PROLOGUE

000

Disclaimer: I do not own HP, SPN, and some other fandom in this story for they all belong to their true owners. I only borrow them for my own entertainment, not for some kind of profit.

Warnings: Yaoi, OOC, alternate reality, time/dimensional travel, canon divergence, violence, torture, blood, death, bashings, Harrison-is-Harry, Cambion-Harrison, possessive-Castiel, protective-Castiel, sticky, Mpreg, and maybe more later.

Main pairing; Castiel x Harrison Baskerville (HP)

000

A young man with raven black hair and green eyes was taking a deep breath to calm his racing heart as he sank gratefully into his chair. He had spent the past five hours battling to save the life of a seven years old girl who had been in serious car accident. Her parents had walked away with small cuts and light bruises each, that was because the back of the car, where the little girl had been seating, had taken the full force of the impact. Thankfully, with the covert use of his abilities, he was able to heal her enough to pull her out from danger state, thus raising her chance of surviving.

A small smile graced his features when he remembered the happiness that had radiated from the parents after he informed them that the operation had been successful and their daughter would live.

The sound of flapping wings startled the young man from his relaxed state; he straightened a bit in his seat and looked towards one of the windows. He raised his eyebrow when he saw a raven, one of my spies, perched on the windowsill. The avian was looking directly at his eyes as if it was trying to tell him something. With a flick of his wrist, the window opened up and the raven flew inside.

"What do you have for me?" he asked the raven.

He tilted his head so his green eyes would meet with the raven's red ones. From there, he could view the message that the raven wanted to tell him and after he got what it, he pulled out from the raven's mind.

"Thank you," he told the raven. "You can go now."

The raven bowed its head slightly before its form became insubstantial, a liquid that was known as blood, that disappeared when touched the desk.

The young man stood up from his chair and swapped his doctor coat for his trademark black hooded coat and exited the office. As he walked down the hospital corridor, his colleagues greeted him with bright smiles and polite nods. He only stopped however by one of the interns under his guidance and that was because he sought his knowledge.

"Dr. Baskerville," the intern called him. "I'm sorry to disturb you, but can I have your attention for a moment? I need your help regarding this patient."

She handed him the chart and he carefully looked it over. After reading the chart for a minute or two, he gave it back to the intern and told her what she needed to do. "Go to the CT room and give the patient a full scan. From what I read there, there is something wrong with her head." he fixed his glasses. "... After that, alerts Dr. William, he will assist you from there."

"I'll do that immediately." The intern nodded her head in thank you gesture before hurrying away to do as been advised to her.

The young man smiled fondly at the retreating form of the intern before turning around to continue his walk to the parking garage. He quickly went to the spot where he had parked his black Kawasaki ninja and climbed onto it after putting the helmet on. After made sure everything was good, he switched on the engine and sped off from the hospital. He did not go to where he lived; he went to the place where his raven servant had informed him as the place that abomination being hiding.

That hiding place was in a thickly wooded forest. It was ominous enough on any other night, but the knowledge of what was luring inside made it a hundred times worse. The creepy setting did not made the young man to go back home. So, with narrowed eyes, he stepped into the forest and followed the route the information had told him. It did not take him long before he came to a congealing puddle of blood and he knew that abomination was not too far.

Even though his guard had been up, he was surprised when something enormous tore itself from the shadow and leapt towards him. Recovering from his surprise, the young man rolled out of the way of the large best and came up in a crouch position. From that position he got a good look at the creature that had decided to attack him.

It was an unnatural beast, shaped like a dog but as far from one as it could get when it came to mannerisms. From the look of it, the dog, once, had been someone's pet, though it was long dead. Which meant, this beast was an Inugami, a Japanese's spirit that took a form of a dog and born from using a common pet dog as a sacrifice in a dark ritual. The result of that gruesome dark ritual was a powerful dark creature that drove by anger and revenge for misdeeds done towards their masters. The only way to stop this particular beast was with stopping their masters; made them realized their faults or killed them.

After narrowly avoiding another attack, the young man took off to the direction where he could sense a faint trail of dark magic. Hopefully it would lead him to this beast's master.

The moment he started running, the beast chased after him trough the tress at frightening speed. When he took a glance back over his shoulder, it was to find the beast was barely a foot away, snapping at his heels. He stumbled slightly when he needed to duck in order to avoid the sharp claws that swiped towards his head. The beast used his misstep to draw closer, but the young man momentarily immobilized the beast with a roundhouse kick right to the stomach that sent it crashing into the bushes.

He was grateful when he finally arrived at the small cottage in a clearing. This would be a very beautiful scene to see with the almost ethereal setting and the full moon bathing the clearing with its silvery glow, if not for the snarling beast that quickly catching up with him and the dark magic that pouring out from the cottage, killing plants within fifty feet radius of it.

With a grimace, the young man approached the cottage; he managed to slip through the front door and closed it just as the Inugami burst into the clearing. He then followed the trail of dark magic until he came to the room where the dark magic most potent. He was slightly taken aback when he saw what kind of person that had become the Inugami's master. The master was a young girl; she did not look much older than sixteen years old.

Steeling himself, for he needed to stop the girl so the innocents could not be killed again by the beast, the young man went into the room and crossed his arms. "The way I see it here, we have two choices..." the girl was startled with his sudden appearance and he did not care. "You can stop this madness and destroy your Inugami, or, I will do it for you, which meant it will not end well for you."

The girl leapt to her feet and slowly backed away from the young man. "Who are you?" asked the girl. "How do you get past Kuro?" she yelled in disbelief.

"... I assume that is your Inugami's name," he whispered softly.

"How did you..."

"How did I know what he really is? What else that hulking beast could be? As for how I could get past it... well, I am pretty fast runner." He shrugged. "So, what will be? Will you stop it in your own free will or I need to do it myself."

"I won't do it!" the girl snapped. "My Inugami still has some works to do!"

"And what that will be?" asked the young man with narrowed eyes.

An insane girl spread across the girl's face. "My Inugami is going to kill every last person who has ever made my life hell; the bullies, who have teased me for being so skinny, too dorky, and too smart... now you're in the list!"

"Oh, I am absolutely terrified..." he said sarcastically. "So, let me get this straight... you have set a dangerous creature into the human world just because you want to get revenge on a few bullies? What will you do when all of these bullies are taken care of?"

"They'll never be taken care of! There are too many!"

"... Right, you are insane..." he mumbled softly.

Before the girl could response, there was a tremendous crash from the main room and then the Inugami came barrelling into the room.

"Kill him! Kill him!" the girl screamed in anger. "He wants to kill me! Get him before he can hurt me!"

The Inugami leapt towards the young man, pinning him under its heavy weight, then with a ferocious snarl, it bit down his neck. The skin tore easily under the razor sharp teeth and blood gushing freely from the wound, but the young man did not flinch, he simply raised his right hand and pointed two of his fingers at the Inugami that trying it hardest tearing his neck into pieces. Twin spikes, formed from his own blood, stabbed the Inugami in the side, making it yelped in pain and jumped away from the young man. He took the time to climb back to his feet and then with a flick of his wrist, he created an impenetrable cage made from the blood to make sure the Inugami could not attack him again.

The young man touched his bleeding neck and grimaced in distaste before turned his cold emerald eyes to the trembling girl.

"Please," she whimpered, recognizing the deadly glint in the young man's eyes. "Leave me alone... I... I'm sorry... I'll stop Kuro..."

The young man's eyes started to glow menacingly. "You are lying..."

"I'm begging you. Have mercy."

"... Do you stop your Inugami when your victims beg for their lives?" he asked coldly. "You do not deserve to have mercy."

He ignored the girl's terrified babbling as he touched the wounds on his neck once more and flicked his hand to the side. When he did that, the fresh blood that painted his fingers red melded together into a dagger. He spared the girl one last cold look before swung his arm in a wide arc, the dagger cut through the air and right through the girl's jugular. She was dead in a second.

Black tattoos started to appear across her body when this happened. That tattoos were the deal that she had made with a demon to receive the power she possessed.

With the source of its power gone, the Inugami started howling and trashing wildly in its cage. This continued for two minutes before it dropped to the ground, unmoving. Not long after, the creature was dead, and a ball of glowing blue light rose from its dead body and shot into the sky. After it disappeared into the sky, the young man spun on his heel and teleported from that place in a swirl of blood.

000

Several days after getting rid of that Inugami along with its crazy master, things had returned back to normal and he could work in peace once more. Or at least as peaceful as one could be when working in a hospital. He had just finished up yet another gruelling surgery; this time was an elderly woman who had been attacked by her neighbour dog.

When he was in the bathroom that connected to his office, the young man started at his face, especially to his eyes. They had changed a lot; there were no traces of hurt and betrayal in them. They had disappeared completely from there.

It had been five years since he made a decision to leave Britain and changed his name from Harry Potter to Harrison Baskerville. Now he was a young, incredibly talented doctor who worked for a private hospital in Lake County, Illinois.

Thanked to his creature heritage, his appearance too had changed drastically. He was sure no one from his past life would recognize him if they saw him. The tanned skin he had obtained from spending countless hours in the sun training as a Seeker now had become flawless white skin, unmarred by scars or any sort blemishes; his eyes sight had improved, eliminating the need for glasses (he used glasses for fashion not because his eyes were bad), and he now shorter and leaner, though not unhealthily so, giving him an almost fey-like appearance.

The most noticeable change however was the appearance of a pair of inky black angel wings and a set of strange runes tattooed on his back. He had a feeling the tattoos meant something important, but after weeks and nothing happened, he had let the worry to fade away.

At first he was confused about the creature gene that he inherited; there was nothing particular in his appearance that could help him. It was only after he came across a demon, he found out that he was a cambion; an offspring of a high-class demon and a human. He then found out from his father's dairy that James Potter was not a human in the first place, but rather one of Lucifer's Archdemons or Devils.

After discovering his heritage, he feared that his soul would become tainted and evil like the demon that he had killed back then. However, he then telling himself that as long he followed God's laws and did nothing sinful in His eyes, he would be different from demons.

If someone from his past life recognized him and then realized what he was, there was no doubt they would alert the authorities to eliminate him. The main reason why he left his former world those years ago was because a rumour had been accumulating that he was some kind of dangerous creature from the change in his aura; it had changed from light to dark. It was only after he heard the talks about locking him in the Azkaban; he went to leave everything behind.

He had asked the goblins to transfer his money and assets to Gringotts branch in America under the name of Harrison Baskerville, and then hopped into the next flight to America and left Britain for good.

Shaking himself from those memories, he tossed the used paper towel into the trash bin and left the bathroom and then the office. He was hurrying down the halls, eager to get home when he collided with a decently sized, solid body, and because he was shorter and lighter than an average person, he fell backwards. Thankfully before he hit the floor, a pair of hands grabbed him on the waist, halting his fall.

"I am so sorry..." He said to the owner of the hands on his waist.

"Don't worry about it," a gruff, amused voice said. "I should've been looking where I was going."

He looked up and took in the appearance of the owner of that voice. He was several inches taller than him (but honestly, who was not?) with a head of short, windblown black hair and tanned skin. He was dressed in a white button-up shirt, a black suit, and a dark blue tie with a beige trench coat thrown over the ensemble.

"Thank you for saving me from what would have no doubt a very painful and embarrassing fall, mister..."

"Novak..." the man supplied. "Jimmy Novak... and it was no trouble at all. Like I said, I should've been looking where I was going."

"It is nice to meet you, Mister Novak. I am Harrison Baskerville..." he said, reaching out to shake the man's hand.

Unknown to either of them, the wheel of destiny had turned towards an entirely different direction. The question was; would it end up in a better place or worse?

000

Tbc...

000

Hello! Nice to see you again, my fans from SPN x HP crossover community! I come back from my SPN x HP crossover hiatus and with my new version of the Blood Sorcerer! Not only that, I too will try to update my other stories, just please wait for it all right

To make sure everyone realize... I stop watching SPN after season 5 and only know a little about the future seasons (6 until 11)... so, I am sorry if Red Moon: The Blood Sorcerer will not touch everything from the future seasons. The Darkness still exist but with my own headcanon, not from SPN canon, sorry!