Man, I wish. I blitzed through the novel last month and my first thought was 'this needs to be drawn.' The comedic timing of the heir's deliberately unhinged public acts versus his coldly rational private thoughts is pure gold for a visual medium. The contrast just writes itself in speech bubbles and thought boxes.
I check Lezhin and KakaoPage every few weeks just in case, but so far, nothing. The novel's popularity seems to be growing in translated circles, though, so maybe that will trigger an announcement. Fingers crossed for a stylish, darkly funny adaptation that doesn't shy away from the source material's nerve.