A/N: This is something i've been thinking over for a while now. I've only seen a handful of Assassin!Harry stories and only read one. (Sang Lys ring a bell, Great story by the way which i recommend to anyone who likes a [Excuse my french] badass Harry story). Anyway this will be completely AU and it will be confusing at first i can only guess. I will do bare minimum in terms of slash and lemons and love will not be a priority in here so please don't ask for pairings as they have been decided. As for skills harry will have, I can hold some Posts and stuff but we can only guess as the story goes. So enjoy the story i guess, i may need a beta if anyone is interested, Anyway R and R if you enjoy and have any suggestions.

Disclaimer: Assassins are badass and deadly, Harry Potter isn't under J.K Rowlings standards. So i guess i don't own harry potter seeing as she is the mother of this wonderful series, I can only take what she gave an improvise, In conclusion, No i don't own Harry Potter.

Chapter 1: First Blood

Darkness, what was the true intent on such a mysterious phenomenon? Was it a benevolent event that cloaked us in its indifferent sheet of solitude when we want peace and quiet, or was it a dangerous and addictive drug that forces man to do unthinkable acts. Some of us walk this fine line of darkness peacefully without a problem and go on to live full but mundane lives. Others fall into the abyss of darkness when our souls become tainted with the black inkiness of such a malevolent substance. Me, I am Harry James Potter and i walk this line while living both lives.

"Boy! Wake up right now and clean this bloody house or else i will tan your hide so badly being a freak would be the least of your worries." Uncle Vernon shouted from outside the small cupboard where one, Harry Potter resided. The walrus incarnate of a man's skin was blazing red borderline purple in harsh rage. Despite the house being shiny clean, The Dursleys had a reputation to keep and they couldn't afford anything spoiling it, not even their freak of a nephew. Number 4, Privet Drive was to be the talk of the neighborhood at the end of every day. As the tiny door opened from the cupboard blended under the stairs, A small sickly boy crawled out barely dodging the swinging fists of the much larger man."Just hurry up boy or you wont have a meal for the next 4 days!"Vernon growled to the small 10 year old. Today was the day that his sister Marge was coming and he didn't want her to arrive with a halfway decent house. The small boy ran off to begin his chores, this was a daily thing for him, nothing new. Clean the Kitchen, Mop the floors, Dust the furniture, Cook dinner, Mow the lawn, Garden the bushes and plants, Clean dudleys room then finally go back to his small cot and act like he never existed until they needed him the threat of death, Harry found this life peaceful, He accepted death at any moment but it wasn't because of his aunt and uncles keen intent on killing him, No. He was unique he reminded himself. 'They chose him for a reason' he thought to himself. Moving on with his chores, he smiled slightly, his mind on the small object burrowed on his cot in his cupboard. The object that gave him life.

"Boy, Marge is here! If you're not done cooking in the next 15 minutes you won't eat anything for a week."Harrys mental escape was broken by his uncle, he looked down at the cooking food and saw it was almost done, as he called out. "10 more minute uncle vernon" God he hated that man. Harry absolutely loathed the dursleys and their relative Marge, She had a small bulldog named ripper who marge loved to send after him. The small demon dog once caught harry and he had to spend a week in the ER for a chunk of his hand gone. Luckily he had fast healing or else he would have been handicapped for a long time. Wincing slightly at the phantom pains he looked at the clock noticing how fast the time flew. Quickly plating the food he quickly took it out to the table and went back to cleaning the dishes. Once done he went back to his small room and went to grab the evening news. Opening the door and fighting the urge to run and never return, Harry bent down and picked up the paper that is, until a small envelope caught his eyes. Grabbing it, his eyes widened as he saw it was addressed to him, Looking around he saw nothing or no one who could've left it until a small hooting caught his ear. Looking up he was an owl on the branch of a tall oak tree besides the house. Ignoring the bird, Harry walked back into the house quickly stuffing the letter in the waistline of his faded jeans and covering the rest with his oversized ragged shirt. Quickly delivering the evening paper to the behemoth of a man, Harry ducked quickly avoiding a careless swing towards his person that would've surely left him in a daze had he not dodged. He quickly moved away hearing marges complaining about him as he frowned, Oh how he wished he could hurt them like the repeatedly done him.

Walking outside he scanned the sky, Watching the horizon as the sun faded behind the night time he smiled. He wished he could study the sky, he loved looking up at the night sky and making designs with the stars in the endless night. Resigning to his final job for the day, harry grabbed the hedge clippers and walked over to the bushes, The oversized tool was a killer on harrys malnourished form but he expertly got the job done wiping the sweat from his forehead as his hand passed the lightning bolt sky. He was always curious of the odd shaped scar and the strange presence that seemed to reside in it. His aunt told him he had got it in the drunk driving accident his parents lost their life in but he still couldn't explain the strange energy that seemed to sprout in his mind originating from that very spot. He couldn't connect the dots but decided it wasn't too important. He was broken out of his thinking by a rumbling growl behind he spotted the bane of his existence, ripper stood there staring at harry with his beady eyes. a snarl on his canine features as he took a confident step forward. Harry in turn took a step back, caution evident on his face, he didn't want a repeat of last time they faced off, He tried to find a way out of this situation but time wasn't on his side as the dog charged, barking loudly. It jumped lunging at the young child who out of instinct duck the dog who in turn landed on his feet rolling over to face the last Potter. Harry began sweating, He was all alone right now, it was either take down the dog or end up in a hospital. The dog growled and charged again hopping at potter, Out of instinct he rolled to the side grasping the first thing that came to hand, Whether instinct of luck he thrusted the object at the dog as a loud squelching sound hit his ear followed by a whimper and a gurgle, opening his then closed eyes he was met with the sight of rippers throat impaled on the same gardening clippers he was using earlier, blood running down the handle and his hands, looking down he saw his clothing was bloodsoaked. Looking back at the dog, Harry saw the life fade from its eyes as the body ceased its movements. With a satisfied grunt, Potter took the tool out of the dead dogs throat and tossed it to the side, this was no different that the other times, he thought to himself. Suddenly a loud scream pierced his ears as he turned to find Marge and Vernon staring at him, Twin expressions of demonic fury pasted on their faces. "Just my luck." He muttered to himself as they waddled towards him, Murderous expressions on their faces.