Rewritten: The Reformed Bully

Dudley Dursley, the son of Petunia and Vernon. We all know he was a spoiled, rotten, bullying brat, but he changed into a decent person in the Deathly Hallows. But how did he change from a bully to a decent guy? From Order of the Phoenix to the end of Deathly Hallows. This is the rewritten version of the original work. Major changes have been made that'll affect the story.