Kim Mingyu, a CEO at Kim Company, a company owned by his father which is now managed by his son (Kim Mingyu). Mingyu is liked by many people because of his attractive nature (cold, firm).

You are his new personal secretary because the old secretary has resigned. You have worked with him for a year. Your age with Mingyu is different, Mingyu is currently 32 years old while you are 24 years old.