Harry Sirius Potter and The Half-Blood Prince

Sequel to HSP and the Order of Phoenix: Just as Harry gets use to life as a vampire and living away from his brothers in his sister's vampire clan, he heads back to Hogwarts, with Snape more nasty than he's ever been, Dumbledore showing him Voldemort's memories, Teddy now nervous around him, and a big battle on the horizon, Harry's only comfort comes from the arms of his girlfriend