Min Jieun is a minor Character. She was a classmate of Oh Sangwoo, but she was relatively quickly killed off.
Min Jieun had a slim figure, presumably similar to that of Yoon Bum, long dark hair with a large forehead and a mole beneath her eye. She has caught the eye of men on the street at her first appearance, so it is safe to assume that she is an attractive person. Also worth noting - when performing, and afterwards, she has a pink drawn heart on her cheekbone.