The creature I made up is called a Soul Borrower, i always like the idea that people could live on, and that a part of them is left behind. That a soul is unique and perhaps someone could survive from it. I could tell you the specifics but it's easier to learn my ideas as the story advances. I hop to actually write this in 2 parts. Part 1 being Samuel and Luna's journal entries and that it swaps between the two. And the Part 2 is about the journal of a different character who will meet Luna. But don't want to revel too much. I wrote an list of people the vampires or 'Originals' are married to but i will explain who the Originals are later on but just for reference because it may be of a little bit of confusion but it is not vital for the story,