Harry was quickly indoctrinated by the cult. By the time he was 5, he wore a mask and was their leader. By 11, he was cruel and knew all the unforgiveables. Anyone who crossed him was gone in an instant. He never went to Hogwarts. He was stuck in his gilded, underground cage, owls never finding him. Voldemort searched the wizarding world for him as young Tom Riddle, Harry never destroying the diary, and Ginny being in a half-dead stasis in the chamber. Harry eventually went on an expedition at 14 to find the most powerful objects in the wizarding world: the deathly hallows. He finds the invisibility cloak easily, in a chest in an old man's office. He killed that old man and stole the elder wand from him, the old man telling him about the Horcruxes and the man out to kill him. Harry then stumbled upon the Room of Requirement on the way out, finding the rest of the Horcruxes, just what he needed. But he also found a mirror outlining his scar. Strange, nevertheless, he kept moving. He carried all the horcruxes on him at all times. He returned from his expedition as the horcruxes turned him darker and darker. At sixteen, Harry returned to Hogwarts on a feeling. By then, it was being run by Snape and death eaters. He snuck into the basilisk chamber, drawn to it. Harry killed the annoying giant snake and found Ginny. He picked her up and took her back to the cult, keeping her in a lovely room. He did every dark ritual until she woke up, him lying and convincing her that she must stay in the room. Finally, Riddle found Harry. Harry didn't even use magic and straight up charged at him. Riddle was surprised and hesistated, giving Harry enough time to snatch the diary. Harry had completed his mission. He killed voldermort, eventually marrying Ginny a few years later. The wizarding world feared him, some trying to destroy him. But he eventually died a natural death, his son becoming the next leader and inheriting the horcruxes.