Huisaengjaui Sayukbeop

"It seems I must kill you, Your Grace."
Inas has always been Duke Nigel Montestein's most faithful knight. But when Nigel is betrayed and killed by Inas, he wakes up a year before his supposed death. Nigel's quick to realize this isn't a mere case of time travel however, and the only one who has answers is the man who betrayed him!

(Source: Manta)