Perfect Moon: The Red Demon Trilogy #1

Sean Jameson isn’t like other werewolves. An attack left his parents dead, and him turned prematurely. Now he lives on his own, abandoned by his family. Until one day, he risks his life to save an innocent man from death. He starts a war with his family, drawing in the other packs. With a few of his friends, he takes on his uncle only to discover the twisted truth involving his parents murder.