Oh Sehun finally realises the fact that nobody can escape from the manipulation of the devil even if he had once cheated time itself and that was by… becoming the Devil’s Henchman. He questioned if it was worth selling his own soul in exchange for the eternity in the very beginning.  He thought it was a rare blessing; one that anyone would have wished for and yet, now he knew – he was wrong. Living was human, but living forever was a curse. And he was stuck with the curse. After all,