Harry returns from a disastrous fifth year and, in his hurt and anger, lashes out at the wizarding world in a letter to the Daily Prophet. Can love really be the ‘power he knows not? Independent!Harry, Powerful!Harry, Manipulative!Dumbledore.
In Goblet of Fire, JKR established that it was absurdly easy to bind other witches and wizards unwillingly into binding magical contracts with a simple, school-taught ‘confundus’ charm. What if Harry took note of that and decided to do something about it?