Since it's a "you" point of view, Rebecca Li should be addressed as "you" and since you have a list of characters, you can try putting something like

Rebecca Li (You)

or something like that.

I don't mind characters charts, just as long as no unnecessary things are added. (plus I use em' too, haha) 

Possibly switch the characters list with the intro.

Appearance: 5/5

It's all according to theme, so well done.

Plot: 11/15

It's an interesting plot, but in chapter 2, Tao and Sebastian are talking about some past, I'm guessing is about Tao and Rebecca? I get that you're trying to create suspense and a little foreshadow, but explain a little of what happened. It confuses the reader.

Originality: 14/15

Vampires, but you added demons, so it's not too cliche, I guess. I hope this isn't going to become a love triangle... (judging by your poster)

Grammar/Spelling: 18/20

There's one thing I tell everyone I review; 

read over your work~! It's one of the things that bother readers most.

Characterization:7/10

When you introduced the other members, give more of a description. How do you see the character? Use lots of juicy adjectives.

Flow:  9/10

The flow's a little rigid. Transitions help tremendously.

Overall Enjoyment: 9/10

Un-regarding other stuff, they plot was played out quite well and I love the story istelf so far so, good job! :)

Total: 85/100