The chapters of the manga series Chibi Vampire were written and illustrated Yuna Kagesaki. The series premiered in Japan as Karin in Monthly Dragon Age in 2003 where it ran till its conclusion in 2008. The 58 individual chapters were collected and published in fourteen tankōbon by Kadokawa Shoten between October 2003 and April 2008. The chapters follow the growing romance between Karin, a mixed-up vampire who gives blood instead of taking it, and Kenta, a classmate who learns her secret and becomes her daytime help.