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-ah
Ryu Da-in
Kang Na-eon
Jeong Ha-dam
Ha Yul-Ri
Hwang Hyun-jung
Shin Seul-ki
Lee Ju-yeon
Oh Se-eun
Song Si-an
Son Ji-young
Kim Se-hee
Choi Yoon-seo
Lee Da-kyung
Kwon Yi-soo
Kim Ye-na
Lee Gyu-seon
Kim Ji-an
Kwon Tae-hee
Yoon Na-eun
Do Ji-woo
Jo Woo-mi
Baek Seo-ha
Jeong Ji-soo
Joo Bo-young
Son Ji-na
Ahn So-yo
Jeon Sa-ra
Kim Bi-bi
Cho Yu-jin
Lee Si-young
Baek Cho-a
Choi Seong-won
Jeon Jun-woo
Cho Dong-in
Choi Dae-chul
Nam Gi-ae
Kim Young-pil
Jung Ae-yeun
Seo Kyung-hwa
Lee Chae-been
Kim So-woon
Jung Seung-kil
Jeong Gi-seop
Song A-kyung