Attempting to hold the trio together, Hermione grabs Ron just before he Apparates, accidentally abandoning Harry on the Horcrux hunt. Four years later, Harry is a changed man.
When Harry returns home to Privet Drive after the fiasco at the Department of Mysteries, he finds that Voldemort's possession released the Horcrux inside of him. In addition to the companionship of "Tom", Harry has his knowledge, and must learn to use it
AU Sixteen years to the day after her first born son was murdered, Professor Lily Potter must deal with the arrival of six unknown people. Post OotP.
Harry Potter loves, and is loved by, his parents, his godfather, and his brother. He isn't mistreated, abused, or neglected. So why is he a Dark Wizard? NonBWL!Harry. Not your typical Harry's brother is the Boy Who Lived story. Harry/Calypso Rosier.
Harry Potter has been banged up for ten years in the hellhole brig of Azkaban for a crime he didn't commit, and his traitorous brother, the not-really-boy-who-lived, has royally messed things up. After meeting Fate and Death, Harry is given a second chance to squash Voldemort, dodge a thousand years in prison, and snatch everything his hated brother holds dear. H/Hr/LL/DG/GW.