Bone in the Sage

This world is made up of an assortment of anthropomorphic animals. Some of them can use magic, most often they develop these powers at a young age. Few develop these powers and even if they do society does what they can to tuck them away and often even people in the same household won't know if one of them have powers unless by accident or something of the sort. However, some powers are too much for some and end up was what many called "corruption". A process that causes the soul of the body to be encased by a veil of sorts that ends up causing corruption. Once activated the person's soul a never return to its original form and some part of it will always be attached to the veil. Serving as a reminder to all.