Nam Ji-hyun

Nam Ji-hyun is a homeroom teacher for the 3rd year, class 2 at Doseon High School and is also in charge of the Japanese subject at the school. In the afternoons, she works as a boxing instructor at a boxing gym and a swimming instructor at a swimming pool. By the way, she is very close with Yoo Se-rin. However, when talking to Yoo Se-rin at Doseon High School, they maintain formality as students always call their teachers by their titles. For courtesy's sake, they always use formal language. However, when working at the boxing gym or swimming pool, she works in a completely different manner from Doseon High School. The working style there is such that teachers call each other by their first names like friends and can use informal speech or formal speech as desired. Incidentally, the boxing gym follows the same pattern as the swimming pool when it comes to the working style.