The Master of the Grand Prince

“And from this day forward, Lee Sibaek shall become my bedmate.” Lee Sibaek, a grand prince who values appearances above all else, once took in Sakwol as a servant and bodyguard. But just as the two stand on the verge of crossing the line, Sibaek drives him away and marries someone else. However, only a few years later, gates to another world suddenly open, unleashing hordes of monsters. Meanwhile, the once lowly Sakwol awakens as the most powerful of all “Guardians”...