Revenge of Others

A boy falls to his death at school, but Ok Chan-mi does not believe that her twin brother, Park Won-seok, committed suicide. Chan-mi transfers to her brother's school, Yongtan High, and meets Ji Soo-heon, who witnessed her brother's death. A "hero," who avenges bullied students, appears at Yongtan High. Chan-mi speculates that it may be connected to her brother and starts looking for this hero.

• 
  Shin Ye-eun

  Ok Chan-mi
• 
  Lomon

  Ji Soo-heon
• 
  Seo Ji-hoon

  Seok Jae-beom
• 
  Chae Sang-woo

  Ki Oh-seong
• 
  Lee Soo-min

  Gook Ji-hyun
• 
  Chung Su-bin

  Tae So-yeon
• 
  Kim Joo-ryoung

  Jin So-jeong
• 
  Wooyeon

  Hong Ah-jung
• 
  Jin Ho-eun

  Sa Joong-kyung
• 
  Yeon Oh

  Lim Seung-woo