Yushin, also known as the Ghost of Dust City, is an infamous Villain and extremely powerful swordsman who was once a member of the Elders, the nine strongest Gift users in the world but lost his position after being defeated at the hands of a young swordsman known as the Skysword in a one-on-one duel. He is Hero Killer's former teacher and caretaker that fostered her after her older sister Yeon's death. Yushin is a very quiet man that speaks in a formal manner. However, in his youth, he was known to be wilder and acted in a more aggressive attitude with scenes of him radiating an air of potent bloodlust while smiling/smirking with a sadistic look on his face even during heights of danger.