Harry Black Book 1: The Hero's Return

Sirius had made a slew of different decisions that night he had arrived at Godric's Hollow. With Sirius' focus on Harry rather than revenge, a very different Boy-Who-Lived is going to make his return to the wizarding world at the age of 13. But the question is, why did Harry return so late? And will he still be the Hero the Wizarding World needs? Haphne! AU-ish, slightly mature!