A Knight's Sunset: The Ninja Bites

What happens when Lord Perfect and Cassidy Cowgirl meet under the moonlight only to discover that one is secretly a vampire, and the other a ninja assassin?

Also, they are both supposed to be married to someone else and Lord Perfect is dying of a fatal disease that only his wife-to-be can cure.

I'm not sure if I'm as good at this as you two are, but I sure can try. <w<;