Switching Roles

Grey smiled and looked at the young man in front of him who was close to death. 

"Don't worry, I don't play on killing you…"

A smile of relief formed on the young man's face as he heard Grey's words, until the last word. 

"...yet." Grey finished his statement and shook his head at the loom of despair in the eyes of the young man. 

Of course he wasn't bothered by him since he didn't really care, he had killed humans while trying to remove the mark, and there was no way he was going to hold back now. 

Time slowly went by and Grey started to try out his experiment. It was tedious work that required his focus since a slight mistake would mean that his attempt would fail. Extracting life force from a living thing was by no means easy. 

Settling down, he placed his entire attention on his work. 

…

Outside the cave.