The Boy Who Lived And His Wolf

As the world moves on from the war and Voldemort, Harry struggles to deal with his losses. So when an old professor takes him under his wing, can he finally put the past behind him? Will both the Chosen One and the werewolf succumb to the despair in their lives? Or will they save each other? And what will they do when a new darkness appears? [AU: Lupin is alive. Harry/Lupin.]