Released:

Overview:
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.

Director:
Kim Yoo-jin

Runtime:
NaNh NaNmin

Genre:
Drama, Mystery

• Cast:
• 
  Shin Ye-eun
  as
  Ok Chan-mi
• 
  Lomon
  as
  Ji Soo-heon
• 
  Seo Ji-hoon
  as
  Seok Jae-beom
• 
  Chae Sang-woo
  as
  Ki Oh-seong
• 
  Lee Soo-min
  as
  Gook Ji-hyun