"Nope. My choice, pup?" Sirius asked. "I'd go with the fourth girl. Lauren Grant, she was sitting her OWLs the year we graduated. Lily tutored her in history of magic, Moony helped her in runes but she was gifted in DADA." Sirius snorted. "Just like you are."

"She's going to be your wife, Siri." Harry laughed and Lauren's name and her family details joined Marius' on the tapestry.

"Alright. How do we do a simulation?"

"I think I-" Harry paused as Dobby reappeared. "Hey, Dobby. How did you go? Any trouble?"

"Dobby had no trouble, Harry Pott-" The elf cut himself off and bashfully smiled at Harry. "Dobby got Harry's gold and Harry's dogfather's gold. The goblins took no notice." Dobby said.

"Great. Do you need a rest? Or can you keep working?" Harry knelt down to look the elf in the eye. "I need you, Dobby, but I need you to be able to do things, if you need a rest first, tell me. Okay?"

"Dobby will. Dobby is good to work." The elf assured him.

"Alright, but you tell me if you need a break or something to eat. Okay?"

"Yes, Harry." The elf nodded.

"Okay. Can you look through those tents and trunks and see if you can find a floo-fireplace that's in working order?" Harry asked.

"Dobby can." The elf said and diving into the nearest trunk enthusiastically.

"I do like that elf, kiddo. Please tell me we're going to keep him?" Sirius laughed.

"I'm thinking about it." Harry grinned back. "I owe him so much. He saved us, he died for us."

"Not this time." Sirius smiled, then froze and frowned. "What are we going to do about Voldemort?"

"I'm going to have the Room destroy his horcruxes, before we do the conversion and then we only have the one in my scar to worry about." Harry answered. "No anchors to hold his wraith, bye-bye Voldy." He smirked.

Sirius blinked in surprise. "O-kay… Whatever you say." He shook his head. "Back to the simulations. You started to say something?"

"Yeah. I think I might have a way to show what we'll look like."

"Yeah…?"

"Yeah. Gimme a chance, okay?" Harry took a deep breath. "I want an image of Sirius Orion Black as he stands right now." A new window appeared and it quickly filled with a lifelike image of Sirius in his raggedy robes. "Alter the image to show what he would look like if he were to undergo blood conversions to be the son of Patrick Matthew Grimmley and Sarah Anne Lewis." The image morphed from a clear image of Sirius to that of a tired man that was clearly not Sirius Black but was related to him. "Show how he would look in perfect health." The image blurred slightly as the man's face and skin become clearer, his eyes brighter and his body filled out.

"Well… How about that?" Sirius blinked. "Weren't we going to go with de-aging, too?"

"Show approximate age of thirty." Harry said and the image changed to match.

"Yeah, that's pretty good." Sirius nodded. "I like that, close but not too close. Let's keep that."

"Okay." Harry nodded. "Hold that image." Another deep breath. "Show an image of Harry James Potter." Yet another window appeared and an image of Harry filled it. "Copy this image four times and show in four separate windows."

"Pup?"

"We'll be able to see what changes work best and in what order." Harry answered Sirius' unasked question.

"Right." Sirius nodded.

Dobby emerged from the last tent. "Harry Potter? One tent has a floo-fireplace. Two trunks have fireplaces linked only to each other. One other trunk has a floo-fireplace."

"Brilliant. Can you take the tent and one of the linked trunks to Sirius, please? And set the other up, so that he can come through it?" Harry grinned.

"Dobby will." The elf snapped his fingers and the tent packed itself up, one trunk settle beside the packed tent, while the other turned on its end and opened ready for use. He picked up the packaged tent and took hold of the handle of the trunk beside it, and popped away. A bare second later, Harry saw him appear beside Sirius, he put the trunk down and threw the tent out snapping his fingers before it touched the ground. The tent unpacked and erected itself in one motion, and Dobby pointed at the trunk and it floated into the tent.

"Harry's dogfather can come in. Harry's dogfather can use the linked fireplace in the trunk to go to the other trunk, which is with Harry at Hogwarts." Dobby said.

"Excellent work, Dobby. Can you show me?" Sirius beamed at the elf.

"Dobby will. Harry's dogfather will follow Dobby."

The view in Harry's mirror changed to the interior of an empty tent then to plain creamy-white walls, which Harry guessed was the interior of one of the trunks. Then the view was distorted by swirls, followed by more creamy-white walls and lastly by a familiar stone wall.

"Sirius!" Harry cried and spun around to face his godfather. The two looked at each other for a heartbeat and then they were in each other arms. Both cried with relief, tears running down their faces.

Time passed before Harry's nose twitched. "Siri? You stink..."

"Gee, thanks, pup. Great to see you, too." Sirius replied sarcastically.

"Oh, get over it. I love you but right now, my nose doesn't want to get near you." Harry whined the second sentence.

Another heartbeat and the two were laughing.

"Oh, gods. I have missed you, Siri. No-one really gets my sense of humour. Fred and George did… kind of…" Harry held his ribs.

"Well, you are one of a kind, pup." Sirius grinned. "James was ever so glad of that, when you turned him purple on your first birthday."

"Now, see? These are the things that no-one told me. You didn't get the chance and everyone else just assumed I knew." Harry huffed.

"Well, if you can find us a pensieve in all this stuff, I have years of memories to show you." Sirius grinned.

"Dobby? Can you see if there's a pensieve in here?" Harry waved his hand a circle, pointing in a general loop around the Room.

"Dobby is not sure, but if there's a peni-sieve in here, Dobby will finds it." The elf nodded firmly and disappeared into the piles.

"I do like that elf." Sirius laughed.

"He's one of a kind, that's for sure." Harry's laugh joined him.

"We're running out of night, here, Harry. Let's get a move on." Sirius ordered.

"You got it." Harry dragged himself to his feet and over to stand in front of the windows with their images of Harry and the altered Sirius. He ignored the first image of himself and laid his hand against the second frame. "Alter the image to show what this person would look like it he took a blood conversion with the altered Sirius Black as his father and Lauren Grant as his mother." The image blurred and reformed.

"Not bad, still a bit close, but if we were to lighten your hair to be more like Lauren's?"

Harry moved to the next frame. "Copy changes from the last image." The image blurred and refocused to be the same as the second image. "Lighten the hair to match Lauren Grant's." The changes happened and Harry stepped back beside Sirius. "Well?"

"Yeah, that' much better. Now the de-aging?"

"Alter age to… nine years old." Harry touched the last image and grimaced as the image became younger.

"Yeah, that's pretty good. No-one would think he's Harry Potter." Sirius nodded.

Harry walked back to the first image of himself. "Alter this image to match the last image's changes and add a gender swap to female."

"Pup?" Sirius eyed the pretty little girl, she had wild, golden blonde hair and big green eyes, not quite the same colour as Harry's, nor the same shape, but close.

"Being a girl? How would that work?" Sirius had put the idea in Harry's head and he couldn't get it out.

"You'd take a gender swap potion. Normally, it can be reversed with an antidote or purging potion, but we're in your 'it can do anything, Room'. So…?" Sirius shrugged.

"Then what?" Harry asked.

"Then you live with it." Sirius said. "It's been done before. Not often, I'll grant, but it's happened enough that St. Mungo's and the Aurors have a routine for dealing with it."

"Uh…?"

Sirius huffed. "Sometimes I forget that you weren't raised in the wizarding world, pup. Look… Some families are patriarchal and some are matriarchal, right?" When Harry nodded, Sirius went on. "In the case of a matriarchal family that's last generation has no daughters, often a son will take a gender swap and stay as a woman long enough to get pregnant and give birth to a daughter. St. Mungo's have potions that can ensure that the baby, or babies, are girls. In patriarchal families with no sons, a girl will be given the potion and tasked with making a suitable woman pregnant. Usually, it's temporary."

"But not always?"

"Not, there have been a few over the years that decided they preferred the other gender and there was one poor guy that was attacked by a griffin, damaged the tackle so badly that he took the potion and had the goblins make it permanent." Sirius winced in memory.

"Ooh… ouch…" Harry grimaced.

"Yeah." Sirius bared his teeth in imagined pain.

"So, do you think it's been done enough that Dumbledore will think of it?" Harry asked.

"No, pup. As far as I know, there's only been… maybe half a dozen in the last century." Sirius answered.

"Okay…" Harry sighed. "Let's do this."

"Are you sure? You don't have to. You know that, right?"

"The alternative is being Dumbledore's weapon, whether I'm willing or not." Harry reminded him. "And if I'm de-aged to get rid of the horcrux, then re-aged, being a girl will seem more natural to me. Right?"

Sirius nodded. "That's about right. Apparently, it settles into your subconscious more, the longer you're that way or the younger you are when you change."

"That's as clear as mud, Siri." Harry huffed in amusement.

"If we de-age you back to twelve months old, do the conversion and the gender-swap, then re-age you to… whatever, most parts of your mind will fully accept the change with only the small possibility of any confusion. But that should fade, the longer that you're a girl." Sirius added.

"Oh." Harry nodded. "That makes more sense."

"Good. Can we get rid of the horcruxes, now? Please?"

"Sure." Harry turned to the piles of junk in the pile. "Can we have the diadem of Ravenclaw, with the horcrux made by Tom Marvolo Riddle placed on a table in front of us, please?" It took a few moments before a table slid down an aisle in the piles and came to a stop in a clearing in front of Harry and Sirius. Seconds later, a pretty tiara-like piece of jewellery floated down onto the table. "Would Hogwarts, or the Room, place a shield around the diadem, please? Thank you." Harry patted a hand on the wall of the Room in thanks, as a silvery shield formed around the diadem. "Please remove the Horcrux from the diadem and force it to dissipate." Seconds passed before a greasy cloud of smoke was ejected from the diadem's main jewel, it twisted and turned, forming a ghostly face before it began to fold in on itself. "Once the horcrux is gone and the diadem clear of any magics that Rowena Ravenclaw wouldn't approve of, the shield can be released."

"One down, pup. How many to go?"

"There was the diadem, a ring, a cup, a locket, a diary and me." Harry said, absently, not taking his attention from the diadem. "Right, time for the next one."

Twenty minutes later, Harry was frowning. "Hogwarts? Can you tell if de-aging me will remove the horcrux from my scar?" There was a quiet hum, followed by a bright ding-ding of a bell. "Am I correct in assuming that you agreed with me? One ding for yes, two for no." Ding. "Brilliant. Sirius? Ready to start?" Harry called.

"Hwa…? What…?" Sirius blinked awake, he'd been dozing on a sofa off to one side.

"The horcruxes are dealt with, all except me. We're ready to start and you're first."

Sirius dragged himself to his feet, yawning broadly as he crossed to stand beside Harry. "What time… is it?" He paused as he yawned, again.

In the air in front of them, numbers formed.

2.57am

7th June 1994.

"Great, thanks, Hogwarts." Sirius grinned at the ceiling. He was answered by a soft hum. "Okay, let's do this."

"Right." Harry nodded. "Can we have whatever potions are necessary to make Sirius Black into the son of Patrick Matthew Grimmley and Sarah Anne Lewis, aged twenty-nine? Please? Something that will register magically." A goblet of smoking liquid appeared on the table that still stood in front of Harry. "Bottoms up, Siri." Harry handed it to his godfather.

Sirius took a deep breath. "Here goes…" He lifted the goblet to his lips and began to drink. "Ooh, tasty…" He sucked down the rest of the brew and shuddered as it spread through him. "Now what?"

Words appeared in the air.

Now you lay down until the change is complete.

"Ta…" Sirius folded himself down onto the floor and shuddered again. "Okay, that feels… weird…" His head fell back as he passed out.

It will take four minutes for the potion to saturate his system and another three for the changes to be complete.

"Thank you, Hogwarts. Could you make up muggle documents for him in the name of Nigel Patrick Grimmley?"

Date of birth?

"Today's date with 1961 as the year. He'll need all the essential muggle document placed for him. We plan on using time turners to turn back to August 1990."

Birth Certificate. National Insurance Number. Bank account – any preferred bank? A Unique Taxpayer Reference number. Tax Identification Number. It is best to overcompensate than to not have sufficient documentation. Do you require accommodation?

"Plus, marriage certificates for Nigel and Lauren, too, please. And no to the accomodation, thank you all the same. As I said, we plan on using time turners to turn back to 1990 and will be staying in a holiday rental while Siri- Nigel goes to the Ministry to buy a place in Wales. If we can't get a place in Wales, we'll try for Dorset or Somerset." Harry paused as various muggle documents formed in mid-air and floated down onto the table beside him.

Will you require similar documentation?

"Probably. We'll clarify that once Siri- Nig- Paddy is awake." Dobby appeared at Harry's side, but his attention was caught by the frames containing the images of an altered Harry.

"Harry?" The elf asked. "Why does Harry have three pictures of Harry in disguise and a picture of Missy Titania?"

"Who?" Harry asked.

"Missy Titania." Dobby pointed at the first frame, the one where the gender-swapped and blood converted Harry was shown.

"Titania?" Harry blinked, then frowned. "Is her name Titania Grimmley?"

"Yes, Harry."

"How do you know her?"

"Missy Titania is a Gryffindor, she shares a dorm with Harry's Wheezy's sister, Missy Ginny." Dooby answered.

"Oh, crap." Harry muttered.