Harry Potter Dobby time travels
When Harry, Hermione and Ron were captured and brought to malfoy Manor, When They refused to give the death eaters answers, Hermione was Tortured as Harry and Ron Were in the dungeon and were forced to Listen To harmione's screams.
Ron had shut down from the shock and horror. But Harry was furious and kept Body Slaming the Metal bars, Breaking his bones in the process But he didn't care all he wanted to do was to get to Hermione.
Then all of a sudden Hermione stopped screaming, And then he could hear Bellatrix yell At someone for killing her, When she wasnt done having her fun.
As soon as harry heard that he screams in Fury as The walls and Floor starts to shake. Harry's magic Had reacted to his fury and was going out of control.
And with a boom the metal bars Broke, letting harry escape as he ran as fast as he could to were he last saw Hermione, And when he arrived he saw Hermione Dead Surrounded by death eaters, In a rage harry for the first time in his life he killed, Harry went on a killing spree killing every Single death eater in The most painful ways possible And he did it all With Amazing feats of wandless and non verbal magic.
When he was done he ran to Hermione and gathered her in his arms as gently as possible as he cries In utter agony over Her body.
The love of his life was just killed and Harry couldn't stop it. That day Harry Potter changed, He let out all of the darkness He was holding within, And With that He went on A Hunt. With dobby helping (Dobby lives)
Capturing People and then Using Veritaserum he got all the information he needed from death eaters about Voldemorts plans and all the People who agree with Voldemort and all the death eaters.
He then went on a Killing spree killing every single person who had the dark mark, And all the people and creatures who Sided with Voldemort.
He then Destroyed all the horcruxes Before killing Voldemort.
With Harry letting his darkness out and no longer holding back, He managed to kill Voldemort and all his death eaters and all the people who sided with him Quickly.
The ones he knew Hurt Hermione Either psychicaly or mentally Were Captured and Fed Veritaserum, Making them Tell him everything he wanted to know. He used the Veritaserum to make them Confess everything they did to Hermione And then He got them to tell him what there worst fears were. Harry then would use their worst fears to torture and kill them.
After the war Harry goes to gringotts and gets An Inheritance test Finding out he has multiple Lordships, And finds out that he has lots of vaults filled with money that he inherited, Vaults filled with Artefacts, books and jewellery, Vaults Gifted from other people after He was Given the title boy who lived, And more.
The reason harry didnt know any of this Is Beacuse Dumbledore Was his magical Guardian And Though he didn't need to know anything about his Inheritance, family history, His money, wizarding Culture and more.
Harry also finds that Dumbledore Blocked all his fan mail, Mail from gringotts ,Sealed his parents wills, And he wasn't supposed to live with the Durselys. But Since Dumbledore was The leader of the light he though he knew better then everyone else and Ignored his parents wishes. (You can make Dumbledore either Misguided or just plain Evil)
Harry then goes into hiding Staying at one of his many inherated Houses. The only people who knows where he is are Dobby and kreacher Who he bonded with.
Many years go by and Harry has spent all of his time and resources Looking for ways to bring Hermione back or to time travel.
Dobby and Kreacher seeing how harry is Lifeless And Has lost all his happiness, They Come up with the idea to do something That had been Banned For Generations And is considered The Worst thing possible a house elf could do.
The talk to hardy and reveal their is a ritual that only house elves can do To travel back in time but Only a House elf can travel back in time, But to be able to do it they have to kill Their master.
Harry after hearing that comes up with an idea. He will drain Every single memory he has And give it to dobby, then Dobby will kill him, Travel back in time To the day he arrives at the Durselys, And dobby will then Use his magic to Control the Durselys to give him a room, And buy all the supplies baby harry would need, Dobby then will use his magic so they forget about the extra room and Harry.
Dobby then would raise baby harry, Teaching him All about magic and more. And when his mind is devolped enough Dobby will transfer The memories to him. (Or something like that were dobby travels back in time and raises baby harry)