A/N: Hi! This is my first fanfiction ever so I hope you like it and won't be too harsh on me :) Please review at the end to let me know what you think... enjoy!

Disclaimer: I don't own anything and some of my ideas have come from other fanfictions out there which gave me the inspiration to write my own story.

Edited 22/8/2013: A huge THANK YOU to LaraLumos for all her help editing this chapter :)

Chapter 1

"Avada Kedavra!"

"Expelliarmus!" The bang was like a cannon blast, and the golden flames that erupted between them, at the dead centre of the circle they had been treading, marked the point where the spells collided. Holly saw Voldemort's green jet meet her own spell, saw the Elder Wand fly high, dark against the sunrise, spinning across the enchanted ceiling like the head of Nagini, spinning through the air toward the mistress it would not kill, who had come to take full possession of it at last. And Holly, with the unerring skill of a Seeker, caught the wand in her free hand as Voldemort fell backward, arms splayed, the slit pupils of the scarlet eyes rolling upward. Holly stood with two wands in her hands, staring down at her enemy's shell of a body, watching as if in slow motion as it fell backwards and just as it was about to hit the floor...

Green eyes snapped open, glowing ominously in the darkness. For over a month now Holly had been trying to get over the death of her archenemy to no avail. She kept picturing the flash of pure terror that had been in those scarlet orbs when the Elder Wand flew out of his hand. But more than that, it was a feeling that she couldn't shake, a feeling of complete and utter loss that had become her constant companion.

She thought nothing of it at first, assuming that it was to be expected after having lost so many of her loved ones in the Final Battle. But she had lost people before: she still remembered the pain of losing Sirius, Dumbledore, Dobby, Hedwig… and she had felt that same powerful grief over and over as she was read the list of deaths that occurred during the Final Battle, but nothing compared to this constant ache, this feeling that part of her was literally missing. She had never felt so empty and alone.

This led her to reason that perhaps it was the loss of the Horcrux that made her feel this way. After all it had been a part of her throughout her whole life. But then, if that was indeed the case, she should have felt different the moment she returned to her body in the Forbidden Forest. But she hadn't. Sure, she had felt a small sense of loss similar to what she felt after every Horcrux was destroyed. She had felt the by then familiar jolt of pain and the little ache that settled in her now empty chest. But nothing as drastic as the overwhelming emptiness that now filled her. An emptiness that had started the moment that Voldemort died.

This line of thought, together with the recurring nightmare of Voldemort's death, led her to the conclusion that the deceased Dark Lord was to blame for her latest bout of grief. And suddenly the feelings invoked by the destruction of each Horcrux made sense. The ache that, now that she thought about it, had steadily grown as Voldemort came closer and closer to death, the ache that had then escalated into a bottomless hole in the middle of her chest. It all came back to Voldemort.

The question was: why? Why did she feel so miserable?

Trying to find the answers to these questions, Holly secluded herself in the Hogwarts library for days on end, and when that failed to provide her with any answers, she moved onto the Black family library. She slowly distanced herself from her friends who didn't understand her sudden obsession with reading and within a few weeks she had completely isolated herself, only interacting with Kreacher who made sure that she ate three meals a day.

It was when she had almost given up hope that she stumbled upon a dusty tome, hidden in a shadowy corner of the library. It had a dark brown cover and looked to be hundreds of centuries old. It was so worn out that she couldn't even make out the title, if it had had one to begin with. She carefully flicked through it anyway and stopped when the heading Soul Magic caught her eye. Thinking of the Horcruxes, which had to have been a type of soul magic, she quickly skimmed over the introduction and focused on the main explanation.

Soul magic, id est the manipulation of the soul trough magical and/or ritualistic means, is one of the most ancient forms of magic.

While wrongly considered to be a branch of the Black Arts, due in part to the practice of splitting one's soul as a form of immortality, Soul Magic is in fact transversal across the Magical spectrum as evidenced by the well-known power of love, alias 'Vim Amoris', the most powerful of the White Arts.

Naturally, only those of extreme magical strength and indomitable will can safely practice the extremes of the spectrum for it is easy to lose one's mind in the feel of such tremendous magic.

To keep balance in the magical world, the birth of a wizard who is able to practice the Black Arts will be accompanied by its opposite. It is speculated that these unique individuals are connected in various ways, but most importantly through the creation of a soul-bond, which in itself is a very rare phenomenon. Due to the rarity of the existence of soul-bonded pairs, the concept of soul-bonds is often wrongly mistaken for a myth created by hopeful romantics; however, it is in fact a reality.

The opposite affinities of the two magicians will allow them to wield both Light and Dark magic, as well as the much rarer wandless magic. Each soul bonded pair therefore consists of two powerful individuals with grey cores, which can be twice or even thrice as large as those of an average wizard.

However powerful these wizards may be on their own, when together, a soul-bonded pair, is said to be unstoppable. Such was the case for Merlin and Morgana, who are the most famous soul-bonded couple in history, remembered and celebrated by the entire Wizarding population for their extraordinary magical deeds.

Individuals with enough power to wield Soul Magic can be identified from a young age as they will display a strong affinity towards Light or Dark magic by being able to cast complex spells of either one, earlier than normal. Exempli gratia Morgana was able to cast the Patronus Charm at the age of fourteen, demonstrating her aptitude for Light magic and in turn the White Arts.

There are, however, negative effects caused by soul-bonds. In the eventual death of a wizard in a strictly platonic soul-bond, the surviving wizard will suffer from a great depression and they will have to endure feelings of loss for the remainder of their lives. On the other hand, in the case of a physically activated bond which has not been fully consummated, the death of one wizard will inevitably lead to the death of the other. However, if the bond has been consummated, then neither wizard can die while the other survives; in order to die, either must die at the hand of the other, which will result in the death of both. Exempli gratia in the famous battle between Merlin and Morgana they vanquished one another.

It is very easy to confirm the existence of a soul-bond as a simple blood test will suffice.

Holly snapped the book shut and slumped back in her chair, her heart racing. It sounded like she was able to use the White Arts and she had shared a soul bond with Voldemort. Holly put her face in her hands and groaned before standing up. Summoning a dark cloak from the nearby closet, she apparated to Gringotts with a quiet pop.

Holly stormed determinedly through the bank, not even sparing a glance to the numerous wizards that had stopped to stare open mouthed at the proclaimed 'Vanquisher of Voldemort'. It made her think about the possibility that she could have murdered her soul-bonded, which she didn't want to believe.

"I need a blood test" she demanded urgently, storming to the front of the queue and forgoing her usual politeness. The goblin that she had interrupted sneered at her, but got up to lead her to the back office anyway.

"Here we are. Godrod will meet you inside" his sneer intensified, but was completely overlooked by Holly who hadn't even waited for him to finish speaking, already having stormed into the room.

"Hello, Godrod I need a blood test" she said as a way of introducing herself. Not appreciating her rudeness, Godrod nastily looked at her without moving. "Now!" she practically snarled, her magic pulsing angrily around her. It seemed that she was not holding it together as well as she thought.

"Very well Lady Potter" said Godrod with a grimace, feeling her magic swirling in the room. "I will require a few drops of your blood on this piece of parchment."

Holly grabbed the dagger that the goblin was holding and pricked her finger, allowing five drops to fall on the parchment that Godrod had pointed at, which she noticed was glowing slightly. The goblin then produced a vial filled with a clear liquid and poured it over the parchment. Holly watched anxiously as words started to appear:

Holliana Lilian Potter

Blood-status: Half-blood

Father: James Charlus Potter (Pureblood - deceased)

Mother: Lily Victoria Potter nee Evans (Muggleborn - deceased)

Heiress to the House of Potter

Heiress to the House of Black

Heiress to the House of Peverell

Heiress to the House of Gryffindor

Heiress to the House of Emrys

Magical Heiress to the House of Slytherin (through soulbond)

Magical Heiress to the House of Le Fay (through soulbond)

Soulbond status: Platonic soulbond to Tom Marvolo Riddle (Halfblood - deceased)

Magical binds: 55% magic locked (authorised by APWBD)

Total funds: 84,211 galleons

Holly sharply inhaled as she realised that she had stopped breathing. Rage and sorrow mingled together as she fought to keep control of her already volatile emotions. She had murdered her soul-bonded, her one true match. And it was all because of Dumbledore. Betrayal shot through her, leaving a sour taste in her mouth. She had worked hard to try to forgive her Headmaster for leaving her the impossible task of finding and destroying all the Horcruxes with hardly any help, for lying to her over and over again, for all his manipulations. But this discovery changed everything. He had blocked more than half of her magic for who knows how long. She had gone into war with a huge disadvantage. He had wanted her to fail. This made her wonder: did he know? Did he know about the soulbond? It was a matter of conducting a simple blood test after all and he had had plenty of chances to get ahold of her blood.

Holly looked up to see Godrod's worried expression and she realised that every object in the office was rattling, her magic reacting to her emotions. She took a deep breath to calm herself and her magic and turned back to the goblin.

"Would you like to claim your Ladyship rings? You are now of age so may take your place as the rightful Head of each of these Houses".

Holly nodded, still silently fuming. After a very lengthy process of receiving each ring separately and then being shown how to merge them all together into one, Holly was informed that she was now one of the richest and most influential witches in the wizarding world. 'Great, more unwanted fame,' she thought, scowling.

"Are you also able to remove the magic block?" she asked, once they were finally finished.

"Of course. If you'll follow me."

Holly walked behind Godrod into a separate chamber that appeared to be a ritual room. Mirrors lined the circular walls and a circle was drawn in the middle of the room, outlined by candles and runes.

"Stand in the middle of the circle, please."

Holly followed the instruction and the goblin left the room, gleefully saying: "It might hurt."

Holly could confirm that it did indeed hurt. Being under the Cruciatus curse paled in comparison to the pain that she was feeling. Blood seeped from the lip she'd been biting to refrain from screaming as her body curled into itself. Just when she was about to start screaming the pain stopped and was washed away by the feeling of her magic flowing freely for the first time. It spread throughout the whole room almost as if it was stretching after being suppressed for so long. Holly could almost hear it purring in contentment as pleasurable sparks ran along her body.

For a moment she felt the constant emptiness disappear as she rejoiced at being reunited with her rightful powers; however, it soon returned with a vengeance, even stronger than before. It seemed that her amplified magic was even more aware of what she was missing. In that moment Holly decided that she couldn't live like this. She had to find a way to fix her mistake: she would rather die than continue living without her soul-bonded. She sighed, it was time to return to the library.

Two years had passed quickly since Holly discovered about the soulbond and Dumbledore's betrayal. During that time she continued her self imposed isolation, realising that now that she had served her purpose and defeated Voldemort none of her friends seemed to make that much of an effort to see her, Hermione and Ron being too busy exploring their new relationship to even want her around. Whilst it had hurt at first, it suited Holly just fine as she was busy looking for a way to go back to the past.

Holly had vastly improved her magical knowledge. Now that she had all of her magic at her disposal, she found it easy to master new spells and she had even begun training herself in wandless magic. At first she could barely levitate a pebble, but she was getting better every day, to the point that she could summon objects with merely a thought. Unfortunately she had yet to learn how to cast offensive and defensive spells without a wand, but she was sure that she would get there eventually. Unfortunately, she had yet to find anything that would allow her to go back to a time when Voldemort was alive, a quest that seemed more impossible each passing day.

Even dabbling in the Vim Amoris had been no help, although Holly was pleased that she was at least making some progress at mastering this new magic. She had always been sceptical of Dumbledore's rumblings about the power of love, not realising how powerful a branch of magic it actually was. She learned that as a wielder she had extra charisma, was naturally charming and she could influence the masses, more specifically their positive emotions. Holly realised that this was probably why people flocked to her in moments of need. Her favourite however, was the form of Shadow travel that she could do. She could appear and disappear in a flash of white, much more comfortable than any other form of transportation if you asked her. And she had merely scratched the surface of the potential of the Vim Amoris, who knows what she could be capable of with more time.

Despite her new abilities, Holly was always restless. She needed Voldemort to be alive as without him the emptiness in her heart would never abide. Desperate for answers that she had not been able to find, she had turned to the Deathly Hallows, surely Death could help in her quest. The only problem was that there was very limited information on the Hallows and even less on using them together. All Holly had gathered is that as its Mistress she should be able to somehow control Death. It was the how that was missing. Holly would have been happy to know even just how to call the entity to her.

She sighed as she closed yet another useless book and leaned back in her chair.

"If only it was as easy as summoning the Basilisk in the Chambers of Secrets... but it's not like I can just say 'Oh great and powerful Death show yourself before your rightful Mistress, owner of the three Deathly Hallows' and Death will appear before me," Holly mumbled sarcastically to herself.

"Just Death will do" a metallic, whispery voice said from behind her, making her jump up from her chair. Holly span around, silently summoning her wand, coming face to face with a hooded figure shrouded in darkness that was leaning lightly on a scythe.

"Death?" she asked hesitantly.

"As I am bound to you, you may call me Thanatos" he said with the smallest tilt of his head. "Please... sit" he gestured to the chair Holly had just vacated and gracefully sunk down in the one opposite her. "Took you long enough to figure out how to... summon me" he seemed to frown slightly. It appeared that he didn't enjoy being 'summoned'. "However your struggles have provided me with some amusement these last few years" a hint of a smile seemed to touch his lips, but it was hard for Holly to be sure as his face was still obscured "That is one of the only things mortals are good for... entertainment" he drawled "But you are not quite mortal anymore are you? You are, after all, my... Mistress" he practically snarled the last word, making Holly flinch slightly in her seat. He definitely did not like being bound. "Regardless... I am here now. What do you wish of me?"

Holly tilted her head slightly to the side and looked determinedly at Death, or Thanatos. "I want to go back to a time when Voldemort was still alive," she said with more confidence than she was actually feeling, "I can't say that I don't hate him, but I need to feel whole again."

"Ah... so first you disregard one of the rarest gifts Magic could have bestowed upon you and now you expect me to fix your mistakes when you can't face the consequences. How typically... human"

Holly frowned and made to interrupt but Thanatos held up a spidery finger to stop her.

"Nevertheless you have collected my Deathly Hallows, therefore I have to help you" he continued bitterly. "There is a way for me to send you back without disrupting your lineage too much... I will place impenetrable shields around your mind that will prevent anyone from finding out about your past... or future. Unfortunately you will not be mortal, but you will have to collect my Hallows to be able to once again wield their power, such as controlling me" the way Thanatos drawled his words reminded Holly of Snape and she had to suppress a smile of amusement at the comparison. "You will have to bring back the balance between Light and Dark once more and let me warn you it will not be an easy task... it will, in fact, be extremely arduous" he seemed pleased at the prospect. "Does that solve all your problems?" he asked, with the barest hint of sarcasm.

"It does, thank you" Holly said, disregarding his less than friendly attitude and focusing on the long awaited answer to her problems instead.

"Then farewell for now," Thanatos smirked and with a snap of his fingers Holly's world went black.

When she opened her eyes again, she wanted to groan in exasperation. Thanatos had sent her into the body of a fifteen year old.

A fifteen year old that was currently facing an angry Grindelwald.

A/N: So how did I do? Let me know :) please review... until next time :D

Edited 22/8/2013