, Haah... Emperor...”