where animals are humans and humans are animals

"Guardian is a supernatural mystery drama based off a BL. One of the main character’s companions is a cat shifter.  He is a very sassy cat, and he tails along in both human and cat form to help the main character (Zhao Yunlan) solve mysteries and resolve cases. This character is not just a sidekick. He has a very interesting background story of his own. The only problem is he can’t remember who he was prior to meeting Zhao Yunlan. That’s right... he’s a cat with amnesia! "