Geomjega Namgungsegareul Seuneun Beop
검제가 남궁세가를 세우는 법
Nam Yeongsin, known as the Sword Emperor, gave up everything he had as the cost of bringing down the Sun-Moon Demonic Cult. At the very brink of death, however, he is given a second chance at life, awakening into a new existence under the name Namgung Jun. Haunted by what he has lost, he turns over the question of whether regret is all that remains at the tip of his blade.