Every last Thursday of the month at an all-girls high school, the students of Class 2–5 cast their votes in a popularity poll. The results classify them into Grades A, B, C, D, and F. If they fall into Grade F, they become legitimate victims of school violence.
Bona
Jang Da-a
Ryu Da-in
Kang Na-eon
Jeong Ha-dam
Ha Yul-Ri
Hwang Hyun-jung
Shin Seul-ki
Lee Ju-yeon
Oh Se-eun
Ahn So-yo
Son Ji-na