Is This a Zombie?, Vol. 1 (Kore wa Zombie Desu-ka?)

Life - or undeath? - isn't easy for Ayumu Aikawa. A seemingly normal high schooler, he is in fact a zombie who serves as a bodyguard to an introverted necromancer. But his already complicated existence becomes even more outlandish when he accidently steals the powers of a magical girl, transforming into one himself - complete with frilly dress and pink chainsaw!! How's a reanimated corpse supposed to keep his head on his shoulders with roommates like these girls around the house?