Is This a Zombie?

Ayumu was murdered by a serial killer and resurrected as a zombie by a cute little Necromancer. Then he got mixed up with a magical girl and a vampire ninja! With a harem like this, Ayumu could end up even deader before figuring out who killed him!

Ayumu Aikawa must continue to fight the Megalo in place of Haruna, who continues to recharge her magical powers. While trying to figure out the mysteries behind the people who are releasing these Megalo in the world, Ayumu meets a beautiful, black-haired girl by chance, and she only has eyes... for his butt.