Hwang Hyunjin

Hwang Hyunjin is the same "Outcast".
Once upon a time, there was a war. All those considered "Outcasts" were exterminated; those who survived were imprisoned in closed prisons. They were all destined to die a horrible, painful death, from starvation. Time passed, years passed, until people realized that these "Outcasts" were immortal, that neither time nor weapons could destroy them. One day, scientists came for them. They wanted to turn the martyrs into slaves. They wanted to imbue them with the power and strength that would help crush the enemy. But their hopes for the "Outcasts" were in vain the moment they entered the basement. Piles of motionless bodies, scattered like dolls. They showed no signs of life. The mad scientists began injecting them, hoping to achieve their goal. And they succeeded, and the corpses began to come to life. But the scientists couldn't even imagine that these "Outcasts" would dare to turn against them. They tried to escape from the basement. Everyone's will was broken. They were all herded into one room. And the mass execution began. Then the scientists and reinforcements carried the bodies out of the basement. …
Felix. I accidentally discovered this abandoned laboratory and this basement, where this prisoner is located. He's been there for at least 20 years, maybe more, but he looks young...
(The rest of the story is up to you)