A/N: Let's say for a minute Harry Potter was like an anime, where once his friends died, a new power suddenly made itself known. For the sake of this plot, let's also pretend that every spell Voldemort casted on Harry wasn't going to completely obliterate him.
(The following is from HP and the OoTP: pg 812)

Chapter 1: Motivation

"Go to hell Bellatrix! The prophecy is smashed, and I can't wait for Voldemort to hear about it!" Harry roared, making Bellatrix look at him in anger.

She couldn't fail her master. He would be sorely disappointed in her, and his disappointment was not one she wished to bring upon her. She let out something between a piercing wail and roar, and pointed her wand at Harry.

"ACCIO PROPHECY! ACCIO-"Bellatrix stopped mid spell as she felt a cold, and almost skeletal hand rest itself upon her shoulder. She turned her head slowly, and saw the blood-red eyes that she knew only belonged to her master. She wanted to whimper, but she found that no sound could leave her throat, as it seemed to have gone instantly dry.

"So you smashed my prophecy?" Voldemort said softly, staring at Harry with pitiless red eyes, making Harry squirm internally. "No Bella, he is not lying. . . . I see the truth looking at me from within his worthless mind. . . . Months of preparation, months of effort . . . and my Death Eaters have let Harry Potter thwart me again. . . ."

"Master, I am sorry, I knew not, I was fighting the animagus Black!" sobbed Bellatrix, flinging herself down at Voldemort's feet as he paced slowly nearer. "Master, you should know-"

"Be quiet, Bella." said Voldemort dangerously. "I shall deal with you in a moment. Do you think I have entered the Ministry of Magic to hear your sniveling apologies?"

He turned to face Harry, the shadow of a smirk appearing on his face, accentuating the snake-like persona that he seemed to emulate. His cloak rasped in non-existent air, and then he raised his wand, ever so slowly, making Harry raise his own to match. The tension in the air building slowly, making Harry's arms, and upper back tense, ready to pounce into action. However, Voldemort merely held his arm up, and smirked.

"I have fought too many of your kind, Harry. For you see, you all thrive on the same thing. You, and even that worthless, old fool, Dumbledore. You all thrive on emotion, and let the lives of others dictate how you act. You see Harry, I have long forgotten such attachments, and I shudder to think that I ever had them. You must be willing to throw away everything, in order to achieve the most power for yourself. Humanity, companionship, and love are you biggest blunders Harry Potter. However, I can hear your thoughts as plain as day, and I can see that you will not believe such words. Therefore, I shall show you through my actions!" Voldemort, said, his smirk turning into a grin.

It was then that Harry followed Voldemort's eyes, and saw that his friends had just entered the room, and Harry suddenly felt dread in the pit of his stomach. He roared, and attempted to start firing spells off at Voldemort, hopefully while telling his friends to get out now. However, the minute that he attempted to shout out spells, Voldemort sent a spell at him that merely pushed him back into a statue of a golden centaur, and then the statue animated, making its arms grab him, in order to hold him in place. Voldemort sent him a smirk, before turning to his friends.

"Friends of Harry Potter, I regret to inform you that this is the last time that you shall take breath. However, take solace in the fact that it is I, Lord Voldemort, who shall be sending you to your demise." Voldemort said, losing the smirk, making his eyes convey just how menacing he was, and suddenly, the group of children was very afraid.

It was Ron however, who broke the silence, making Harry want to palm his forehead. Anytime you faced Voldemort, it was his arrogance that always cost him the victory. If you enrage him, he'll just make sure to focus, and thus, you ensure your death. Harry wanted to yell at Voldemort, hopefully distracting him, but Bellatrix had silenced him, and had kept a wand to his throat. Ron snarled, and stepped in front of Ginny and Luna, Neville joining him, and Harry was wondering where the hell was Dumbledore!

"You won't take us without a fight you bloody wanker! No Weasley ever surrenders!" Ron yelled, whipping his wand in front of him, making the others follow suit.

Five shouts of "REDUCTO!" were heard, and Voldemort merely waved his wand in front of him, and all the spells vanished from view. All you saw were the dropped jaw looks on each of the children as it became apparent just how out of their league they were.

"Impressive. I felt the power behind those spells. You could have done well serving under me once you were done with school. Alas, it was not fated to be. Let's start with the brave Weasley, shall we?" Voldemort asked, levying his wand at Ron, and the boy froze as a flash of green light removed the light from his eyes.

Ginny screamed, tears starting to stream from her eyes as her brother fell to the floor lifelessly. She sent a hateful, yet teary glare at Voldemort, before attempting to cast a spell. It wasn't meant to be, for Voldemort didn't wait for the girl to come to her senses. She was the next to fall to the legendary killing curse. He was about to strike again, but Neville and Luna came to their senses and started to move, making Voldemort grit his teeth in annoyance. Moving targets were something he always detested.

"Reducto! Bombarda! Stupefy!" Neville shouted, making sure he casted every devastating spell he could remember at the moment.

It wasn't enough, as the Dark Lord merely summoned a slab of concrete to defend from the spells, and then shot killing curses at Neville, one of them catching the boy in the leg, and then he fell. Luna kept moving; however, Bellatrix left Harry to shoot a killing curse in the girls' back, thus ending her life just as quickly as Neville's. Voldemort stopped to admire the work he had just done, watching the lifeless corpses he had just created.

Harry just stared like he couldn't believe what he was seeing. The shock of having all of his friends murdered in front of him was just something that hadn't sunk in yet. His friends were gone, except for Hermione, who Harry had left in the care of Remus haphazardly, while going to run after Bellatrix. They joined him in his quest to save his godfather. The ones most loyal to Harry were gone, and he was just bound to some damned statue, while the man in front of him just killed his friends! Harry was angry, no, he was beyond angry. Angry was when he killed Ron. Furious was when he murdered Ginny. The flames of hell whipped around him when Neville was brought down. And then tears started falling, when Luna, a girl so similar to him in many ways, had been removed from this life. He couldn't save any of his own; after all they had done for him!

No more chess with Ron. No more talking with Luna over imaginary creatures she seemed to have created. No more talking about Quidditch with Ginny, even though she hid from her brothers that she knew so much about it. No more extra practicing with Neville, helping him with his control over his magic. His friends were gone. In that moment, something within Harry snapped, and the statue burst into a million pieces.

Voldemort and Bellatrix both looked up at the dust that had built up from the statues' explosion, and then saw that a white light was flaring, before changing into a blue light that whirled around the entire room. Both of the dark magic users felt a cold shiver, which shocked Voldemort. He didn't believe that the boy could instill such a fear within him. Harry merely walked forward slowly, memories of his friends in Hogwarts flooding through his brain.

Remus ran into the room, carrying Hermione in his arms, with Tonks, Moody, and Shackelbolt following right behind him. They couldn't believe what they were witnessing at this moment. The magical pressure within the room was enormous, and they all felt such an intense, yet brilliant sorrow. The aura of magic was visibly coming off of Harry, and Remus saw how it changed from a deep, electric blue, to an enraged red. Voldemort, not one to be deterred by the light show, decided to shoot a killing curse straight for Harry, only to have it never leave his wand.

Voldemort watched in amazement as his wand was removed from his hand, and crushed into multiple pieces in the middle of the air. The sheer shock on Voldemort's face did not even register with Harry as he walked toward where his friends lay in their lifelessness. Voldemort, not one to be stunned for long, took Bellatrix's wand from her grasp, and started to recite an incantation, that sounded like it was garbled. Harry's eyes shot wide open as he saw tendrils of black magic reach for each of his friends' corpses. They all slowly rose from the ground, and slowly moved toward Harry, making Harry's rage grow further than it had already been.

"You have no right! You have no right to interfere with their bodies like this!" Harry yelled out at Voldemort, making the dark lord in question, smirk.

"You may have suddenly gained a new power boy, but do not think that you are a match for LORD VOLDEMORT! Now attack my inferi, and show the boy who is the master!" Voldemort roared, about to advance on him with Bellatrix's wand still in hand.

That was before a bright fire surrounded Harry, and removed all the inferi. Harry could only stare in shock, at the remains of ash, which had at one time been his friends. Harry looked on in shock, as Dumbledore had appeared on the scene, and thought to eradicate the inferi that were surrounding Harry, not knowing that they were his friends that were reanimated. Harry's rage grew, now extending to Dumbledore, who decided he knew what was best.

Along with Dumbledore, the minster and his goons also entered into the room, only to stand with their mouths agape, staring right at Voldemort.

Harry raised his arm, and pointed it at Voldemort, before suddenly, the dark lord clutched his arm, as all the bones inside were painfully broken in many different ways. The same process was repeated with his legs, and his other arm. Voldemort hissed something to Bella, before she grabbed her lord, and they apparated out of the room, leaving Harry to deal with Dumbledore and the rest of the Order, who seemed to be shocked at the waves of magic just pouring off of Harry. Harry looked at Dumbledore, and seethed.

"You destroyed their bodies! Do you understand what you've done?!" Harry roared, making Dumbledore flinch at the tone, but he continued on with his calm demeanor.

"Harry my boy, what are you talking about?" Dumbledore asked, making Harry snarl. The old man hadn't even realized what he had done to them.

"Ron! Ginny! Luna! Neville! You just burned all of their bodies, to the point where there's nothing left! I could've saved them somehow!" Harry yelled, tears streaming down his eyes, and the aura flaring around him dying down slowly.

Dumbledore merely looked at the pile of ash, and realization slammed into him, as he realized the gravity of just who those piles of ashes were. The brave young souls that had charged along with Harry in order to assist him, and he had just incinerated them completely. In his defense though, he had seen Harry surrounded by inferi, and thought to act first, and ask questions later. Of course, now he realized how grievous his actions were, but once a corpse was turned into an inferius, there was no way to revert the process. Then again, he had no idea what kind of power Harry had tapped into.

"My dear boy, I had no idea that those were your friends. Believe me; I would not have acted so quickly had I known. On the other hand, once an inferius is made, there is no known way to change the corpse back into its original form." Dumbledore said, trying to placate the now very angry teenager in front of him.

Harry merely looked to the pile of ash, before turning back to Dumbledore, and then surprisingly, he passed out promptly. Dumbledore looked shocked, but then gave orders for Remus and Moody to take Harry and Hermione back to the hospital wing of Hogwarts, while he dealt with the minister and aurors. Remus and Moody did as ordered, and apparated into Hogsmeade, before carrying them up to the wing.

Poppy Pomfrey looked at Remus and Moody bringing in the two children, and she immediately ushered them into their own beds before running diagnostic spells, and summoning the necessary potions from her medicinal cabinets. She sent a patronous to fetch Severus, as she would need the man to brew two specific potions for Hermione, as the curse wasn't lethal, but it would have drastic effects on the girl if it wasn't treated properly.

She then looked over at Harry, who seemed to be suffering from magical exhaustion, as well as cuts and bruises all over his body. The boy would be extremely sore in the next few days, but he would be in a lot better condition than Granger, that was for sure. She started working on the two of them, performing the necessary spells. Remus and Moody merely stood there, watching the mediwitch perform her duties, unable to do anything but watch over the two.

Meanwhile, inside Harry's mind:

Harry was utterly confused, for he had no idea where he was. He seemed to be in some sort of trap, or that's what he believed. There were so many doors around home, all stretched out in a long column on each side, like in those cartoons of the mystery solving dog, that Dudley used to watch. All he remembered was battling Voldemort at the Department of Mysteries, and then yelling at Dumbledore, before everything went black. He tried to piece together what happened, and finally came to the conclusion that he might have just passed out. Yes, that was plausible enough, and it seemed logical, because he was tired as hell after that mysterious light went away.

Suddenly, he heard footsteps, and he looked in front of him, to see a man, or what closely resembled a man, but with very distinguishing features. He had spiky hair that went all the way down to his legs, and was a dull gray, almost white color. He was wearing no shirt, and only a pair of what looked to be cloth pants. The man appeared to be carved from stone, for every single muscle was visible, and he had claws at the ends of his fingers. With a menacing stare, he smirked at Harry, showing the slightest hint of a pair of fangs.

"Do you know how long I've been waiting for you in here?" the man snarled at Harry, making the boy wince at the harshness of his tone. It seemed as if the man was pissed, and he was waiting to take it out on Harry.

"Well? Do you have a tongue or what boy?!" the man asked once more, making Harry realized he hadn't said anything yet.

"Um, I don't know who you are?" Harry said lamely, wincing at how pathetic his response sounded. However, it was the truth. He had no clue who in the world this man was.

"I suspected as much. You wouldn't know me brat, seeing as I'm a couple hundred years your senior. One of your ancestors was an experimenter, and she seemed to have a thing for using samples of magical creatures. I am an ancient breed of demon, known as the Mazoku. I have no clue how your ancestor got a hold of a sample of my species, but she had this habit of injecting them into herself in order to amplify her capabilities. The trait of a true demon, a lust for power, was something that she had in spades." he said slowly, making sure Harry took all the information in.

"So I'm part demon?!" Harry said, making the . . . demon slam his palm to his face, annoyed that that's what the boy focused on.

"Technically, you wouldn't have even had to deal with this, because the Mazoku line is known to skip generations at a time, before landing on a true successor. However, when you were fighting that weakling, you triggered your recessive genes somehow, and awakened the power within yourself. It was something out of a fairy tale honestly." the demon said, making Harry's eyes widen.

He didn't know what to make of any of this. A short while ago, his friends had been killed in front of him, minus Hermione. His godfather had been murdered by Bellatrix shortly before that. And now, to add to the night of joyous occasions, he was now part demon. He wanted to yell, to scream, and just break something until there was nothing left of it. However, he couldn't do anything, but break down into tears, for his emotions were running too high, for too long. Suddenly, he was experiencing a flying sensation, as this demon had decked him in the jaw squarely, sending him into the 'wall' of wherever he was.

He got out of the small hole that had been made, and then he looked to the demon with the fiercest scowl on his face.

"What the bloody hell was that for?!" Harry yelled, surprised that he was still able to stand after that last hit.

"You were being a girl. I had to put you in check really quick, or else you would've gotten emotional on me. Look, life is tough, but sometimes, you have to grab your testicles, make sure they're still there, and then charge forward. I'll have no descendant of mine whining about how hard life is, when he's still breathing!" the demon roared at Harry, making the boy scowl even more.

"Who in the bloody hell are you anyway?! For all I know, this isn't even real, and I'm just hallucinating!" Harry shot back, not one to be undermined by this new figure.

"I suppose I didn't give my name, did I? I am Raizen, and you and me are gonna get to know each other real well, really soon." Raizen said with a smile, baring all of his fangs at Harry, who could only hope things, would get better soon.

A.N: I like Yuyu Hakusho, and I like Harry Potter, so I figured why not. I'll be incorporating a lot of elements from Yuyu, but not like they were in the series. Harry won't be superpowered, for I have plans for Voldemort as well. Any feedback would be appreciated, as I'm clueless about crossovers honestly.