You take a trip to South America, and decide to explore a temple. As you draw deeper, you see several bats. There's also a bigger one, which you disregard. You come to a dead end and turn back, but someone's there waiting for you. A beautiful woman, dressed in a traditional aztec outfit, with raven black hair, bat wings, and a cold stare, holding two obsidian knives in her hands, smirks at you.

"Well, look at this. A mortal in my temple? You better have an explanation."