Here we go

Name: Serenity
Age: 73
Gender: Female
Vampire: Yes
When you were turned: 12
Appearance: [img=http://otakunosaigo.files.wordpress.com/2011/10/oshino-shinobu-of-bakemonogatari1.jpg]
Height: 130 mm
Clothes: simple white dress
Weapons: none
Power: unknown
Hair: as in the picture
Eyes: as in the picture
Bio:
This suspicious man had saved me from the other human. Why did he do that? Some moments ago, he and his team slayed all the other vampires without hesitation. Why were we attacked by a group of human? We didn't done anything to them. Or, did we? They did a bloodshed. But I am still alive. Thanks to that man, who killed his own companions. And saved me. He took me with him. He carried me a long time, because of my injuries. He always told me things like “Sorry”, “I will save you” and “Don't die”. While he was carrying me and was speaking to me the whole time, I hadn't spoke a single word. Why did he saved me … ?

I hadn't spoke for days. But he waited patiently. He patched me up. Why did he do that? After a few days, I asked him why he had saved me? “Because this was the right decision”. That was his answer.
I just nodded, but actually I didn't understand what his answer was supposed to mean. But I was fine with that.

Since that time, we always stick together. I know I should probably hate him. But I don't. In fact, I am glad that he looks after me. I don't hate him for killing vampires even. 

He look after me. Something the vampires never did.

Personality:

quietly, don't speak much to strangers, almost never sleeps, hate cigarettes

Of course she need blood to live, but she like sweet food much more.
She always try to hide Raphael's cigarettes.

Hope this CS is alright as well.