I read this manga a while ago. All the characters were half-human, half-animal. The main character was half-human, half-crow, his main weapon was this hatchet-like thing attached to a chain that he would throw.
One of the secondary characters was a half-human, half-fish that was always trying to get the character to shut up and also super grumpy.
A second side character was a half-human, half-bear that was introduced when he killed someone because he couldn’t control his animal side.
A third side character that was introduced pretty late was a half-human, half-bat kid whose mom was killed by her dad and she lived because she was hiding in the forest.