"Humans and demons look exactly the same"
"The only difference between them is whether they can use magic or not"
"If you can use magic it means you're a demon, if you can't you're a human"
"I can't use magic..."
"... So I must be a demon who can't use magic"
????????????????????
This guy's reasonning was beyond stupid. Even if you grew up in the demon territory, the thought should have crossed your mind at least once ffs. But well, it's a ecchi so let's not think too deep and enjoy the tiddies I guess.