What Kind of Empress Is This¿Que Tipo De Emperatriz Es Esta?; Что это за императрица?; 이계 무슨 황비

A customer service worker Jin Ye-Rom has encountered a very troublesome customer, causing her number one employee status to disappear. Wanting her status back, she decides to find that customer and personally apologize to him, but, suddenly, she finds herself in a strange place. The next thing she knows, she's become the Empress, and that troublesome customer turns out to be none other than the Emperor himself!