When Sirius Intervenes

To everyone else, Sirius Black was a criminal, mad-man and/or the right hand of Voldemort. To Harry, he was the loving parent who did whatever it took, damn the consequences. And Sirius didn't care what anyone else thought anyway. A series of Sirius helps Harry one-shots. Mostly Dark! or Insane!Sirius. Always in Progress. Adopt if you wish to for full-length stories. Just tell us.