Blood Moon Howl

The story unfolds in an ancient continent ruled by werewolves. The heroine, Elara, is the daughter of the leader of the Silverwind Clan, but she is deemed a "useless" member due to her inability to transform into a wolf. After the secret of her transformation into the Moon Goddess is revealed, she is forced into a political marriage with Alpha Kael of the Shadow Wolves, and steps into the hostile Shadow Castle.