Sankarea: Undying Love

Synopsis

Furuya's not interested in the living, he's got zombies on the brain! When Furuya's cat dies, he decides he's going to try and bring it back to life. In the process, he stumbles across a girl who is involved in an accident and turns into a real zombie! What's Furuya going to do now that the thing he loves the most is right in front of his eyes?

(Source: FUNimation)