I've read a few chapters of the manga, and choosing to watch this show was thus a nobrainer for me. It's quite a novel idea, all in all. A novice necromancer trying to resurrect a cat... Quite a wacky story, all in all.

Like Bill said, Chihiro's personality is also well balanced to allow his morbid interests a more believable background. If he was a typical nosebleeder shounen main character with little brains, I couldn't accept him being able to resurrect anything.