5 Hours earlier
Darius was covered entirely in burnt soot and his face looked like a black mass with wedges in place of his nose, eyes and mouth. It slowly grew in size up to 7 feet tall and darkness began spreading from all around it. Meanwhile Harry was trying hard from being overwhelmed by his fearsome memories. It was like a pack of dementors had surrounded him. His rider form would protect him but he couldn't afford a lapse in concentration now enough to transform or to use its power sufficiently in his wizard form. He slowly tip toed back and held his head in his hands the screams of his past blaring out everything else. Slowly he tried to concentrate at his present . The thing that was Darius, the shadow master, was slowly gliding towards him and emitting hissing noises. USE ME!! His mental self ordered. No not now Harry thought. We both will perish if you do not allow me to take over!! It spoke again. The temptation to release his ultimate form was very strong but Harry held it at bay. He could do this he thought but he had to somehow overcome his past. "Allow Me," said his mental self quietly and slowly his mind started developing more advanced occlumency shields. Suddenly Harry could no longer hear the voices but he suddenly noticed the creature in front of him. Harry was tossed back with a powerful telekinetic wave. He tried to regain his posture but was thrown sidewise again. He quickly stepped away from the creature but again found himself lifted into the air with some invisible energy and brought in front of his enemy. The thing looked into his eyes, face almost touching before it roared and Harry saw pointed rows of teeth and a slimy tongue. Harry slowly accessed his rider strength and allowed a bit of its power to seep into his wand. When he collected enough energy he gave a grim smile and muttered a spell. Immediately his wand emitted a powerful spell, which hit the creature's chest and threw it back leaving a gaping hole in its chest. Harry fell down on to the ground and started throwing elemental level spells. The creature howled as more beams hit it but suddenly all its wounds filled up like a viscous fluid and it roared. Harry could feel the powerful magics the creature controlled and shielded himself from its effects. "Dad I need your help" Harry whispered and raised his wand which began to glow sun bright. The light burnt the creature and it moved back into the shadows being averted to light. "Patronus maxima" shouted Harry as a bright stag burst out of his wand. The dark creature sensed the magic and cried even more. Time to finish you Harry thought as he infused his magical strength into his patronus. His patronus grew bigger and suddenly transformed like a animagus into harry's father. It looked just like Harry and Harry smiled at his likeness. The patronus James Potter smiled back and both grasped each others hands. Suddenly where there were two beings there was only one . Harry fused with his Patronus raised his arms and said 'UNFOLD!!' A huge wave of patronus light emitted from Harry in waves. As each wave slammed into the creature, pieces of darkness tore out of its body and disappeared one by one. At the end of it the lights were restored and in front stood the Human form of Darius as if he had woken from a dream and looking at the angel like form of Harry.
"You have lost Darius, Shadow shade" said Harry in an ethereal voice. Darius looked at Harry as the glow from his body began fading. The now normal Harry slowly walked towards Darius. Darius looked at Harry and said "I have not lost yet. I have already gathered enough dark energy from across my shadow spell". Slowly his palms started glowing black. Harry narrowed his eyes and raised his wand . Darius suddenly zoomed towards him at lightning speed breaking through Harry's personal shield. Harry raised his magical energies and both magics slammed each other in a colossal force and both were thrown back. Harry suddenly pulled out his sword from behind him. The scabbard sheath disappeared and Harry slammed the sword through the air as if striking a powerful enemy down. The magical sword sang in its power and emitted a wave of destructive energy right towards Darius. Darius eyes bugged out at seeing the powerful Magic and he again apparated through the wards momentarily. The energy not finding its target hit the house instead and gave away with an almighty explosion and the outer wall of the house was reduced to splinters. But the energy continued and demolished part of another house also. Harry fell down at his knees at seeing what he had inadvertently done. He raised himself in anger his sword disappearing and located Darius and threw powerful spells. The spells hit a dark shield which Darius conjured and he suddenly appeared behind Harry and got him in bear hug. He then cried out some ancient spells and a powerful lightning bolt hit Harry. Harry cried out in pain . It was worse than the cruciatus. Again Darius cried out the spell and it hit Harry . Darius also felt a bit of the lightning but his shadow magic protected him. The third time Darius did this Harry feel down on the ground, his body scalded and his robes burnt.Darius raised his index finger and glowing green chains wrapped around Harry effectively binding him tightly. He weakly opened his eyes and saw Darius standing proudly.
"You have lost Potter. I have won as I had vowed to my father. I had to train a lot ,you know, to achieve this kind of power. Then it was difficult but I painstakingly studied you, the mightiest auror in the ministry, an X level wizard. O yes Potter I know what you are. For every of your move I had to develop a counter move. This had taken me 5 further years of study and research. But it was all worth it."
Harry just groaned a bit as his body was aching terribly and the chain made it difficult to breathe. He looked at Darius and gave a small sigh.
"What's that Potter. I didn't hear you. Was that an asking of mercy?"
Potter just looked at him and closed his eyes giving a small smile. Darius looked at his smile and became infuriated. "What's so funny Potter?"
"Just imagining your face when you will be towed to Azkaban tomorrow. Do you think you are the first one to challenge me and think you have won? Or even the hundredth? How many times had your father thought the same before he was defeated by a baby and later again? You are nothing Darius just a wannabe who thought he would show some tricks and think he was the master of Magic. You thought by defeating 'the Harry Potter' you would feel worthy. Well I hate to burst your bubble but I don't see a powerful wizard but a five year old scared child."
Darius was seething with anger. He gestured his hand up and Harry was pain fully pulled up and brought to him. "You dare mock me, the most powerful wizard in the world, the master of Shadows!!" Harry continued to smile. 'Darius growled' "What are you hiding potter? Are you expecting reinforcements? Perhaps some secret magic at work? What is it?? And he hit Potter on the face. Potter just continued as he was. " No matter I will just extract it from your mind" Harry apparently hadn't thought of that and looked panicked. Darius looked into his eyes and broke through his defensive shields in his mind like they were small twigs. He saw a closed door hiding the information. He wretched the door open …..and made the biggest mistake of his life as he found himself face to face with red hot angry images which pulled him in. He cried against the onslaught on his mind but it was too late. In attempting to legilimens Harry he had opened himself to a mind attack .
"Look into my eyes" Harry intoned channelling the rider's power through Darius mind directly to his soul. "Feel the bloods of the innocents you and your father spilled" as Darius saw a flurry of images one more terrible than the next "feel their PAIN.their sorrow" and Darius eyes burnt out and he fell into a magical coma.
Harry got up, the chain binding him melting away and the sun slowly rising. The anti apparation wards also disappeared. And Harry stretched to his full height. In one shoulder he lifted the unconscious body of Darius and apparated to the Ministry of Magic.
As he went through the small tube he thought- "I've won once again but Darius was a worth opponent". Also his rider senses had sensed something- Darius has never killed.