Is This a Zombie?

Kore wa Zombie Desu ka? (これはゾンビですか? Kore wa Zonbi Desu ka?, lit. Is this a Zombie?) is a Japanese light novel series by Shinichi Kimura, with illustrations by Kobuichi and Muririn. The series' title is officially abbreviated as Korezom (これゾン, Korezon). As of January 2011, seven volumes have been published by Fujimi Shobo under their Fujimi Fantasia Bunko label. There are currently three different manga adaptations based on the universe of Kore wa Zombie Desu ka? being serialized. An anime adaptation produced by Studio Deen aired in Japan between January 11, 2011 and March 31, 2011.

Story
Ayumu Aikawa is a zombie resurrected by a necromancer named Eucliwood Hellscythe after being killed by a serial killer. As he tries to make the best of his undead life, he encounters a Masō-Shōjo named Haruna and inadvertently takes her magic powers, being forced to become a Masō-Shōjo in the process. With Eucliwood, Haruna, and a vampire ninja named Seraphim living with him, Ayumu helps battle demons known as Megalos while trying to figure out the mystery behind his own death.