Harry Potter - J. K. Rowling
Dont Forget the Dog
by flitterflutterfly
When Dumbledore's plans for the Dursleys go awry, he is forced to give young Harry to Kingsley Shacklebolt to raise. Little did he know how this change would mess up everything. (Or, Dumbledore is a manipulative bastard, Kingsley is an awesome parent, and Sirius just wants a happy family.)