Summary: After learning of the Light Leader's betrayal, Harry is struggling with the idea of still standing beside Albus Dumbledore in the war effort against Voldemort, only fighting to be used time and time again. With Sirius gone, the Weasleys suddenly against him and Hermione giving him the cold shoulder, Harry couldn't help but find himself lonely and stumbles upon the Black Family Library. It was then that he finally delved deep into the Dark Arts, trying to understand what he had misunderstood so greatly. In the end, a decision was made to visit an alternate plane of existence in order to search for answers that'll help with the war. How is going to school with Tom Riddle going to affect Harry now that his perception of the 'Dark' has changed?

Warning: Dark Harry, multiple slash ending in HP/TMR and violence. Rating is also T but will go up to M.

DISCLAIMER: Anything you recognize belongs to J.K Rowling however, anything you do not, belongs to me. Also, this fanfic has been inspired by Aariya07's Hollow Thunder, Vital Lightning so credit goes to her as well for being my inspiration! If you haven't read her fanfiction I suggest you do because it's a brilliant piece of work. Finally the bit about debts in chap 2 was stolen from whitedwarf's Enduring Obsessions. You simply must read the fic. These disclaimers apply for the entire fic.

Anyways, on with the story...

''Speech''

Thought

''Parseltongue''

Harry looked down at the necklace blankly then back to the handsome face directly before him.

''I have done everything in my power to make you the best, now it is down to you to decide what to make of yourself. It was a pleasure to have known you Harry. Good luck.'' The deep, gentle voice of Ethan Karys did little to comfort the boy who lived, as a sad smile lingered on his lips.

Vaguely, Harry wondered about what he was leaving behind before deciding that there wasn't much worth thinking about. That is unless you count traitors, manipulators and back stabbers. Harry shook his head, this wasn't the time to think about the past, not when he was just about to make a new future for himself. One that, if accurately amended, would greatly contribute to the outcome of the war.

''Goodbye Ethan. I'll miss you.'' whispered the raven haired boy, finding it too hard to say goodbye to the brother he never had and one of the few loyal friends he did have.

Then, with one last fierce hug, Harry grabbed hold of his letter and emerald trunk before activating the golden necklace that hung around his neck. With a loud pop, Harry Potter had disappeared, aware of the chaos that would soon ensue as the Light realized they had lost their weapon and also knowing fully that Dumbledore would be absolutely furious.

''So you say that you are the last remaining heir of the Karys family?'' asked a curious Armando Dippet, his eyes straying to the ice blue stone that sat on Harry's third finger on his left hand. The Headmaster's eyes then skimmed the writing before him, carefully inspecting the letter in his hand, or to be more specific, the vague details of the green eyed boy in front of him.

In his head, Harry silently thanked Ethan vehemently for going through an inheritance ritual for him, for he was now the sole heir of the most Noble and Ancient House of Karys 1944. Being transported back to 1944 meant that he was no longer Heir to the Potter or Black House since and Heir already existed- but Ethan, being the kind-hearted brother he was to Harry, offered him the ownership of his family vaults since throughout the Karys history, ownership was not always handed down by family but on rare occasions, by power and strength.

At first Harry adamantly refused but Ethan had pushed and pushed until Harry opted for an exchange. In return for the Heirship of the Karys family during 1944, Ethan would be in charge of maintaining the Potter and Black Houses. This meant being able to take out and put in money, books and magical artifacts, it also meant being able to create alliances with the other houses and drawing up magical contracts and more. Since Ethan refused to become the heir for the two Houses they both decided this was the next best thing because the sandy haired man clearly stated his firm allegiance to the Karys House in which he was borne of.

Regarding the matter of any other remaining Karys family, Harry had done his homework and found there was a deceased son who's prior existence would prove useful for Harry if he were to claim that that he himself was an illegitimate son; he had several theories to back up his story and also the heir's ring.

''That is correct Headmaster. Since my mother is now deceased, it is up to me to continue our line and live up to my families expectations however, in order to do that I must of course first complete my education.'' Harry faked a perfectly forlorn smile at his 'mother's' death, suppressing a smirk as Dippet's gaze began to soften.

"Yes, I quite understand child." The Headmaster replied in a grave tone of voice. "The war has taken many lives but we survivors must unite under the Dark Lord's wrath and prove to be stronger."

"Quite." Harry responded curtly.

Dippet was now even more intrigued about Harry's past and ploughed on further. Obviously, the man wasn't well acquainted with the history of the Karys' so Harry was spared an even more intense interrogation. After all, the Karys clan was one for seclusion and secrecy, not many knew about them, not much was known about them by those who were privy to sensitive information and so they remained an enigma.

Harry calmly answered all the man's questions as vaguely as possible and once the man decided that he was not going to get much out of him, he settled for welcoming him to Hogwarts and informing him about the sorting.

From the lack of questions he was being asked about how he had managed to escape the Dark wizards and such, he figured that transfer students were not rare because of the war on the wizarding world's proverbial doorstep.

''And what did you say your full name was Mr. Karys?'' inquired Dippet, looking at him atop square framed glasses. The look he gave Harry was one of intrigue, not dissimilar to the way in which one may look at a puzzle when bored beyond measure.

''Hadrian Ethan Karys.''

The green eyed boy's tone depicted a distinct predatory threat and the Headmaster frowned internally at the niggling sense of anticipation in his gut as he nodded and waved the boy away.

It was the first of September and the Slytherin table sat in a cold, calm manner. They weren't gushing like Hufflepuffs, shrewdly analyzing like Ravneclaws and certainly not screaming like the Gryffindors as the first years were sorted but instead kept the image of stoic but polite company.

The seventh year Purebloods were coolly inspecting the sorting, not revealing the true painful boredom they actually felt whilst the Head Boy, Tom Riddle, was keeping an eye out for any potential first years harboring excessive power in their untrained little cores.

All of a sudden, Tom felt a pull. He couldn't put his finger on it but it felt decidedly pleasurable and made his magic sing; his aura started to writhe under his skin as another alien presence called to him. Ribbons of his own Dark and wild magic began to curl around him comfortably and caressed his body softly. As he was delighting in the feeling, realization dawned on him- it was someone's magical aura. Black tendrils of magic with a silvery hue made his senses go crazily awry and intoxicated him as he discretely inhaled it through his nose and basked in the sensation. The feeling was not oppressive still, neither was it demanding but alas it was only there for a minute before it was being pulled back to it's owner. Although it was gone, Tom could still sense the tingling, burning feel, leaving no trace it was other there. Other than the goosebumps on Tom's skin. He silently vowed to discover the source.

The grey eyed boy was immediately on alert. He knew no one at Hogwarts had an aura remotely similar to this but even if they did he would've known; Dumbledore had an insanely large white aura with specks of curious black in the middle - not to mention the fact that Dumbledore's magic was far from pleasurable but forcibly comforting. His fellow Slytherins had a grey flecked with black and it couldn't have been anyone else because he had already evaluated everyone who had passed through Hogwarts' doors thoroughly. This made him even more suspicious and paranoid as the sorting wore on.

Time was moving slowly as Tom's senses became more and more agitated by each passing minute and he had to clench his jaw slightly to refrain from growling at the mutterings beside him.

Finally, after the last first years were sat at the table, Dippet stood up to make his usual start of term announcements.

''Before I inform anyone of the important notifications for this year, there is one more student the sorting hat must sort.'' Dippet then nodded to a figure at the doors of the Great Hall which everyone had failed to notice.

Tom however, was instantly on his guard.

Who is this mysterious person? Is it not a first year? Why must he be sorted right at the end?

Thoughts were making his head reel and none of his questions were answered until a figure slowly emerged from the shadows.

It was a boy.

Said boy had raven black hair which reached the nape of his neck in a just-rolled-out-of-bed way and framed his face perfectly. His face held full rosy lips which were pulled slightly at the corners of his mouth in what Tom recognized as a sardonic smile; though it could also be mistaken as innocent and awed by the more optimistic people.

A small elvish nose which turned up slightly at the end sat between strongly defined cheek bones and over a firm, square jaw whilst, emerald, almond shaped eyes were piercing through every eye it encountered. The same eyes were framed by long, dark eye lashes which gave him a slightly unperturbed look which you could get easily lost in. Tom wandered what could give you such a disconcerting but beautiful eye colour.

The green-eyed boy also held himself in a confident but not yet arrogant manner and displayed elegance that not even the most practiced Pureblood could. His moves were fluid and strong and if not for the fact that his feet were seen hitting the ground, it would've seemed like he was gliding.

As he passed candles, it seemed like his obsidian locks were tinged with red but coupled with his expressionless face and regal gait, it made him seem rather cruel. More than one person felt the shivers caressing their spines as the malignant air the boy seemed to hold for fleeting seconds washed over them.

The newcomer was untouchable.

The entire Great Hall assessed him hungrily, girls sighing dreamily while their male equivalents looked on enviously and Professors watching on curiously. The Slytherin Purebloods were also looking on with great interest, carefully concealing their surprise at seeing someone other than Tom Riddle display such a confident yet dignified manner.

It seemed to take forever for the boy to eventually reach the raised platform and some were disappointed to see that they couldn't see him up close anymore.

''This young man will be joining Hogwarts for his seventh year,'' Dippet continued as some lower years let out sighs of disappointment while the seventh years sat up straighter in their seats ''his name is Hadrian Karys and since transfer students aren't such rarities any more I hope that all of you will make him feel welcome like you've done with other students.''

Low murmurs filled the Hall and whispers were exchanged between attentive ears. Some of the Purebloods also adopted a conspiring glance.

''Karys, Karys, I'm fairly sure that it is not a common Wizarding families name though it does ring a bell...'' Rabastan Lestrange mused in a hushed whisper so only the other Purebloods could hear.

''I agree, I remember a distant relative mentioning it once I think but I can't seem to recall the memory.'' Abraxas Malfoy eyed the boy on the raised platform suspiciously whilst Tom was also contemplating Hogwarts' latest arrival.

How very curious, the boy can't be a mudblood if I'm sensing that much power from him however, he continues to be a threat until I can get more information. Perhaps he'll be wanting a friend in this giant castle, after all it could get lonely being all by yourself... I'll be sure to welcome him with open arms.

Looking around he saw that specific groups of Purebloods on the three other table also had their heads together and a Ravenclaw was even noting everything down on a spare bit of parchment.

The minutes seemed to stretch into hours when in fact the sorting had only been six minutes long. Longer than average but not the longest.

Students and Professor's alike were perched on the edge of their chairs in eagerness and Tom could also see Dumbledore inspect the boy without the annoying twinkle in his eye.

Finally, the Hat ripped at the brim and screamed...

''SLYTHERIN''

The Great Hall sat for a minute. Stunned. Gryffindors sagged, Hufflepuffs blinked and Ravenclaws shared a calculative look but Hadrian had aroused the Slytherin's cynicism. Finally the snakes started politely clapping.

Hadrian jumped down off of the platform and calmly walked to the end of the Slytherin table. It seemed that he could not hear the rest of the whispers that enshrouded the Great Hall but he could. Hadrian just had a lot of practice in ignoring them.

When he had decided to come to this time, Hadrian was thinking about finally having a quiet life whilst surreptitiously completing his mission but apparently, stare and whispers stalked him like his own shadow.

However, instead of blushing and looking nervous like the previous Gryffindor he was, he instead wore an impassive and cold mask. When he noticed that several Slytherins were looking at him with dubious expressions, he merely inclined his head before sitting down to begin his feast.

Tom was getting impatient though. He had wanted the boy to introduce himself to him and then the Prefect would've warmly welcomed him and provided him with a support. Clearly, the boy was not the talkative type.

The Purebloods all shifted curiously in their seats, vying for a closer look at the newcomer and Tom swallowed his sneer. They were supposed to be presenting themselves as calm and collected not as a bunch of fidgeting idiots.

''Good evening. Headmaster Dippet probably hasn't informed yet but I am Tom Riddle, a Prefect and Head Boy. Usually, I show you around and help you out until you feel comfortable with your classes, lessons and such. So if you need anything don't hesitate to ask.'' The grey eyed boy spoke softly, motioning for people to get out of the way so he could see Hadrian properly. He would've also shook his hand but leaning over the table was so undignified.

Tom stared directly at the Karys Heir and smiled so the full brunt of his charm fell upon him, but he also saw for the first time that Hadrian's eyes were a strange Avada Kedavra green that swirled with hidden power and knowledge.

Hadrian continued to stare at him with an inscrutable mask.

It was then that Tom did something he had never done for as long as he could remember. He hesitated. And it annoyed him a great deal actually. Sensing Tom's annoyance, the Malfoy Heir took over.

''Good evening, I am Abraxas Jaculus Malfoy.'' The pale blonde held out a hand to shake and was relieved when Hadrian shook it firmly. He also felt a spark of familiarity shoot up his arm.

Hadrian's lips turned up in a small, secretive smile as he saw a flicker of surprise flash through Abraxas' silver eyes. Most people wouldn't see that flicker but Hadrian wasn't most people. The raven haired boy cocked his head to the right slightly before a pensive look befell his face as he took in Malfoy's sharp features.

Abraxas had a full head of platinum blonde hair that fell midway down his back and from what Hadrian could see, a muscular and toned body. A thin pointed chin struck out pompously and soft, pink lips were pouting slightly. Hadrian vaguely wondered if Abraxas would whimper and moan for him like his grandson did if Hadrian were to suck on his neck. Ahh Draco was certainly more entertaining as a bed warmer rather than an enemy. He had livened up Hadrian's sixth year impossibly. A ghost of a smirk appeared on his lips as he grinned darkly. He would have to test that theory.

Meanwhile, Abraxas was slightly anxious at the wild look on Hadrian's face. If the Karys Heir lived up to a tenth of his name, he would surely leave Abraxas dead for the Thestrals.

Strange... where had that thought come from...?

''It's a pleasure to meet you Abraxas. I'm Hadrian Ethan Karys, but please call me Hadrian.'' Harry shot him a small smile that would have the entire of the Great Hall weak at the knees whilst those of the Slytherin Table were still secretly marveling at his voice.

Hadrian spoke in an playful tone that also had an authoritative edge to it. It was as if his words were chosen meticulously and his voice sounded rusty with misuse. Also, when he said his surname, it was accentuated by a slight hiss ending in boys and girls alike to feel a spike of arousal.

Abraxas eventually pushed his intrigue to the back of his mind, shifting into a more inconspicuous persona and decided to start conversation with an easy and relatively safe topic.

''Then I must extend the favor and ask you to call me Abraxas. So, Hadrian, what is your opinion of Hogwarts so far?'' The Malfoy Heir was genuinly curious since no one knew what Hadrian was used to or preferred and his opinion would provide an insight on some of his personality.

Hadrian thought about what to say before settling on a simple phrase which couldn't be picked apart and shrewdly analyzed.

''It is unexpected.''

The Purebloods were all nodding politely, attempting to not disclose the awkwardness they felt. There were lots of things that could be depicted from that three worded answer and none of them could be sure about anything. It was becoming tiring.

''Dear me Abraxas, have you forgotten your manners?'' Harry raised a perfectly arched eyebrow before he turned towards the sound of the haughty voice and saw that it belonged to a pretty brunette. ''Do introduce the rest of us.''

''Of course Lucretia, how silly of me.'' Abraxas shot her an amused smile before introducing the rest of the Purebloods.

Hadrian payed careful attention to the Purebloods and recognized most of the Black's from their family tree. He also referenced them from Sirius' mini history lesson.

There was Lucretia Black and Elladora Black amongst the Black males and the girls had shiny black hair reaching their backs with sharp blue eyes. Sixth year Orion Black was the brother of seventh year Regulus Black who shared a cousin called Alphard Black also in his seventh year. Hadrian distinctly remembered that Alphard was the uncle who lent Sirius money when he decided to run away. The Black males had straight black hair and had the trademark blue eyes that belonged to all the Blacks. There was also a Eloise Rosier with perfect honey blonde hair and Stacey Moon, a pretty brunette. Antonin Dolohov seemed to be Tom's right hand and was a pale blonde who looked overly suspicious of Hadrian though Hadrian didn't particularly care. There were also a few more that Hadrian remembered and over all the Purebloods were a prim and proper bunch.

The rest of the feast passed smoothly and Hadrian was amused to see that the Purebloods grabbed him before he could walk away. It seemed that they wanted to make sure he didn't get lost or get into danger but Hadrian knew that if he were visibly to appear as a mudblood they would not have even batted an eyelid. But he humored them in the end.

The Slytherin Common room was much like the one he had visited in his second year when he, Hermione and Ron suspected that Draco Malfoy was the Heir of Slytherin.

It was decorated lavishly with plush, green armchairs, low coffee tables and cozy, emerald green rugs. The golden lights added to the fact that the room was under the lake meant that the room was lit in a soft green light. Another thing that Harry noticed was that in the center of the room was a circle of chairs and at the head was one particularly grand, high, wing backed chair that practically screamed ''importance''-he wondered if he could get away with sitting on it- Hadrian had no trouble guessing who was at the top of the Slytherin Hierarchy. Though he gave no indication that he knew anything.

The girls bid the boys good night and then Hadrian was led to his bed in the snake's lair.

After entering the room, the green-eyed boy quickly spotted a bed with his name engraved on a plaque and so he made a bee-line towards it. The rest of the males equally scattered towards their own beds, mumbling ''good nights'' as they changed into their pajamas whilst Hadrian cleaned his teeth in an unsurprisingly luxurious bathroom.

And then as soon as his head hit his pillow, he was fast asleep. Not before putting up wards around his bed mind you.

In the morning Hadrian was up just before the sun rose so he decided to go to the courtyards near the lake to engage in a heavy workout since he had been slacking off a great deal.

Once there he performed all his exercises with the fluidity of a dancer. Lately, he had been trained in the arts of combat and his physique had to be top notch or else his performance would suffer.

Several mermaids had popped out of the water to closely watch Hadrian before other creatures joined in, meaning that the merfolk had to retreat to safety. Even the giant squid waved a slimy tentacle in good humor.

Looking again at the sun, Hadrian could tell that it was time to go back up to his dorm before having a shower and proceeding to breakfast. So he jogged back up the dungeons and opened the entrance to the Slytherin common room with whispered parseltongue(he didn't even need to remember the passwords with this nifty little trick),

He also wondered about the schedule he'd get for classes later on in the morning.

Half jogging up to his dorm, Hadrian wondered about what exactly he should be doing now that he was in 1945. He mused about his experience so far and contemplated the year in which Grindelwald would be defeated by Dumbledore. Perhaps he should get involved in some politics to amuse himself for some time.

Shaking his head, Hadrian silently entered his dorm room to see that everyone was still sleeping, even Tom.

Well it is still 5:30 AM

He carelessly shrugged his shoulders and went to take a shower before breakfast.

Annoyed was a major understatement for what Tom currently felt at the moment. He was supposed to be helping Karys out by showing him the way to breakfast only to find that the raven haired boy was missing. Literally.

None of the boys saw hide nor hair of him since last night and Antonin reported that his bed looked like it wasn't even slept in.

''Well this is getting ridiculous. The boy was supposed to be here twenty minutes ago and now we will be late for breakfast.'' Tom growled in displeasure at the utter insolence Hadrian displayed. They had a routine for Merlin's sake! The First years would go in first and sit nearest to the Professor's table, and then the second years would go in and so on. This meant that the older you were the more distanced you were from the teachers and you had your own privacy. However, the elite would sit in their assigned seats in the middle of the table so they were equidistant from the entrance to the Great Hall and their Professors. It also looked more organized to walk in in an orderly fashion like the Slytherins they should act like rather than in the disarray other Houses entered in.

Truth be told, no one exactly told Hadrian to be down and waiting but none of the boys wanted to get hexed. The girls had also gone to breakfast ten minutes ago.

''Shall we carry one without him? He might already be there.'' Abraxas spoke boldly in a soft tone, not wanting to displease Tom any further. It would do no one any good.

Eventually, Tom let out a short sigh which was saturated with annoyance before nodding curtly. Perhaps the boy had already gone to breakfast, though Tom doubted it since the castle was huge and he could easily get himself lost.

Alphard hollered at the First Years to get a move on and then they were on their way to the Great Hall.

Hadrian was contently sipping at a cup of black coffee whilst completely ignoring the food on his plate. Since his time with the Dursley's, Hadrian could only eat a small amount of food and he was still full from last night's feast. From his inheritance into the Karys House, he had also begun to abhor the vile concoction that was pumpkin juice or any type of fatty or greasy meat.

He sat in the middle of the table with his back to the wall, in solitude, and watched the rest of the student body converse with each other, shooting him curious glances from time to time. He had purposefully avoided sitting in yesterday's seat purely to amuse himself seeing the disorganized seating arrangement but he knew no one would do anything. If only for the fact that he was still under observation. Currently he sat in Rabastan's seat but the latter only raised a brow and proceeded to a vacated seat that was supposed to be Hadrian's.

He noticed that the female part of the Slytherin Purebloods were also looking at each other before discretely sliding their eyes to the door, as if waiting for someone.

Ignoring all the looks, stares and whispers he got, Hadrian tried his best not to pull Dumbledore's twinkling eyes out of his head. It was positively infuriating the way the now auburn hair Dumbledore would smile jovially at him even when Hadrian pointedly ignored him.

Now that he noticed it, Hadrian also saw most of the Professors would briefly glance at him before quickly looking away when they met his cold eyes.

Out of the corner of his eye, Hadrian saw the rest of the seventh year Slytherins take their seats as the firsties bustled round looking for a space to sit. He also saw how Tom was sending pointed looks as some of the boys.

''So Karys, we were waiting for you in the Common Room.'' Alphard spoke up in a curious tone and Hadrian smirked slightly but didn't reply.

The young Black looked at the rest of the Slytherin table, as if in wont of assistance yet no one rose to the plea. It was quite amusing actually. Some of the other Purebloods tried to initiate conversation too, before they too gave up to Hadrian's clipped answers. That only lasted for so long before everyone was up for another round of Interrogate Hadrian.

''So Karys, what classes are you taking?'' Tom decided to take charge of the situation considering that the rest of his elite were stumbling over each other trying to force words out of Hadrian's mouth.

Everyone watched as the raven haired teen slowly sipped at his coffee before letting out a small hum. This was a chance for Tom to regard the boy's worth and his chosen subjects would provide an insight on Hadrian's personality, like if he preferred Herbology to Potions because it was less taxing or he, himself, was too lazy to put in an effort.

''Well hopefully I'll be taking: Transfiguration, Potions, Care of Magical Creatures, Defense Against the Dark Arts, Herbology, History of Magic, Ancient Runes, Arithmancy, Charms and Magical Theory. I would've liked to study Alchemy as well however, Headmaster Dippet told me that there wasn't a high enough demand. Rather disappointing actually.'' Hadrian took another sip of his black coffee, oblivious to the gaping mouths displayed in front of him.

''Merlin! Ten subjects?! That's just like your schedules going to be Tom, though you've got Astronomy instead of Care of Magical Creatures.'' Alphard looked horrified at the amount of effort that would need to be put into that workload and seemed as if he really pitied Hadrian.

It was just then that Professor Slughorn came by to pass out the schedules and Hadrian noticed a particularly curious look aimed at him. While the others were cross referencing their schedules however, Hadrian was wondering about what the day would bring.