Miyu

Miyu also known as Miyu Yamano is the TV anime, is a beautiful girl who appears around 13 (in OVA) or 15 (later in the manga) years-old but is much older, since she is a vampire.

Miyu is a quiet girl and she talks seriously. She hunts shinma and send them to the darkness. Normally, she never laughs but the OVA, she laughed, frequently and frighteningly, and has a naturally beautiful smile.

In a few episodes of the TV series, she gets more feelings.

Miyu has never cried.
Miyu likes beautiful things.
She likes older men.