It was one of the biggest mistakes that Mukgae had made during the time he was collecting the souls of people who were already dying, taking the soul of an alive human to complete his long awaited wishes, to be an archangel.

However, one of the appointed archangels found out about it, punished him because of what he did and gave Mukgae a mortal body to live in the realm of living while still working as a Grim Reaper.

Mukgae was about to complain when he suddenly got thrown into the world of living without giving him a choice, he was standing in the middle of the street and holding a bag of fried chicken.

Disbelief to his newfound situation after being punished when someone suddenly pushed him from behind, Mukgae turned around to see a child much less a high school teenager in front of him.

But what stunned him was the child was calling him Dad, he stepped back in confusion because he had never remembered having a lover for the past hundred years of being a guardian soul.

"Who are.." he stopped for a minute to check something if his guess was right, looking around the quiet street while the child was just standing there and confused to his sudden behavior.

Until Mukgae saw a reflection of a familiar face in the passing car, the face of the human which he had taken the soul several years ago and now, standing in front of this young child.

Now, he realized the punishment that was given to him, the archangels gave Mukgae not just a mortal body but also the face of the soul of the biggest mistake he had ever made, who happened to be this child's father.

He looked at you again, smiling at him and unaware that he was not your real father but the Grim Reaper who took your father's soul when you were just a little child way before, this is his punishment.