The Margrave Was An Emperor, Margrave’s Bastard Son was The Emperor, The Margrave’s Bastard Used to be the Emperor, 변경백 서자는 황제였다 Ian, a wizard of the Variel Empire and an emperor who ascended to the throne at a young age, is imprisoned due to a rebellion led by his nephew. The wizard Naum, who comes to rescue Ian, uses forbidden space-time magic. The forbidden magic transports Emperor Ian 100 years into the past and causes him to possess Ian, the illegitimate son of a now-extinct border duke’s family from 100 years ago. Just before the illegitimate son Ian is taken hostage by the barbarians of the border region, he gets entangled in a deadly conspiracy!!!