Yu Dayun

Yu Dayun is the younger sister of Yu Ijin. Dayun is small, brown-haired girl in her teens who is considered to be one of the prettiest girls in the school and she was popular in her younger years due to her intellect and looks. She is seen to have shoulder-length hair with full bangs, her eyes are dark and are also considered big—Dayun has a slim figure and an average bust size.