Disclaimer: Not mine, JKR's. Although I'm sure you realized this, I'm not sure I'd be writing this if I had kids, a seventh book to write and a mountain of money to spend. I'd be skydiving, as I'm not presently, this can't be mine, its JKR's
Harry sucked in a whistling breath through his teeth, "Yeah, I'm ready. I guess it's time for a blast from the past," Lily snorted, and Harry moaned, I can't believe I just said something that corny.
Professor McGonagall gently put the child down on the carpeted floor. Albus conjured some pillows for the inanimate child. Lily kneeled down and laid his head on the cushions. Little Harry came over to his mum, "Up," he demanded. Lily pulled Little Harry onto his lap. Big Harry felt a twinge of longing, but he knew that soon he would have two real parents to take care of him too.
"Professor, would you mind watching Little Harry for a bit while we put Big Harry into his new body?"
"Of course Lily," Minnie said while picking up Little Harry, who whined a bit about leaving his mum until the Professor transfigured a random quill into a teddy bear for him, "I'd be glad to. You can find us in my room when you're done here."
"Thanks, Professor," Lily said while kissing her little boy on the forehead before he was taken out.
"Now, Lily, watch this, swish, flick, swish zigzag, poke. Now couple it with the incantation, Corpus Mobilius Dos, yes, that's perfect. I'll leave you two to it," Albus instructed then got up and left.
Lily cast the spell and Harry felt white hot needles pass through him. Time began to rewind backwards, all three Potters taking the place of Harry during different instances in his life.
He woke up in the hospital, Lily draped across him, Harry defeated Tom in James' body, he woke up in Godric's Hollow, Lily draped across him…again. Then he was back in his other life, defeating Voldemort for the second time. It sped up from then onward, searching and destroying the Horcruxes. It slowed down form a moment
He chased Ginny, who did look a lot like Lily, out of the fancy restaurant. "I didn't mean for him to die, I did everything I could to keep him alive, I tried!" he shouted after her. She turned around, whether it was tears or rain running down her face he couldn't tell, but had a hunch that it was more the first than the second.
"What do you want, Potter? Wasn't killing my brother enough for you?"
"I didn't kill him, I tried to save him I just couldn't, I'm sorry."
"Stop it, stop lying! If he hadn't been friends with you he wouldn't be dead, you bastard!" She struggled with a gold band with a large diamond placed atop; she got it off and threw it into a vat of mud at his feet. He dropped to his knees and groped for it. By the time he had picked it p Ginny was gone. He tried to rub the mud off the ring but had trouble as he himself was coated in it. He began to cry. A reporter came out from the restaurant from where he must have been doing an article on his anniversary and began clicking pictures, a quick notes quill began to write furiously despite the onslaught of rain. The memories sped up again.
It slowed down again when Harry was trapped in Voldemort's lair; he was chained to a wall. He screamed himself horse as he tortured Ron and Hermione. He yelled at Tom to stop, screaming until his throat began to bleed. Finally Tom ordered a death eater to deliver the final stroke. The man in the white mask sliced their arms, legs and chests. The slowly bleed to death, curling into each others arms with their last bit of strength before they died. The scenes sped up once more.
They slowed down at fall, outside of Hogwarts; Hagrid's hut was on fire. Harry, Ron Hermione and Ginny ran out to the collapsing building. Outside of the small hut Hagrid lay bleeding from the many wounds it took to take him down. Harry kept running as the others stopped, collapsed at his feet and cried. Ginny came over to him and began to rub his shoulders, "It's not fair, he didn't deserve this."
"I know, Har, I know," Ginny began to cry too and Harry pulled her into his lap and cradled her to his chest. Time sped up again.
It slowed down again at Harry's first time with Ginny. Harry blushed as he realized his parents were watching this and subconsciously closed his eyes as he and Ginny finished up and collapsed asleep, in each others arms, within the memory. It sped up once more…
...only to slow down when he asked Ginny out once more during the summer. He had a romantic picnic with candles planned. He asked her, she pretended to think about it and then they kissed. Harry smiled that smile he got only occasionally where it split his face in half and showed every single tooth he had in his mouth.
It sped up and slowed down again, this time when it stopped it was another sad memory, Albus' funeral. Next was Black falling the veil. Afterwards it was Cedric dying and Voldemort being resurrected. Then it was him finding out the truth and Peter getting away. Following that was the death of the basilisk, and the ridicule he faced when they found out he was a parselmouth Next it was meeting Tom for the first time since he was one. The mountain troll and when he first met Ron, his first friend. It sped up again after that.
They saw all the ridicule he faced at the Dursleys. The mother's day card that he gave Aunt Petunia who burned it. The kids who he met who were then beaten up by Dudley for hanging out with him. The cupboard he lived in for ten years of his life. The beatings he received when he did something wrong. Then it went back to that night, when everything went to hell. It slowed down to molasses then, and they heard James go off to head off Tom, and Lily plead for Harry's life. They all saw the flash of green light. Then Harry woke up, he felt the pillows beneath his head, and began to cry.
Lily cuddled the three year old who was really a seventeen year old to her chest. James, fully awake now, came behind him and rubbed his back. So this is what it feels like to be loved by your parents, he thought, as he cuddled in closer. Lily began to sing a lullaby and he fell asleep in his mother's arms.