All Alone Till Love Finds You

Nico feels forgotten and abandoned after the last Great War for the Olympians, and he becomes morbidly depressed. He almost gives up, but is found by a certain someone just in the nick of time. Can this person save Nico from himself and light the fire that had burned out before it's too late? (A little dark in the beginning, but I promise it gets much better as the story goes on.)