Harry Potter and What Could Have Been

by dragolian

Sirius has a wife and daughter the same age as Harry, when he arrives at Godric's Hollow his wife stops him from going after Peter and he takes Harry. Pairings Sirius/OC Harry/OC rated M in case

4. Diagon Alley

Disclaimer: Do not own Harry Potter, all belongs to JK Rowling. The two Black girls are mine though.

AN: Ok so this will be Harry's Birthday, Diagon Alley and Train ride. As you saw in last chapter I brought Susan in as a 4th friend because I didn't want Neville ending up as a 3rd wheel during later years. Speaking of, anyone wants any specific house? For anyone worried that Harry is too dependent on Alyssa. Remember that he is only young in the fic at this point and he values her input in decision making. You'll see at Hogwarts they'll get into little spats when Harry wants to do something and she disagrees. He won't listen and she won't talk to him for awhile. I added in that dependence purely to make the story interesting later on when she doesn't get her way like shes used to. I just realized Remus didn't make an appearance last chapter. My bad might go over it later and add him in. Would only be a few lines.

AN2: In regards to Dumbledore finding out about Adriana & Alyssa last chapter I kind of left that out again since I want a shock for him during the sorting. For those wondering if Dumbledore will attempt any compulsion charms at Hogwarts. The wards prevent anyone from doing them. Otherwise you'd have Snape using it on every non Slytherin and a compulsion war between the students, prefects using them to get students to listen. Teacher's to shut students up in class.

Black Manor July 31st 1991

"This year will be the year" Sirius declared. Waking up at 5am believing his godson and daughter wouldn't start preparing their infuriating counter-pranks until at least old Marauder couldn't believe they stopped him every year with a prank of their own ever since Harry's 7th birthday. It was like they were natural Legilmens that were reading his mind. He had believed their counter-prank that year was a fluke. Oh how wrong he was, each year he got more devious, going as far as to get Remus's help like the good old days. But even with both of them working together it seemed like the kids always had a plan to counter their efforts.

The old werewolf was shocked at some of the thinks the kids used. They even had some muggle pranks used on them. Something even the Marauder's would have never considered using back in their day. The first time Remus aided Sirius 2 years ago they had somehow snuck past his wards and got itching powder throughout his clothes. Same thing happened with Sirius so when they got changed and headed to Harry's room they started to scratch themselves. It just got worse and worse and seemed to spread. Muttering counter curse out of counter curse nothing seemed to cure this devious tactic. They barged through the door begging the kids to end their torture. Said kids were rolling on the floor laughing for 20 minutes before they handed over the anti-itch powder. Sirius looked at it like the holy grail and banished his clothes and sighing in relief as the itching sensation became to fade.

The next year had them caught by assuming they would be in Harry's room again, opening his door carefully Sirius let out a small squeal as they were hit by multiple dung bombs from Alyssa's room. Sirius's hung his head and let out a sniffle while the kids once more were rolling on the floor laughing. But this year, this year Sirius would finally get his revenge, what kid wakes up at 5am. Laughing maniacally for a moment he decided the best way to do this is without caution.

Apparating straight to Harry's room, it was still dark so he muttered Lumos and then he was surprised when the whole room lit up with a strobe light. "Atomic Dog" by George Clinton was playing as he was seemingly hit by multiple water bombs from all directions and shouted out "NNOOOOO, WWHHHHHYYYYYY". Harry turned off the Music and strobe then put on the normal light. "So Uncle Sirius, given up trying to prank us yet?" he asked innocently. Padfoot just looked up and glared "Give up? GIVE UP" Padfoot got an insane glint in his eye as he stood, pointed at the two and said "Oh no pup, I'm just getting started, I hereby declare a prank war for when you come home for Christmas"

An few hours later had the kids sitting around the dining room table glaring at the kid while he took chunks out of his meal while the two kids in question just looked on innocently at him. Adriana just shook her head at the immaturity of her husband sometimes. He's such a baby when he doesn't get his way. Blinky popped in a moment later "Master Harry, Mistress Alyssa, Hogwarts letters is here" Both their eyes widened and ran over to open them up. Harry read:

HOGWARTS SCHOOL of WITCHCRAFT and WIZARDARY

Headmaster: Albus Dumbledore (Order of Merlin, First class, Grand Sorc., Chf. Warlock,

Supreme Mugwump, International Confed. of Wizards )

Dear Mr. Potter,

We are pleased to inform you that you have been accepted at Hogwarts School of Witchcraft and Wizardry. Please find enclosed a list of all necessary books and equipment. Term begins on September 1. We await your owl by no later than July 31.

Yours sincerely,

Minerva McGonagall,

Deputy Headmistress

Knowing full well that Sirius would have left it until last minute to give him the letter asked Blinky "Blinky it says the response is due today, has a response been sent already?" Blinky got wide eyes and darted them between Sirius and Harry while Adriana and Alyssa both quirked their eyebrows at Sirius so he explained "It's simple really Minnie would have seen the Address for Harry and Alyssa as she sends out the letters. But Dumbledore gets a list of all students and their address's was they are officially enrolled for emergency purposes. By leaving it until today he has no valid reason to come here in person and he has no choice but to wait until you arrive at Hogwarts kids since preparing for the school year begins from today and he will be far too busy to go Harry hunting"

Harry got a big grin at that "So basically you're just pulled a prank on the supposed greatest wizard in a century?" Sirius let loose a barking laugh "No pup, the man has been involved in my prank from the day I claimed custody of you." Alyssa had a thinking face that all 3 noticed but waited until she asked the question that was obviously going through her head "Hey Dad, I get Harry but how come you kept my letter as well?"

Sirius got a mischievous glint in his eye when asked that. "Well princess it's simple really." Letting that thought sit for a moment til you could see them getting irritated he continued "Dumbledore being so focused on the Potter's and Longbottom's at the time. Didn't realize that I got married, in fact only a few people in the order at the time were aware. And even if he did know about your mother he has no idea about you. Now a few years ago he came to me with a proposal of a marriage contract between Harry and a family that is closely aligned with him youngest daughter."

Alyssa looked to be trying to burn a whole through his head with the glare she was giving him "And" She snapped, if she found out her Father had signed a marriage contract to some little Hussy he will find out what it means to have a pissed of Veela around. Sirius knew to stop playing games when he saw the look in her eye so he got straight to the point "I laughed in his face" As 3 listening blinked. "You just laughed at him?" Alyssa stated unbelievably. Sirius just merely nodded and decided to skip over the joke with his name. He knew how much they were sick of him using it.

"Anyway, the reason I said he probably knows nothing about you is the fact he proposed a contract between a random girl and Harry in a sense. Now I have a feeling he will try and convince Harry to get to know young Ginerva Weasley or at least her family when he gets to Hogwarts to try and get Harry to ask me to write up a contract between them. Stupid idea I know but that's the way the man thinks, believes we are all just mindless pawns on his worldwide chessboard." Nodding her head keeping up with the conversation "I get all that but why keep me secret though Dad?"

Adriana starting giggling at that and the three looked at her "Well sweetie, how do you think Dumbledore will react when he sees Harry Potter's name on the list living at Black Manor but then spots an Alyssa Black starting this year too at the same Address?" Thinking about it she said "No idea, why would he do anything?" Harry answered her "If you sent your reply earlier he would have done all he could to stop you attending Hogwarts, you would become another thorn in his plans to control me. By doing responses last minute the magical contract enrolling you will be complete and only getting expelled or leaving by one's own choice can get you out of it."

Sirius grinned insanely "Exactly pup, he can't do anything now, but try and get Alyssa removed once you're there. And if he does threaten it or carry it through?" Harry glared at his godfather for the suggestion "I'd leave too" Sirius beamed surprising Harry "Exactly Pup, if he gets rid of Alyssa he gets rid of you which would take you remove you permanently from your control. We have him in check"

Smiling broadly once more Sirius continues "Now compulsion charms won't work at Hogwarts but Potions will, so we'll need a way to prevent him from doing that." Flashing his head of house ring on his finger to them he continued "This is the Head of House Black ring, all the old family rings have detection spells embedded into them that can't be removed as it has combinations of Elvan, Goblin, Faerie and Wizard magic flowing through them." Letting this sink in he continued.

"As such only one of each race working together can even break through the barrier protecting the spells let alone breaking down each individual one and the last time I checked the 4 races aren't exactly on friendly terms." He chuckled "Basically it will warn the user of any outside influence on the mind or harmful potions/poisons that may be around the area. Now it alerts you of Legilimens but it does not stop them, which is why the last 2 years we have been helping you develop an Occlumency barrier. Alyssa your Veela heritage adds an extra layer of defence as well. Only those you love can pass freely by the layer which is why you didn't detect me. Think of it like a sixth sense. Now you Harry are the last living Potter. So today when we go to the Alley I will be taking you to Gringotts to become the new Head of House Potter"

Sirius thought back to their Occulmency training and a few days ago he had tested the final result. He couldn't help but let out a laugh at seeing their defences. She had made a small garrison which a chest in the middle guarded by 2 adult Veela transformed. If the Legilimens user gets past the gate they will have to fight off hundreds of Harry's in suits of armor yelling things such as "REPEL THE INTRUDER, PROTECT THE PRINCESS" Likwise Harry's is a building similar to Black Manor and his memories are stored in a large Library. He has Alyssa as the Librarian and she has an access list of who is allowed to ask for any memories and if they aren't on the list then she lets loose a bunch of Harry's doing the same thing.

Harry grinned to himself, the only person at Hogwarts opinion he will truly count is Alyssa and he always dishes for her so he will be able to detect anything that would harm or influence her. He liked Neville and Susan too but their opinions wouldn't make him do something as stupid as get to know a family that they haven't heard of before that day. Taking Alyssa's hand subconsciously when he thought of Dumbledore trying to use her to get to him he asked "So when are we heading out than Sirius?" Sirius grinned at his godson "Soon as we send out these responses back to Minnie and we open up your presents I think Harry." Harry grinned at that as they began to hand out presents.

The only presents that really stood out was mirrors that Sirius and Adriana gave to each Harry and Alyssa. Explaining that they just call out their names and they'll be able to see and talk to either of them. They had been programmed to reach specific mirrors by calling out "Dad/Padfoot, Mum/Auntie, Moony or Love" Which caused both kids to blush and become more determined to prank him when the holidays rolled around. Sirius just grinned like Christmas came early.

Hogwarts, Headmaster's office July 31st 1991

Albus Dumbledore paced around his office furious, the last 2 months has had him eagerly awaiting the new list of students admission lists for the new years. Harry Potter was due to start Hogwarts this year and he knew that once officially admitted he would finally have the boy's address and be able to try and get a meeting with him. But every day he hoped for it had all the other useless brats admissions arriving but no Harry Potter. Who does he think he is not returning his reply straight away, he knows for a fact that Minerva sent his out among the first batch of letters.

At first he had been worried that Black had enrolled the boy at another school, but after speaking with his contacts he knew that wasn't the case at all. He wasn't stupid. The arrogant man is delaying to the last moment so he won't be able to pay the boy a visit officially since the deadline will be reached. Why should he be forced to meet the boy, the new school term is close but for a man who's been forced to wait 10 years to even start his plans it felt like an eternity. And what makes him angrier was that the boy is hardly ever in Diagon Alley anymore but when he is the contacts always mention some Brunette girl with him. Just who was this unknown girl, he would need to make sure that he isn't close with her or his plans for convincing him to chase the Weasley girl will be ruined. That Ronald boy better play up to his past in 2 months, he couldn't risk not gaining control of the situation soon.

Sitting back and sighing he checked the time and saw that it was 4.50pm, there is definitely no way for him to reach the boy until term now. All because of that arrogant boy Sirius Black who keeps getting in his way. Minerva then came in a few minutes later with a smile and another batch of official admissions. She placed them down and walked straight back out of the office. Looking down he was pleased to see that she had put Harry Potter's on top. Not bothering to check the others this time he just put them with the rest for the house elves to sort out later and read the file. Thus he missed Alyssa Black sitting right underneath.

Diagon Alley July 31st 1991

Flooing in as usual the Alley was once again packed and as usual Sirius had to yell to get people to stop approaching his Godson. Hand in hand Alyssa and Harry followed Sirius and Adriana to the Goblin bank of Gringotts. Bowing to the guards ignoring the surprised glances of the guards they entered and went to the nearest teller. "Hello there, my Godson here is the last of his family line and we wish to make him the Head of House." The Goblin looked at Sirius eyes widening slightly when he saw the young man standing next to him before going back to impassive than stated "Of course Lord Black, I'll get someone to organise Mr Potter paperwork now. Follow me" Sirius nodded and the group following the Goblin.

Arriving at an office the Goblin bowed "This is Goblin Master Ragnok's office. He carries out the older family's inheritance claims. I've already notified him of your arrival, good day." Just before he turned and walked away Harry spoke "To you as well Master Goblin" Surprising said Goblin before entering the office. The Goblin merely shook his head and went back to his counter.

"Ahhh Mr Potter, I've been expecting you. Your parents had a feeling your Godfather would bring you here at age 11 to make you the Head of House so we have all the Paperwork ready. Just sign in the spaces provided, place a drop of blood on the Head of House ring and put it on. I warn you that if you're not who you claim to be the magic in the ring will kill you and if you refuse to put it on after signing the contracts we will not allow you to leave alive. But I'm sure it won't come to that." Ragnok greeted and stated with a big toothy grin at the end. Harry gulped before doing as instructed, Alyssa still not letting go of his hand making it rather annoying signing but once he was done he pricked his finger letting with the knife Ragnok provided and let a drop of blood hit the ring.

Glowing for a second it floated up and Harry slid his right pointer through it, it shrunk to fit his finger. He felt an odd pulse of magic flow through him and he glowed for a moment before it faded. "Excellent, it's all done Lord Potter. Would you like anything else today" The Question directed at both Sirius and Harry. Harry spoke "Yes sir, does this mean I now have access to the family vaults?" Getting a nod from the Goblin Harry continued "Is it possible to join my trust vault to the Family vault and get something that will allow me to buy things without needing to come back here to get the money?"

Stroking his chin the Goblin Master responded "Yes both of those requests can be done easily" Opening his draw he pulled out a small black bag with the Gringotts insignia, muttering a few words in Gogglygook he placed it in front of Harry. "Just place a few drops of blood to the insignia, it will bind it to you so only you may access it as the Head of House. If your mind is being controlled in any way it won't open. Also if you wish anyone else to have access to the vault now you must come here and state it after we perform a check for any mind control."

Nodding his head he looked at Alyssa who shook her head and he turned back to the bag cutting his finger once more and dropping some blood on the symbol. The Bag glowed and the symbol warped into the Potter Insignia on his Ring. "Alright Lord Potter, it is done, now also note that the bag only works with wizarding money, as such you must visit your vault personally for any artefacts or relics. If you wish to also spend money in the Muggle world you can use this. Follow the same process as with the bag" Harry nodded "Please just call me Harry, Lord Potter is too formal" Ragnok smirked and smiled.

Ragnok placed a Muggle credit card in front of Harry and he once again dropped a few drops of blood on the symbol that turned into the Potter symbol. "Again Lo- I mean Harry, only you may use this and it will fail if you are being controlled. Now is that all you require today" Getting nods in response "Alright then, have a good day Harry, may your gold always flow" Harry responded in kind and they left the bank. Alyssa pulled out her Hogwarts letter and read what they needed to buy.

HOGWARTS SCHOOL of WITCHCRAFT and WIZARDRY

Uniform

First-year students will require:

1. Three sets of plain work robes (black)

2. One plain pointed hat (black) for day wear

3. One pair of protective gloves (dragon hide or similar)

4. One winter cloak (black, silver fastenings)

Please note that all pupils' clothes should carry name tags

Course books

All students should have a copy of each of the following:

The Standard Book of Spells (Grade 1) by Miranda Goshawk

A History of Magic by Bathilda Bagshot

Magical Theory by Adalbert Waffling

A Beginners' Guide to Transfiguration by Emeric Switch

One Thousand Magical Herbs and Fungi by Phyllida Spore

Magical Drafts and Potions by Arsenius Jigger

Fantastic Beasts and Where to Find Them by Newt Scamander

The Dark Forces: A Guide to Self-Protection by Quentin Trimble

Other equipment

1 wand

1 cauldron (pewter, standard size 2)

1 set glass or crystal phials

1 telescope

1 set brass scales

Students may also bring an owl OR a cat OR a toad

PARENTS ARE REMINDED THAT FIRST YEARS ARE NOT ALLOWED THEIR OWN BROOMSTICKS

"Hmmm, let's go to Madam Malkin's Harry" Harry looked at her incredulously "Alyssa we have enough robes at home to last us years, why would we want more." Pouting a bit "Cause I want some more" Harry laughed at the cute pout she always pulled when he questioned her. "Nah take a look who's in there now, obviously an arrogant Pureblood, I don't feel like dealing with him right now" Pouting once more she muttered "Fine, but you will take me clothes shopping next week" He just grinned at her "Only if you play nice Miss Black" She looked up with a cheeky grin "But I thought you liked playing rough Mr Potter"

Sirius took that time to bark out a laugh ruining their game. "So where first then wands or books Lyssa" Harry asked "Save the best for last so let's do books first" Nodding the group went to Flouish and Blotts. Collecting two sets of the books Harry snuck into the pile 'Pranks made easy, hex's all should know', 'Quidditch All you need to know since 1901', 'Advanced Occlumency – Don't just force them out, lure them in' and 'Duelling for beginners' Pleased with his choices for now he insisted to pay for Alyssa's much to Sirius's protests which fell on deaf ears. Alyssa just beamed at Harry.

Leaving the store they headed over to get some writing supplements from Scribbulous Writing Implements, Harry had to drag Alyssa away from the Quick-quote-quill she tried out that was insulting her. Leaving the store getting more than enough they entered the Apothecary. They got their Cauldron's and ingredients. "Ahhh thank god, that place reeked" Alyssa exclaimed as they left. Chuckling they headed over to the Trunk store they were approached by a middle aged man.

"Ahhh looking for school trunks are we?" The kids nodded and Harry asked "Have you got any that can only be opened by the user and or someone trustworthy?" Grinning widely the man knew he had found a group that would be willing to pay a fair penny for a trunk so explained some various types to them. "What you think Lyssa. I like the 2 compartment trunk, means all school stuff can be in one and the rest can go in the other." Standing in a thinking pose for a moment Alyssa said "But what about the 3 compartment one with the study room, then we have a quiet place to study?"

Considering the pros and cons of each Harry finally said "Alright Lyssa. We'll get the 3 compartment one cause I get feeling there will be heaps of people gawking at as in the halls and Library. But I think only one of us should get one and since I won't be able to get to the girl's dorms..." Alyssa pouted "But what if I don't want to be around anyone, even you" Harry look like he just got slapped then grinned "Then you'll be releasing a monster because I won't be able to find you." Giggling she said "Fine I'll take the 2 compartment one with blood lock protection. You can have the 3 compartment one with the same, alright?"

Nodding his head he turned to the man "Is it possible to key in the trunks to both of us?" The man nodded "Not a problem, it's a bit tricky but since you both want it to happen it shouldn't be an issue, you want be able to key anyone else in through, just a fair warning though. But if you open the trunk then they can come in while you hold it open for them. They also won't be able to leave once trapped in them without you opening it so be careful of that. Now the study room is 15x15x10m, comes with bookcase 4 double seated sofas, fridge and table. Altogether it comes to 210 galleons." Nodding his head Sirius tried to pay but Harry was already getting the coins out. Frowning at his godson he let it go then eyes widened and he ran out of the store.

Turning to see his godfather running off Harry just shrugged and followed the man's instructions to key the two kids into each trunk, then shrinking them down for them. Walking out they looked up to see Sirius grinning holding a cage with a beautiful snowy Owl in it and a carrier with a Midnight black cat. Squealing like only a 10 nearly 11 year old girl can Alyssa ran up to her father thanking him and taking the cat cage. "Thanks Uncle Sirius" Harry stated stroking the Owls feathers through the bars earning a hoot from him. Meanwhile Alyssa was cooing over the Kitten and Harry just rolled his eyes.

Deciding to finally head out to the Wand shop they headed over to Ollivanders. Walking in they got a shock when a voice spoke out "Ahhh I've been wondering when I'd see you Mr Potter" Moving his eyes to the girl holding his hand then to her mother he cocked his head then saw Sirius "Ahhh Mr Black, Redwood 7" Dragon heartstring, excellent for duelling. Still working well I assume" Getting a nod he asked "I take it this is your daughter?" Getting another nod "Curious, part-Veela, unfortunately I don't use Veela Hair's as a core for my wands, no doubt you would react strongly to them, but none-the-less I'm sure we've find what you need here."

Looking back to Harry he ranted on some more "I'm afraid to say I sold the wand that did that too Mr Potter" Pointing to Harry's scar. Shaking his head muttering under his breath he asked "Which is your wand arm?" Harry cocked his head to the side "Well I'm right handed and Alyssa's left handed" Raising his eyebrow muttering "Curious" to himself he noticed the boy's left hand was in the girl's right "Just hold out those hands then, that's right like that" As a tape measure began flying around them seeming to measure anything on the person. When it seemed to measure around Alyssa chest area earning an 'eep' Harry's eyes narrowed but said nothing.

Then the tape measure suddenly dropped to the floor "Alright then you two try these wands out, just give it a wave" Doing so the wands were immediately snatched away. The process continued for nearly an hour and still no wands seemed to match the two. After a while he came out with a Holly Phoenix feather and redwood Phoenix feather almost expecting at least Harry's to work. But when he waved it nothing happened and Ollivander's eyes narrowed at him. Dumbledore had tried to charm the wand with one Tom Riddle's magical signature. He seemed to believe that the wand would choose Harry. Appears the old fool was wrong.

Muttering to himself some more Alyssa and Harry were getting nervous, no wands seemed to want to choose them. Going to the back of his shop he came back out and placed 2 wands carefully on the counter and started to explain. "These two 9" wands are very old, crafted by my ancestor. It has different cores. It has been passed down through my family for many generations. The core is said to be from the first two Thestrals, their hair. Obviously a male and female, the wood from the last known sentient tree that is a distant ancestor to the Whomping willow tree of today. Destined to serve someone with a important destiny. Never before has someone come into this shop, showing so little a reaction to any of my wands here. Go ahead pick them up. The first female thestral hair is on the left for you Miss Black, the male one the other side Mr Potter."

Looking at each other nervously they picked up the wands at the same time and they both felt a strong warming sensation and a soft glow came from the wand. Ollivander gasped, looking over to him curiously he spoke "In all my years as a wand maker have I seen a wand completely choose someone as their absolute master, these wands will not work for any other. If they are taken from you and used it will be nothing more than a wooden stick to them. I think we can expect great things from the both of you Mr Potter, Miss Black. Now that comes to 14galleons."

Paying the strange man who watched them intently when they left, Harry and Alyssa felt pleased with themselves. Sirius was looking at the kids with an intrigued look in his eye. They may be too young to see the hidden message in Ollivander's words. He specifically said the "First" thestrals. Meaning that they must have been mates, the fact the wands chose those two must hint at them becoming more then just friends when they are older. Much, much older the old Marauder hoped. With their shopping done they headed back home.