Ruler: Master of the Mask (The Emperor: Owner of the Mask / Goonjoo Gamyunui Jooin / 군주: 가면의 주인)

[DramaFever and VIU Versions] Perfectly synced for all versions (bigger and smaller) of episode 21. Enjoy:):):) {Not mine I've just uploaded It and synchronized it to fit all of the versions}