Paranoia. He'll make an average demon king. But if he has the power to marry her away, he either has enough power over her to force her to not take the throne, or she can go against him and it doesn't matter anyway, other than just pissing her off.
"I swear if she is another wife—"
Most wives aren't because of him, but because of people like the king pushing them onto him. Also, not yet.
First he's saying he'll go there with Liz and Set, then the king is concerned he'll go alone, and Liz offers to go with him. That doesn't make sense.
Pretty demon maid. Demons also have class.
Demons thinking they're as powerful as an MC. Well, couldn't be any other way.
He really likes to praise Cain to the ceiling, break it, and raise him to the skies. Cain doesn't like it quite as much.
How come Cain didn't expect to have to show his power to a people who only believes in strength? Is he that dense? I thought that kind of denseness was mostly aimed at girls.