So you meant that the dude is an ordinary human with witch acquaintances? Because that's what the witch owner meant. There's nothing special about him except for coincidentally being cousins with a bunch of witches.

You wrote "the dude wasn't an ordinary human after all," as if you thought he had magic powers or something. I thought you were kidding, so I tried to confirm, then you said, "The witches told him he's no ordinary human. It even shocked him a little."

It's a bit hard to interpret those lines as "he is a perfectly ordinary human with witch relatives."