"Magical Girls aren't the only kind of magic in our world. There are magicians, who use formulas and things to harness raw magical force, and artifact users, who get specific powersets from specific magical objects. The Gem Guardians, of whom the Golden Diamond General is the strongest, are a quartet of artifact users who are the lieutenant of a magician who calls himself the Obsidian Magus, which just goes to show it's not just magical girls who are over-the-top about these kinds of things. I'm not sure what it is he's trying to accomplish, exactly, but I think it involves a lot of really unethical magic science." She sighs. "The Black Opal Guardian--wasn't there willingly."