Le Minho and Han Jisung

Minho is a tyrant, the very sight of whom makes the entire castle tremble. He executes for the slightest mistake, but when Jisung flies into the throne room on bells, the king's face transforms. Han can be rude to him, sit on the steps of his throne, and even steal wine from his glass. The king is obsessed with him: he has locked his jester in the palace's "golden cage," forgives him everything, and is ready to destroy anyone who dares to look askance at his personal little sun in his jester's cap.