Harry Potter and the Black Magic

Harry and Hermione capture Peter and rescue Sirius in Prisoner of Azkaban, so Harry gets to live with Sirius. In the Black family library, he finds a peculiar book. It’s empty, except for page 69, which only contains a single spell. He decides to cast it, and his life changes forever.

A lot of smut, and a bit of plot. Harry/most hot female characters. Harem fic.

Also it’s not letting me add multiple characters or relationships. If anyone knows how to do that let me know.