Hello People! I hope this story is well received and any reviews are very welcome as long as any criticism is constructive and not hurtful. I am following the first season of the anime, the one that has the Gehenna gate at the end. (I cant find any other at the moment.) This is a Rin/Harry story, but it isn't really the main focus at the moment. I did create an OC demon lord but he is only a plot device and dies off long before the story starts, don't worry.

I don't own Harry potter or Blue Exorcist.

Manipulative!Dumbledore, MollyRonGinnyHermione!Bashing

"Demon telepathy"

'Harry's thoughts'

"Animal speech"

When Harry and Voldemort's wands connected, Harry thought he was going to die, when the ghosts came, he let himself hope.

"Harry," His mother had circled into his view, an urgent look on her translucent face. "There is so much I wish I could tell you, so much you need to know, but we have no time. After what happens, put on a glamor, and take Mr. Diggory's body back. Don't tell anyone what really happened here, not the minister, not your friends, and most certainly not Dumbledore. As soon as you are able to, go to Gringotts and ask for the Potter account manager. For now, I need you to remove the cap from the tooth." Harry removed one hand from his wand and shakily brought it to the choker around his neck, thinking back to how he got it.

Flashback

It was the night before the third task and Harry was not freaking out. He should be, but wasn't. Why? His attention was on the package on his bed. Opening it, he found a simple black choker held together with a silver clasp on the back. Written in white words upon it in latin, roughly translated to holder of ancestry, protected with the spirit of the mother. Hanging on it was the tooth of something like an african leopard in size. It had a cap covering the tooth which was silver with gold highlights and a bright green gem on it, the gem was the same color as his eyes.

It also had a note attached.

Dear Hadrian,

This holds something very important to you. If you ever find yourself in a life or death situation remove the cap from the tooth and it will give that back, just be sure to put a glamor over the… new additions before you go to see other humans.

Love,

Lily

He would normally be more suspicious of packages appearing on his bed at three in the morning, but when he touched the capped tooth it felt like something… familiar. Like an old friend, so before he knew what he was doing, he had put the choker on and fell asleep.

End

He had gotten a few odd looks throughout the day for it, but he never took it off. Shaking off his thoughts and quickly pulled the cap off.

The feeling he got when the cap came off was, in one word, euforic. It felt like he was greeting an old friend, or waking up from an amazing night's sleep but times 10. He barely noticed the sound of his shirt ripping open within the haze. He felt the shadows gather around him and bend to his will, and the connection between his and Voldemort's wand break. They both dropped the ground and Harry followed his instinct, the shadows hid his body as he leapt forward and attacked the Dark Lord, getting a scratch across his face before the man quickly disapparated away, his Death Eaters quickly following when they realized their spells couldn't reach him through the shadows. When he finally regained his own thought processes, he was alone in the graveyard with only his mother's ghost. He jumped when he felt something brush against his arm and looked back, seeing two large feathery wings.

"Don't worry Hadrian, if you put the cap back on the tooth, it will go away. The tail however, will not."

Looking down he saw he did indeed have a tail. He had a mini freakout moment before replacing the cap. He felt the wings recede and his teeth become smaller as well. Turning to his mother he asked,

"What… what am I?"

She gave him a small smile. "I don't have the time to go into that now, but I left a letter for you at Gringotts before my death, it should explain everything. Now put on a glamor to hide your teeth ears and tail, as well and the rip in your shirt. Go back, and be safe." With a kiss on his head she disappeared. Harry quietly did as he was told walked over to Cedric's body and summoned the Cup. He had a lot of thinking to do.

The next few hours were very exhausting to the young wizard, and he almost slipped and told Dumbledore what happened many times, and he was very surprised by the false Moody, but eventually all the drama calmed down and Harry got some much needed sleep. The final days of the school year and the trip back to the muggle world went by quickly and Harry sat in the back of Vernon's car contemplating Rita's animagus form (as well as wondering if he could do it) and feeling pleased with giving the twins his tournament earnings.

"Uncle Vernon." Grunt. "If you drop me off at the Leaky Cauldron, I promise you won't see me until, at the earliest, the end of the summer." The man gave him a look, but turned the car towards London.

He got a room in the leaky cauldron (surprising what removing your glasses and putting on a hat does) and set his stuff in it before heading off to Gringotts. Entering the white building- he could see a little without glasses, but had to put them back on inside- he walked up to a teller that looked to be doing less that the others. After a few minutes of waiting, and a few goblin sneers, he was acknowledged.

"Yes?" The goblin… asked.

"I need to see the Potter account manager sir." He told him quickly. From what he read on goblins, they prefer when you get to the point quickly.

The goblin narrowed his eyes at Harry before nodding sharply. "Ironmace," he called. "take Heir Potter to Sharptalon please."

Walking down the hall was awkward, to say the least, so Harry occupied his time with looking at the other doors. They each had a name and he recognized a few like Parkinson, Greengrass, Malfoy, Bones, and Longbottom. Finally they reached a door labeled 'Potter'. Ironmace knocked on the door and opened it when called to 'enter'.

"Heir Potter is here for you, Sharptalon." He stated.

"Let him in."

Ironmace stepped aside letting Harry in. "Thank you." the human stated, bowing his head slightly before turning to Sharptalon, not seeing to raised eyebrow he received.

"You may go, Ironmace. Sit, Heir Potter." the other goblin stated. Harry sat down in the surprisingly comfortable leather chair, feeling a wave of magic wash over him and took in the goblin before him. He was older than others of his species he had seen, noticeable lines in his face but his eyes proved he was no less sharp. "It is nice to see you finally decided to come yourself instead of sending a proxy, Heir Potter."

Harry froze, staring at the old being in front of him. "I never sent anyone in my place. I never even received anything from Gringotts before this." He stated slowly. He knew that foreboding feeling he had this morning was going to be big.

Sharptalon raised an eyebrow. "Whenever we sent a letter out to you, it was always sent back with your proxy as Dumbledore and a drop of your blood. Care to explain how that is possible if you've never received the letters?"

If possible, Harry's muscles became even more tense. "I-I…" he choked slightly. "My relatives beat me and… and would c-collect th-the blood and I didn't know why but they did and.. and." He cut himself off, squeezing his eyes tight and putting a hand over his mouth. He refused to cry. He refused.

After a few minutes, Harry calmed down enough to unravel himself from the ball he had created and take a few deep breaths. "sorry" he mumbled.

"It is… of no consequence, Heir Potter. We shall see to it that this grievance is corrected for the future." Oh, he looked pissed. "What Brings you here today?"

"At the end of last year, my mother's ghost came to me due to… certain circumstances and told me to come here." He removed the glamor on his person, revealing elongated teeth and ears, as well as a tail swishing behind him slowly.

"Ah." Sharptalon pulled a letter from one of the drawers of his desk. "You're here for this then."

With shaking hands, Harry took the letter, opened it and began to read.

Dear my sweet Hadrian,

If you are reading this, then that means I am dead. I am so, so sorry my sweet baby. I wish I could be there for you. We wish we could be there for you, but it seems Voldemort got to us first. Cub(1), there is so much I wish I could tell you, but I will stick to the reason for this letter. You see, we are not human. Centuries ago, in the beginning of humanity a group of demons were fighting. One knew there was a chance he could die, and he knew he had to do something, so in an effort to keep his line alive he had a child with a human. The thing about his powers was the human has to be exceptionally powerful to gain them, so he died and the child had no demonic heritage.

Fast forward a few centuries and you get me. Having magic made me strong, but I still wasn't strong enough to fully inherit the powers, only pieces on my 16th birthday. I gained this information then too. When James found out he was surprisingly ok with it, he had changed so much from the bully he was in school. When you were born, we were not in St. Mungo's. We did it at Gringotts incase you were different and you were. Harry, you were wreathed in smoke and had wings and and a tail. You had dull claws and sharp teeth and when you opened your eyes they were glowing green. But you didn't scare us. In Fact, you were quite adorable.

We had your powers sealed by the goblins. It was the only way to protect you. In my personal demon vault, there is a choker with an animal tooth on it. The tooth has a sheath like a mini dagger and it holds your powers. Please do not unsheath the claw unless you absolutely have to. When you've done it once, you will never go back to fully human again. I am not saying to reject your powers and ancestry, but demons will come after you more if you do.(2)

I am an Exorcist, Senior class. I trained at the british branch and even have a familiar, a little dwarf epauletted fruit bat called daffodil. Or Fodi for short. She was so close to me and i have no doubt she will take to you as well.

Now onto… less pleasant topics. I have reason to believe Dumbledore isn't all he seems. Do not trust him. Look into your inheritance. As much as I hate to say it, any friends you have could be suspect to less than friendly things with you. I hope they are true friends but they may not. I am sorry my sweet child. If Fodi has not come to you yet then he has been blocking her from you. There is a prophecy upon either you or Neville Longbottom, as you both fit the requirements, and it is possible it has already been completed. You can tell if it had.

The one with the power to vanquish the dark lord approaches… born to those who have thrice defied him, born as the seventh month dies… the dark lord will mark him as his equal and he will have power the dark lord knows not… the one with the power to vanquish the dark lord approaches, born as the seventh month dies.

I only hope it has been long completed by the time you read this. Please take an inheritance test my son. I hope you are with Sirius, your godfather, but knowing Dumbledore he might have gotten him out of the way. Remus wouldn't have been able to attain custody as he is a werewolf. Both me and your father love you so, so much. Cub, pup, fawn, my little one. We love you.

With all of my love

Lily Maree Evans Potter

There were tear tracks on Harry's face and determination in his eyes as he looked at Sharptalon. It was obvious this was written incase he didn't receive the choker before hand, but it was still informative. "Is there a way for me to take an inheritance test please?"

The old goblin nodded and pulled out a piece of paper from one of the many drawers in his desk. "This paper is specially treated with a potion made for learning your inheritance." He slid the paper across the desk and pulled out a dagger, handing it over. "Cut your finger and place a few drops of blood on the sheet and it will show your inheritance."

Harry did so, not even wincing in pain. After a few drops of blood fell onto the paper, it soaked on and words started appearing, the wound sealing as it does so. He hands the dagger back and looks at the paper.

Hadrian James Potter

Family

James Charlus Potter- Father (deceased)

Lily Maree Evans Potter- Mother (deceased)

Petunia Edith Evans Dursley- Aunt

Dudley Vernon Dursley- Cousin

Sirius Orion Black- Godfather

Alice Elinor Emitt Longbottom- Godmother (coma)

Heirships

Potter- Paternal

900,800,000g

Gryffindor- Paternal

100,000,000,000g

Evans- Maternal

500,000g

Le'Fay- Maternal

100,800,000,000,000,000g

Black- Godfather

470,800,000g

Emrys- By Magic

150,700,000,000,000,000g

Slytherin- By Conquest

110,000,000,000g

Abilities/inheritance(blocks)

Gold core- 90% blocked (APWBD)

(To see core color rankings, ask a goblin)

Beast Speech- 99% blocked (snake speech active) (APWBD)

Shadow Demon- 90% blocked, minor shadow control active(power transfer) (LMEP(3) and Healer Daggerstitch)

Removal of blocks recommended

Potions and spells

Multiple obliviates- APWBD, MAPW, HJG

Loyalty potion to: Albus Dumbledore, Ron Weasley, Hermione Granger

Minor love potion to: Ginny Weasley

Personality alteration potion

Transfer

100,000 monthly to Albus Dumbledore (14 years)

10,000 monthly to The Dursley account (14 years)

10,000 monthly to Ron Weasley (4 years)

10,000 monthly to Hermione Granger (4 years)

10,000 monthly to Molly Weasley (4 years)

5,000 monthly to Order of the Phoenix (2 years)

Horcrux detected. Remove immediately

Harry took a deep steadying breath, unknowingly dispersing the thick shadows beginning to take form around him and handed the paper to Sharptalon. The goblin gained a very pissed off look when he finished reading.

"We shall make sure all money taken from your account is retu-"

"Wait." he stopped and looked at Heir Potter. "I'm planning on heading to hogwarts one more year before leaving, just so I can learn how to use a weapon and brush up on my Japanese. " Harry blushed slightly at the raised eyebrow he received at that. "The Dursleys always called me a freak and said the japanese were a 'freaky group of people who have no place with the normal folk.' So in a bit of rebellion I, uh… learned Japanese." He cleared his throat. "Anyway! If you take the money back now, they will become suspicious, so leave it for now. At least until I leave the country."

Sharptalon looked impressed. "Very well, Heir Potter. We can perform a ritual that will remove the blocks and potions, and your demonic powers have already been partially unlocked. As long as you don't break the tooth, you will only be half demon while it is capped. A separate one will be needed for the Horcrux however. A Horcrux is a piece of another person's soul. If it does indeed belong to the Dark Lord then he must have more, because that is the only way a soul would be unstable enough to break apart like that. The first ritual would be 30 galleons while the horcrux ritual would be 50, mainly because of its complexity."

The sealed demon nodded. "I'll do it. What about the heirships?"

"you can gain those after the ritual. I can also give you a few recommendations for places to go for better clothes and to fix your body and eyesight."

"When can we begin?"

The goblin turned to a gold-orange glowing stone and placed his hand on it, speaking in gobbledygook for a minute before turning back to Harry.

"Right now."

End of chapter 1

(1) His mother and Remus called him Cub as it was a demon and werewolf thing. Sirius called him Pup and James called him Fawn.

(2) To clear up confusion, the letter was written, and then she wrote a small note incase he needed the choker before he read the letter

(3) It's Lily's initials