AN: Sorry, but another story! Don't worry. Any questions that you have about this story will be answered in due time! If you see any mistakes, have a comment, or see a good idea for the plot then please don't be afraid to speak your mind. Now that I have this idea out of my head I will be able to write my other stories more.
Major spoilers for HBP. If you don't want to know then don't read.
Chapter 1: Enticing Darkness
Harry sat on the edge of his bed contemplating the events of the past year. Pure hatred and rage swelled inside of him as he thought of the traitor. Snape was going to pay, but first Harry had to train. Somehow he needed to learn to fight. He hated to admit it but the man had to be a genius. He needed power and knowledge to fight someone who was writing Dark spells while attending Hogwarts.
No matter, he thought, I'll get him and I'll...I'll kill him. At that moment a part of Harry Potters heart hardened. He didn't like fighting but he knew that this was something that he had to do. I'll kill him and every Death Eater that I can find. I'll avenge Dumbledore, my parents, Sirius, Cedric, and everyone who has died because of that horrible man. Then I'll go after Voldemort...
He stood and looked out the darkened window. He had been setting on his bed since returning from the train station. For hours he sat thinking about Ron, Hermione, Ginny, and all of the others that he thought of as friends. He felt the warmth of friendship when thinking of them. His only family. After a while he came to Dumbledore. The man had made some bad decision but he still felt like a grandfather to him.
After staring into the darkness for what seemed like hours he turned back to his room. He needed a plan to get out and train. Find someone to teach him to be stronger, to be faster, and to be...a killer.
"I'll go to Diagon Alley and get some books," he said to himself. "Then I'll to the Order to see if they are willing to help me. In one weeks time I will start my mission and I'll do whatever it takes to avenge those who have fallen."
With a determined mindset he went to his trunk to find the most advanced defense book that he owned. Sifting through the piles of school objects turned his mind from his surroundings. As he pulled out robes, books, parchment, and other things he did not see the shadows swirling about his room or the growing darkness behind him. Monstrous shapes ran along the walls and on the ceiling. They appeared to have no solid shape as if they were only shadow.
At last he found the book, but froze when he pulled it from the trunk. He had seen movement out of the corner of his eye. Hedwig was sleeping so it could not have been her.
Harry discretely pulled out his wand and stood with the book in his hand. The shadows jumped from the walls and met in mid-air right before he spun and pointed his wand.
He stared at the thing with his mouth agape.
It towered over him. The closest person he had ever seen that tall had been Professor Dumbledore. There was no way that he could beat this thing. It radiated darkness.
"Damn," he said. "I'm dead and I haven't done anything yet." His eyes traveled over the thing as it began to take a vague shape. No features were visible, but that made it all the more intimidating.
Harry dropped his arm to his side as the thing began to glide toward him. He jumped when he heard it speak.
"You wish to dispose of the False Serpent?" It's voice was almost to quiet to hear and sounded as if it had been destroyed by screaming for to long.
He stared, dumstruck at the creature. Slowly the boy registered that it was talking to him.
"What are you? A monster sent by Voldemort? Come to kill me, have you? Well I wont go quietly," he said in a bold yer shaky voice.
It seemed to Harry that the silence from the creature was like someone cocking there head to the side in curiosity.
"A monster? Yes. Sent by the False One? No."
Harry gathered his courage and glared at it. "Then why are you here?"
He had the same feeling of curiosity as before. "You seek vengance?"
"That has nothing to do with what I asked! Why are you here?"
"I have...felt...your...need...and wish to offer you a...proposition."
He stared inceduously at it for a moment. "I will take no offer from you! I can feel the darkness radiating from you," he angrily said.
"What is wrong with darkness?"
"It's evil," he exclaimed.
"Do you sense any form of evility within me? Do I feel the same as the...Dark Lord?"
Harry frowned at it. "It doesn't matter. I am a Light Wizard."
"You are disgusted with the prejudices of the Wizard World, yet you share some of the same. How...illogical."
"I-I-," the boy-who-lived stuttered.
"Have no excuse. Now, you seek vengence?"
"Yes," he said tiredly.
"You wish to be taught?"
"Yes," he repeated.
"What lengths," the shadow demanded, "are you willing to go to?"
His head lowered. "Almost anything," came the soft reply.
"Will you turn...dark?"
Harry stared at the floor. It went against everything he believed in...but it would give him a chance.
"Now...open your heart to darkness."
A feeble twinge of protest stuck him before he complied.
His arms began to raise of their own accord and that primal fear that man has had for millenia rose inside of him. That fear of the dark that has struck terror of the unknown into countless hearts. As his hands began to sink into the shadow he now understood that fear. Man didn't fear the dark...but what lurked there.
When his arms were parallel to the floor and his hands were in the darkness he felt it pull him in. His arms were no longer visible past the elbow.
Instinct took over him as the monster began to speak again.
"What do you have?"
"The Will," he heard his voice reply.
"What do you see?"
"I see the Need," his voice came again.
"What do you lack?"
"I lack...I lack the Knowledge."
"What is your goal?"
"My goal? My goal is...to kill," said his voice with confusion, "My goal is...to protect...My goal is to...avenge."
"Do you accept the Dark?"
"...Yes..."
Suddenly a peircing pain was felt above his wrists. He screamed in agony as something dug through the skin and bone. It felt as if millions of tiny mouths were chewing a hole through him. The nerves in his arms began to burn outward from the darkness. They would feel as if they were in a bonfire then slowly flickered in painful twinges before going numb.
After an eternity of flames his arms were entirely numb. Something began to push his arms out and he realized that his hands still had feeling in them. Harry collapsed in exhaustion and lay staring at the thing near his feet.
Dizzily he struggled to pull his arms to where he could see them. A sizeable chunk of his arm was gone about an inch below his wrists. He now had a cylander shaped hole that was filled with pure darkess.
He saw the thing move toward him and tried to stand. "Be strong, Young One," he vaguely heard, "for this is but the first step upon a long road."
Harry succeded in sitting up by the time that it reached his feet. He saw a long tendril come from the behind it. The tenticle like thing swung in an arc and peirced both legs. His face screwed up in the hellish agony.
He reached down and touched the thing that he guessed was a tail. It now connected his legs above the ankle.
The familiar fire began to travel upwards. As it reached his knees he felt it slow. After a moment he felt normal again. It was like nothing had happened.
He stood up and saw that the shadow monster was gone. When he turned in a circle to view his room he felt the bones in his arms and legs begin to grow cold. When he could no longer stand it they shattered and he fell. He screamed in pure agony. So loud it was that it shattered every glass object in the room and his own ears bleed from the strain.
As he fell the unearthly scream stopped when mercifull oblivion came from stiking his head on old wobbly desk.
AN: I'm not a good writer. It's hard for me to express what I see in words, but I believe that I'm getting better.