A/N hey everyone i just got the idea for this story while i was reading a harrypotter fanfic and watching a Inuyasha amv on Youtube but this story has nothing to do with either,the entire storyline belongs to me!.

IMPORTANT----------- The name Kyuasha is pronounced Ky-asha but his nickname is Kyu its like Ryu but Ky instead of Ry

After Inuyasha and Sesshoumaru's long lost brother was found Naraku was destroyed the group escapes to the future but now with the Threat of voldemort this brother must help the wizarding community with the threat.

Disclaimer:I do not own Harry Potter OR Inuyasha!

Harry Potter And The Fang of a Demon.

Prolouge

Kyuasha is a Hanyou like his Half Brother Inuyasha, and at first Sesshoumaru hated him as much as he did Inuyasha, but when he found out that Kyuasha should be full demon but was turned into a Half-Demon by a monk due to his strong power, he took him in and agreed not to fight with Inuyasha for his sake. Kyuasha has the same white hair as his brothers he also has Black dog ears on his head like Inuyasha, he even wore similer clothing to Inuyasha except he wore the cloth of The Water rat which was blue instead of red and was also more resistant, and now they were currently fighting Naraku.

Kyuasha watched as Naraku drove Inuyasha and Sesshoumaru into the ground leaving them with mortal wounds.Kagome stared in horror at Inuyasha's bleeding form.Rin cryed as her Lord Sesshoumaru wasn't moving.

Kyuasha ran forward from where he had been bashed into a cliff to the two and yelled "Brothers! you must get up how else are we going to beat him!" He pushed the rubble off of Sesshoumaru and noticed he was dead, holding off tears he moved to Inuyasha and found the samething but then went back to Sesshoumaru and pulled the Tenseiga from his belt and bit back a scream as the sword shocked him as it tested him to see if he was a Son of the Great Dog lord.Kyuasha watched as the sword pulsed and showed him the messangers of the next world,He swong the Tenseiga hopeing to revive his brothers.

Dropping the Tenseiga next to his brother after not seeing them move Kyuasha moved toward Naraku his head bent downward "Naraku you've taken from me my only Family left in the world, sure they fought but they came together for me they wanted us to be a family and now you've taken them from me...I'll never forgive you" he called as he raised his head showing blood-red eyes he then stretched out his hand and a hole appeared in the ground and out shot the sword of the Netherlands Somonga (im not sure how to spell it so if you know could you please tell me)

At first Somonga attempted to take over Kyuasha's soul but the anger in his heart banshed the Dark Soul from Somonga turning it into a uncursed sword.

Borrowing the power from the Sword Kyuasha turned into a Full demon then called to Naraku "For the pain you have caused me you will die this day!" before turning into his True Form of a giant Phantom Dog and began to attack Naraku.

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Inuyasha and Sesshoumaru sat up to see Kagome and Rin running toward them. Kagome and Rin hugged their respective Demon or Half demon who returned the hug (yes Sesshoumaru hugged Rin he has changed since Kyuasha showed up he doesn't hate humans anymore so i guess you could say he will be totally out of character in this story) They were then interupted by a deafening roar. Sesshoumaru stared in shock at the Dog before him "Is...Is the Kyu?" Rin looked over at the Demon fighting Naraku before saying "Yes Lord Sesshoumaru he summoned Somonga from the Netherworld and somehow used its power to turn into a Full-Demon then into a Dog"

Inuyasha whirled around to look at Rin "WHAT! he summoned Somonga! But the sword can't be wielded by a Hanyou! It would control him!" he said in shock. Kagome glanced at Sesshoumaru before saying "Well he is a Full-demon trapped as a Hanyou isn't he? plus a red aura fled the Somonga when he grabbed it i think it isn't cursed anymore."

Sesshoumaru blink-blinked then stared at Dog-Kyuasha whispering "Brother are you really that strong?"

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Kyuasha roared as Naraku struck his back before swating through his shield sending Naraku to the ground placeing a paw on top of his chest almost crushing him.

Naraku stared at Kyuasha in anger and fear "How? how is it a simple weakling like you can destroy my shield?" He coughed out

Kyuasha grinned ferally before saying "Heh bet you didn't think i could talk in this form? Feh simple Naraku i'm not weak i'm not you and I have those I love and care for and with that he raised his paw in the air calling out "Burning claw of the Dog" before swinging down and crushing Naraku who cryed out in pain as he was turned into ashes leaveing behind the Jewel of Four souls.

Kyuasha glanced over to his brothers happily before limping over to them and falling heavily on his side panting hard still in Dog form he said "Sesshoumaru, brother remove my fangs and take them to Totosai and have them made into two swords tell him that they will become the blades they are ment to be.." as he finished he passed out but seemed to be struggling with something.

Rushing quickly over to his brother Sesshoumaru hesitated before ripping out both of his upper fangs Kyuasha seemed to relax before turning back into a human form then into a Hanyou as Somonga fell out of his hand landing point first in the ground.

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two weeks had passed since Naraku had died, Miroku's Wind tunnel had vanished and him and Sango had gotten married, Sesshoumaru had done as Kyuasha had asked and taken his fangs to Totosai Immediatly and they were currently being foraged into blades, Inuyasha and Kagome had taken the Shikon jewel and turned it into a Necklace which Kagome wore while Inuyasha protected her and their were growing even closer each day, Shippo? Well he just stayed with Kagome and Inuyasha, Kyuasha hadn't woken up since the fight with Naraku.

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Kyuasha slowly opened his eyes to see Rin trying to feed him something "Hello Rin" he said causing her to jump three feet in the air. Rin looked over at him holding a hand over her heart she said "My lord Kyuasha your awake! ill go get lord Sesshoumaru!" as she ran out to get Sesshoumaru he looked around the room noticing he was at Totosai's place.

Sesshoumaru walked into the room and kneeled down next to Kyuasha "How are you brother?"

Kyuasha smiled and said "Im fine how long was i out? Oh and tell me brother are my swords done?"

Sesshoumaru smiled "Always straight to the point? Two weeks you were out, yes they are would you like to see them can you stand?"

Kyuasha nodded then struggled to his feet but made it without help and Seeshoumaru led him outside to Totosai.Totosai looked up at Kyuasha with two bundles in his hands smiling before saying "Well the great Kyuasha is up and about i must say your fangs were the most impressive i've ever seen the swords i made are by far the best yet! They are even Par with your fathers! here they are!" he then handed them to Kyuasha.

Opening the first bundle Kyuasha pulled a beautiful sword with an Emerald as a pommel stone "That one was made from your right fang i got the pommel stone from your brother, its called the Tetsaga the blade of Hanyous and Demons" Totosai explained as Kyuasha put it on his back then went to open the other "Ahh yes that is a strange one the Tenfaga (Ten-Fay-Ga) it was made from your Left fang but something strange happened when it was made it spoke to me and said that only the fangs owner and the chosen one of a future burden could wield it do you know what it means?" Totosai asked as he wrapped it back up and placing it in his pack before nodding but not saying anything.Kyuasha shifted nervously as Kagome and Inuyasha came up before turning to his brothers and saying "Brothers i want to ask you a favor" after seeing them nod he went on "The swords of three worlds are too dangerous to leave in this Era so is The Shikon no Tama I think it would be best if we took the swords to Kagome's time that way Inuyasha and Kagome could stay together and we wouldn't have to worry about Demons stealing them and I belong in the furture anyway you know that, if not for Kagome i wouldn't know you were alive how about it?" he asked with a hopeful look on his face.

Before anyone could respond Totosai said "Actually i think it would be a good idea to take the swords of FIVE worlds away from here."

Kyuasha stared at him "Five world?"

Totosai nodded "Yes the Tetsusaiga the sword of Man,Tenseiga the sword of Heaven,Somonga the sword of the Netherworld, The Tetsaga the sword of Demons,And the Tenfaga the sword of Magic, personally i dont know why its called that but most likely you will find out in the future"

Sesshoumaru looked at Rin before thinking it over and saying "If Rin can come then ill go." Inuyasha was really happy "ill go if i can be with Kagome!" Kagome smiled at Inuyasha then said to Sesshoumaru "Of course Rin can come lets go!"

Kyuasha quickly grabbed Somonga's sheath and placed the sword in it and put it on his waist before following after the others to the bone eaters well.

END

Love it? hate it? think its crap? Let me know so i can improve The People from Harry Potters world will show up next chapter also i want your guy's vote on who you think Kyuasha or Kyu should end up with anyone but Kagome is available even Rin for now! later! oh yeah it takes place as a AU of Harry Potter's Fifth Year and because Kyu was trapped in the present time (it will be explained later in the story) when he went back to the past he was only Sixteen so thats how old he is.

Please Review.