Call her 'bluff'; how dangerous can she be?

"A deal with you? In your dreams."

"Oh?" She raises a brow at you. Apparently she didn't expect that sort of response form you.

"I know how you demons work. You lure humans in with their greed and manipulate them into causing their own misery. If you want to wreck havoc on this kingdom, I want no part of it." And in all honesty, you don't feel intimidated by her in the least. She looks like a skinnier and more feminine version of you. Granted, a rather attractive and big-breasted version of you, but that doesn't exactly make her intimidating. "But! Don't assume I'm going in this blind. I want to know what this bet is about first."

She sighs. "Pity. I so would have enjoyed having an ally after centuries of being stuck in that mirror, but it seems that you want to do this the hard way.

"The bet is simple: you and I will compete to see how many people we can fuck by the seventh day."

You blink. "Uh, come again?"

"You heard me."

Shit. This was outside of your expectations, though in hindsight you should have seen something like this coming since she admitted to being known as a succubus. This doesn't seem like a good bet to take. Again, this demon is an attractive female version of you. Even if you were both equally attractive, she had the advantage. You can think of many girls that would rather slap you if you tried to bring them into the bedroom, but you doubt that nearly as many guys will reject the advances of the demon in front of you.