Originally twin brothers, they both have eyes that can distinguish between demons and humans. One went to serve as deputy minister of the Human Rehabilitation Agency, and the other became a slave but continued to fight for the liberation of mankind. Haven't seen each other in 20 years.
Muzi was sent to the Demon City to find another person with eyes that could distinguish between demons and humans. He found it after a lot of hardships, but before the search, he made up his mind to kill the person as soon as he saw him. After all, he was able to gain a foothold in the Rehabilitation Agency because of his unique eyes in the world. When he saw the person and realized that the person was his own brother, it was too late. But Muzi didn't feel sad at all. All he thought about was his own future.
What exactly is selfishness? Is it like Muzi, who rescues humans on the surface but kills his own brothers secretly for himself? Or is he like No. 92, A human slave who just wants to survive, sacrificing the lives of his comrades at the critical moment?
Conception: