A group of close friends who attend a private school all have a debilitating crush on the sunny star pupil, Sun-ah. The only member of the group who claims not to is Jin-woo, but he ends up loving her as well.
as Koo Jin-woo
as Oh Sun-ah
as Sung-bin
as Oh Dong-hyun
as Byun Tae-wan
as Byeong-ju
as Yoon Ji-soo