Kore wa Zombie Desu ka Season 2 [TV]

In the story, a normal high school boy named Ayumu Aikawa gets killed during a spate of mysterious serial killings. However, Ayumu is resurrected as a zombie by a necromancer girl named “Y?” (Eucliwood Hellscythe), who Ayumu had just met before dying. Ayumu then accidentally deprives the magical girl Haruna of her powers, so she demands that Ayumu take her place in fighting her enemy Megalo.