@Miserys_End he did mentioned that he only partly believe it and think that there are more people involve honestly will you easily believe two people took out an entire army usually you would think of it as an exaggeration or false information.
@JavelinJoe aren't adventurers technically mercenaries already they do body guard work they do collecting and disposal of bandits for money so yeah their already mercenaries.
@Kuraiaku Well this is kinda different seems they are already establish even before he joined the other story your referring to is the MC is what making the party actually work.
Honestly I kinda like Lucifer sure he trick Adam and Eve to eat the forbidden fruit but in doing so he gave the humans knowledge remind me of that Greek god who gave humans fire and was punish.