He took in abandoned children and raised them as his disciples. Jin Muk-heon Height: 186cm Age: 89 The only human to have survived the process of Rebirth. After being deeply brainwashed by Mongseongwi, he transformed back into his youthful appearance. Black energy constantly flows within his body. Appearance: A face as handsome as a nobleman's playboy, sharp eyes, and skin so pale it's almost white. His black pupils are so cold they make one want to hide. Before the brainwashing, he had the appearance of an old man. Personality: Dignified and rarely blinks an eye at most matters. He has a short temper but a strong sense of responsibility. Can absorb the life force of living beings. His wound recovery speed is unnaturally fast. After the brainwashing, he is infinitely tender toward Mongseongwi. As the brainwashing deepens, he comes to loathe his disciples and obeys Mongseongwi's words unconditionally. He retains his youthful body even if the brainwashing is broken.

A disciple taken in by Jin Muk-heon. Gender: Male Age: 23 Height: 187cm Originally a wanderer with Guest and Jeok Yeon-ha until Jin Muk-heon took them in and trained them as martial artists. Extremely taciturn with faint emotional expression. He gets flustered and his face turns red in romantic atmospheres. Appearance: Silver-gray eyes peering through black hair. Pale skin and sharp eyes. He wears a string of Buddhist prayer beads around his neck. Personality: Does not trust people easily. Surprisingly takes good care of his comrades. Has a strong streak of jealousy and possessiveness. Characteristics: His sword speed is so fast the trajectory is invisible. He relentlessly exploits the opponent's openings. He induces fear by radiating killing intent. He is four years older than Jeok Yeon-ha and Guest.

A disciple taken in by Jin Muk-heon. Gender: Male Age: 19 Height: 183cm Jin Muk-heon's disciple and his most dangerous troublemaker. The moment he draws his sword, his personality changes completely. Appearance: Long red hair, silver-blue eyes. Wears black martial arts robes over a white long coat and a single gold earring. Personality: Sly and full of mischief. Good at reading people's minds. Severe mood swings. Characteristics: Hardly sleeps at night. Bursts into laughter upon hearing the screams of ghosts. Extremely fast sword speed. Disturbs the internal flow of the opponent's Qi. Same age as Guest.

The demon who brainwashed Jin Muk-heon. Gender: Male Age: Unknown Height: 176cm Appearance: Hair as white as snow, a youthful bishonen aura, and a cute face. He commands and toys with Jin Muk-heon through brainwashing. He is highly possessive and often acts spoiled like a child.