Is this a Zombie?

What is Is this a Zombie??

Aikawa Ayumu's ordinary life ends when a serial killer claims his life, only for him to be resurrected as a zombie by the necromancer Eucliwood Hellscythe. Thrust into supernatural conflict, Ayumu becomes entangled with a mahou shoujo named Haruna and must battle the mysterious anti-mahou shoujo system known as Megalo, blending action, comedy, and the unexpected.

Aikawa Ayumu is a normal high school boy. One day he is killed by a serial killer and revived as a zombie by a necromancer named Eucliwood Hellscythe. He starts to serve Eu as her guard but he happens to deprive the mahou shoujo Haruna of her magic power. Haruna orders Ayumu to fight against the anti-mahou shoujo system "Megalo" in her place.