This quote comes from a TV series ‘Squid Game’. The scene where this moment comes from is in Season 2 Episode 7, with the title of ‘Friend or Foe’ (2×07). In Korean the episode is called ‘친구와 적’ (Transliteration: ‘Chinguwa Jeok’).

The series Squid Game is produced by Siren Pictures Inc. (& Netflix)

Image quote based on this scene:

"Player 456. Did you have fun playing the hero? Look closely at the consequences of your little hero game." - The Front Man (Ep. 2x07)
Netflix