The Legend of Mor'du (2012)

An eccentric witch from the 2012 Brave film tells the untold story of how a benevolent king gave his four sons equal leadership of the kingdom. The eldest son, however, felt betrayed by his three brother's decision to rule the kingdom together since the king has passed away from old age. The eldest son turned to the witch to grant him his wish in order to outmatch his three brothers, he immediately decided his fate by turning himself into a bear instead of mending his bond with his brothers. As a result, the unnamed kingdom fell and it was soon forgotten. Since then, the eldest son remained trapped inside a black bear and he begins to roam around the forest until the curse can be broken.—dawsonpersi