IS THIS A ZOMBIE GN VOL 2,3,4 Manga (3 Books) 
Manufacturer: Yen Press
Author: Shinichi Kimura
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?