Responses
Just want to say, mangas are Japanese. When talking about Korean comics, use webtoon or manhwa.
Dimensional Mercenary
I'm pretty sure it's this one
I am looking for a manga I read before. It was a coloured Korean manga where the MC(male) needs money and is given money by some organisation to enact or go into some people's stories/memories and has to complete scenarios/objectives and he cant die since he will die in the real world also. MC first goes into the memories of a blondish knight. He and his friends are chasing after the Kings son to kill him. Blondish knight doesnt let his friends die, finds Kings son doesnt kill him but takes his ring to prove to the King that the Knight killed the Kings son.