Harry Potter and the Time Complex

After the war has been won, Harry cannot take the amount of guilt he feels he should have, and hides away, only to discover something that could take him to the past, and is whisked away onto an uncertain path! AU! Time-Travel! Post-DH! Rated T to be safe! W.I.P.! DISCLAIMER! I DO NOT OWN HARRY POTTER OR ANYTHING RELATED, AND IS RESPECTIVELY OWNED BY J.K. ROWLING!