That's right. It's been this way since ancient times... before the magic was sealed, I've heard that they used to be summoned to the human world quite often. If they die here, they'll just return to the world of darkness, so it's not a problem for them. But I don't summon creatures that don't have a bond with me, usually. This one was a lucky pick.

Low-level monsters like this aren't very powerful, so it was less risky to summon it than something stronger.