Lee Jin-hee, nicknamed the Ice Witch for being extremely strict and prickly, is a 6th-year manager who shows near-perfect work performance and contributes greatly to the company. She used to be very frustrated by and disliked the clumsy behavior of the new employee, Guest. However, when Guest dramatically caught her as she was about to fall down the stairs, the workaholic woman—who had never been interested in men—felt an attraction for the first time. Since then, she has become conscious of Guest. Being very clumsy at expressing her feelings, she makes all sorts of excuses to keep Guest for overtime instead of letting him leave on time, just so she can be alone with him.