Taking Over

Sirius Black is tired of being forced to live in the hovel his mother's portrait calls a home, of Molly Weasley getting on his nerves, of everyone trying to control him. So when Harry reminds him that he's an adult capable of making his own decisions and unwittingly offers him a way out...Well, what can he do but take it? Rewrite, takes place in OOTP. NOT bashing. NOT HP/HG.