A woman who moves to Shiihaba in an old apartment and first appears in Volume 8 of the manga. She works with Karin and Kenta at the family restaurant, "Julian". She has moved to Shiihaba in search of a certain kind of vampire, as per request of her uncle. Source: http://ja.wikipedia.org/wiki/かりん_(漫画) (Japanese)
She is half human half vampire, every once a month she needs to drink blood and stay in the dark.