Ijincheon, also known as the Sword Hunter, is the Executioner of the Silver Forest of the Four Swordsmen and a former disciple of the first late Executioner, as his youngest pupil. He was once known by the nickname of "The Incompetent One" due to his nonexistent abilities with the sword and being the weakest one of the Executioner's students, but he never once gave up on his dream of becoming a strong swordsman.

Spoiler

Ijincheon was revealed to be the father of Hero Killer and her late older sister, Yeon. But he was forced to abandon his daughters after deciding to choose their mother over them.