In the 21st century, a family of vampires settled down on the grounds of Japan and lived a modest life whilst sucking on the blood of humans discreetly. However, the eldest daughter of the family, Karin Maaka, has an embarassing secret which cannot be revealed to anyone. Even though she is a vampire, she does not lack blood like her family members. Instead, she overproduces blood to the extent that she transfuses the excess into her victims, hence increasing their blood levels. Despite her troubling body characteristic, she attends school like any other high school student, that is until a new transfer student, Kenta Usui, enters her life.

Karin is an adaptation of Chibi Vampire manga

7 Volumes
Published by Kadokawa Shoten and seralized in Comic Dragon AGE.
Licensed by Tokyopop with volume 1 realeasing 4-11-2006

Manga Description:
Karin Maaka is the middle child of a family of vampires which immigrated to Japan 200 years ago. Karin, although technically a vampire herself, is very different from the rest of her family. Instead of lacking blood, her body overproduces it. In order to get rid of the excess blood, once a month, she must give in to her urges and find someone to bite. Instead of drinking their blood, she gives them some of hers, leaving both her and her “victim” feeling refreshed and energetic. Despite these troubles, she still goes to school and holds down a part-time job. Everything is going reasonably well for Karin, until a transfer student, Kenta, joins her class. For some reason, her body instantly reacts to him, and begins producing more blood than she can stand. He eventually finds out about her body’s problem, which leads to quite a bit of difficulty. Now, yet another complication has been added to Karin’s already very complicated life.