It's funny how MC and the adventurer manage to have completely different understanding of what the MC says.
@Riger - I suspect the MC isn't as stupid as he looks. He just lied about his village. And possibly he was the one who gave everybody in his village a magic bag, because he can make them.
Same reason for him getting surprised at seeing a guild master.
Or maybe he was surprised that something as small as a demon would get attention from a guild master.
@screamdoom - it gets worse. Org did in fact hunt an evil boar. So when they ask him about evil boar, he'll tell that he indeed killed one. And the author will make them misunderstand that he hunted that bunch of fabulous evil boars that MC has killed.