Hi, everyone! So I recently made a deal with myself that I'd create a crossover fic involving the ending of each route of Fate/Stay Night: Fate, Unlimited Blade Works, and Heaven's Feel. This will be from the end of Heaven's Feel and I hope you enjoy it. It's something that just came to me and I've been meaning to write a Fate/Stay Night crossover with Young Justice. I hope you all enjoy.

Now, let's start.

A young boy walked into the cavern, only to be met by a bright red light in the center. A massive pillar of flesh and shadows emitted said light, illuminating the entire thing. The boy scanned around, searching for something, until he found it. Two girls, one wielding a sword of light, the other surrounded by giants of darkness. The two fought, evenly matched, with an infinite army of shadows being created only to be struck down by the girl with the jeweled sword. Suddenly, there's an enormous flash of light, blinding all in the cavern.

When sight returned to the boy, he scrambled to the girls, on all fours. The cavern trembles, as one of the girls scream "Nee-san!"

The boy desperately shouted one of the girls name, panting from the strain of his injuries. He finally makes it to the girls, standing up, but finding a horrid sight.

"Tohsaka."

As the ground shakes, the boy is met with the sight as one of the girls, dressed in red and wearing pig tails, was lying face down, blood spilling out onto the ground. The beauty looked like a flower, but had fallen from its stem.

"…Senpai…."

A soft voice calls out and standing near the bloodied body, the other girl stood looking horrified. The other girl was dressed in shadow, her unnatural white hair covered in blood and red eyes leaking tears. Physical shadows danced around her, moving around her body like lightning.

"Sakura."

"…I killed her," Sakura said, horrified and voice trembling.. "Nee-san cared about me, but I killed her."

Her body was covered in both the blood of Tohsaka and the shadows, which connects her to some dark god. She looks at herself in self-hate, cursing everything with all her might.

"I was stupid. I'm sorry. I'm sorry. There's nothing but pain. You always told me not to lose, but I was too stupid to understand. Senpai believed in me, but I just kept betraying him!"

The shadow surged as she continued talking, wrapping around her body.

"….No… I have to stop… But I can't go back! No, no, I don't want this!"

She refuses it, refusing the shadows and its dark god master. She hates it, hates herself, trying to do the only thing she can, kill herself. But she can't, the shadow won't let her, protecting her from the deed. Sakura is being ripped apart by her own sanity and the dark god's wishes.

The boy thinks back, back to when he had a chance of stopping this tragedy. But instead of helping her, the boy was scared, scolding the girl, causing this disaster.

Running past the memories, the boy runs to the blood-soaked girl on the ground. She was still breathing. The boy let out a sigh of relief. It's too early to give up.

"Right, she's not dead," the boy assures her. "She can be saved. No, she has to be saved. We have to save her. Right, Sakura?"

Light and hope returns to Sakura's eyes, releasing a sigh of relief. But the shadow, sensing an opening, tries to take her over once again.

Sakura screams in pain and fear. "No! Run, Senpai!"

She desperately tries to control herself as the shadows surge, coming forth to strike the injured girl and the less injured boy. The boy covers the girl with his body, letting the shadows whip his back. Gasping in pain, the boy can tell the shadows were forced to miss, praising Sakura for her interference.

Sakura gasps, horrified that she caused the boy pain. "No, Senpai! I, I…."

The shadows around her begin swallowing her, trying to protect its host. The boy curses Angra Mainyu, the dark god who used Sakura like a tool, just to be reborn into this world.

"I know," the boy calmly speaks, shrugging off the pain. His wounds disappear, only to be replaced with swords. "It's that kid's fault for not giving up. He's throwing a tantrum because he doesn't want you taken away." The boy struggles to stand, eventually doing so. "Hold on. I'll smack him and get him off of you."

With that promise, the boy begins walking towards Sakura.

The struggling girl staggers back, fearful once again, but not for her sake. "No!" she begged. "Please stop, Senpai!"

But as she desperately begged for the boy to be safe, the shadows strike again, grazing his cheek and only missing due to Sakura's desperation, avoiding decapitating the boy completely. Sakura pants, desperately trying to control it, but failing, as more shadows begin to appear around her. The white haired girl begins crying, but not for herself, but of frustration for not being able to do this.

"…No, Senpai," the girl cries. "I can't suppress it. Nee-san taught me, but I'm going to lose. …I wasn't strong. I'm a coward, a wimp, and a terrible person."

The boy ignores the girl's rant of self-hate and pleas to take safety, as another shadow lance strikes his cheek.

The girl cries more, as her beloved senpai is struck once again by her uncontrollable powers. "No, why are you coming, Senpai?! I'll kill you if you come any closer!"

This wasn't a threat, but simply stating a fact, a fact she's unable to change and causes her own self-hatred. This, this was hell. Her own existence was bane, killing and ripping apart the ones she cares about. But the boy selfishly takes another step, only wishing to do one thing. He puts a gentle right hand on his left shoulder, grabbing the holy shroud sealing his power, but also keeping away his death.

"Why?" Sakura screams in desperation, voice breaking. "Run! Please run, Senpai! Please take Nee-san and run! You can forget about me! I'll, I'll die here! I can die by myself! I don't want you to see me like this!"

The shadows coil tighter with each step the boy takes; the boy's advance was hurting Sakura on both a physical and mental level.

"Why aren't you listening to me?!" Sakura says, trying to understand what's happening. "I won't hold back if you're going to come any closer. I'll kill you before you kill me!"

Again, this is not a threat nor is it a promise. Simply another desperate fact that cannot be changed.

The boy merely smiles at his silly kouhai. "I don't need to explain. I'm going to get you out of here and save Tohsaka. That's what I said, right?"

Sakura's face turned from pained and afraid to merely concerned. "A-are you still going on about that? …Don't. I can't be saved. No, I shouldn't be saved. I shouldn't live."

The boy takes another step and the shadows strike his stomach, no it wasn't a strike. Sakura had managed to alter the attack once again, causing the shadows to push the boy away instead of running him through.

Sakura looked at the potentially lethal attack. "See, you saw that. This is how I am. I can't go back, and he's not going to let me go. And, even if I do go back…. I've killed a lot of people. I killed many people, killed Nii-san, killed Grandfather, and killed Nee-san! What- what do you want me to do!? I can't give back what I've taken. I've killed many people! Are you still telling me to live?!"

The girl shouts these things in confusion and sorrow, certain that there was only one way out for her. The boy understands what she means. Trapped by her crimes, she has no chance of salvation. Even if these shackles of shadows were to be broken, her own sanity, her own conscience, will destroy her. She'd forever be haunted by her own darkness.

"Of course," the boy said, with no emotion and no anger. "You took lives, so take responsibility, Sakura."

The boy grabs the holy cloth, ripping it off his arm, tearing off the only thing keeping him alive. Loosing himself, the boy continues to step forward, having something he needs to say.

"Senpai…."

"Yes, I don't know where the crime is, or how heavy it is."

Shadowy lances surge forward but merely bounce off, as blades appear on the man's body. The man grits his teeth, ignoring the pain coming from the swords.

"But I'll protect you. I'll protect you from everything. It may be hypocrisy, but ideal has always been to protect the one I love…."

More shadows strike the man, only to bounce off the swords with a spark. The man continues his advance until finally right in front of Sakura.

"No," Sakura says softly, looking at the remains of the man's body. "Senpai, your body's…."

Trace on, the man invokes in his head, concentrating the rest of his mind on a single task.

Magic circuits surged, creating prana for him to do one final spell, one final projection. He went over the spell requirements.

1. Judging the concept of creation – completed. A ritual dagger made to assist in spells.

2. Hypothesizing the basic structure – completed. The shape of the dagger took place in his mind.

3. Duplicating the composition material – completed. A list of materials began filling the man's mind.

4. Imitating the skill of its making – completed.

5. Sympathizing with the experience of its growth – completed. Used to kill both dear friends and foreign kings. Has become an item of betrayal, a betrayal to family and a betrayal to its owner. A betrayal of magic itself.

6. Reproducing the accumulated years - completed

7. Excelling every manufacturing process – completed.

A dagger appears in the man's hand.

"Senpai," Sakura says.

"I'm going to punish you. This is gonna be harsh, so grit your teeth."

With a small gasp, the girl merely replies, "Yes." She holds out her chest, thinking that her senpai was going to give her the punishment she deserves.

"Let's go home, Sakura. Cut your ties from him."

The boy then stabs the dagger into Sakura, piercing her heart, within a single breath. After a flash of light, the shadows are torn apart, freeing Sakura. Sakura's hair becomes its former purple hue and her eyes also return to being purple. She's released from the shadows through the Noble Phantasm in the man's hand, Rule Breaker, a dagger meant to break mystical contracts and negate any magecraft. It shattered the connection between Sakura and Angra Mainyu, all without harming Sakura.

The man looks at the two girls, happy they're safe. Even as his memories begin fading and his mind is dying, he smiles. Tohsaka's unconscious magic was sustaining her despite its injuries and Sakura was merely unconscious.

Suddenly, the cavern shakes and the man looks to the pillar of shadows and flesh, remembering he has one last job to do. Even after losing its host, it wouldn't disappear, becoming too powerful now. With no option left, he moves to eliminate it, to finally put an end to this.

"Shirou, do you hear me?"

A soft, beautiful voice calls out to the man and he turns to see a familiar, tall woman. A goddess in human form, beautiful purple hair goes to her legs. Her eyes are covered by a blindfold and she wore a very small rag of a dress. In her hand, a spike on a chain gave off an aura of uneasiness. She was… who was she again? It's on the tip of his tongue. In any case, the man knows her. She may look dangerous and deadly but he knows she's at least trustworthy.

"Good," the man said, his mind continues to fade. "Can you take Sakura and Tohsaka and get out of here?"

"Shirou," the woman asks, concerned for not just the man, but for Sakura. "What about you?"

The man smiles. "I'll go after I destroy that thing. It'll be quick, but every second counts for Tohsaka. And Sakura would be affected by the shadow if she stays here. Angra Mainyu might be persistent and make Sakura his Master again."

The woman looks down, in solemn understanding. "Understood. I will carry Rin and Sakura. Please rest assured. I have rested enough for that."

"Please," the man said again. "Go outside with those two. The cavern's collapsing. Um. R-R-" The man tries to remember her name, but fails. His own mind is still deteriorating. "Damn. Your speed would should have no problem with the falling rocks."

The woman is silent, then speaks once again. "Then I will be going. I shall come get you after I get them to a safe place."

"Um… That's nice to hear, but make sure they're okay first," the man reminds her. "You're the only one I can trust. I'll escape by myself, so please treat Tohsaka. Sakura can't be happy without her."

Even now, after everything, the man cares more about the survival and happiness of others rather than his own safety. He's still him after all.

"Certainly, but the same goes for you, Shirou. Sakura needs you and Rin. Please remember that. …I need you to support Sakura."

The man gives a look on confusion.

"I shall hurry," the woman said, picking up Tohsaka and Sakura. "Good luck."

And with that, the woman dashes to the entrance at ridiculous agility.

Shirou Emiya then gives one final breath of relief, before turning to the pillar once again, ready to finish this once and for all.

Scene Break

Sakura Matou opens her eyes to find herself in a field of flowers. Feeling no pain nor weakness, she sits up, looking around. Nothing but blue skies and flowers surrounded her, like she had been placed inside an eternal summer garden.

"I-is this heaven?" she wondered out loud, knowing she didn't deserve such a place. She put her hand in her hair to find that it had reverted back to its original brown color, the shade which was before the Makiri, before Zouken, had tainted her.

"Not quite, Tohsaka Sakura."

A voice came from the heavens and light begins to bend in front of her eyes. Soon, an image of an albino woman was standing in front of her. Her appearance looked strangely… familiar.

"Illya?" Sakura wondered. No, Illya was a child. Though this woman may look like her, she's much too old to be the young homunculus.

"That answer is not correct," the woman shakes her head. "I am merely her ancestor. Greetings, winner of the 5th Holy Grail War. I am Justeaze Lizrich von Einzbern. Congratulations on winning Heaven's Feel and obtaining the Holy Grail."

Sakura blinks in confusion. "W-what? I'm sorry, but I don't understand…."

Justeaze nods, trying to explain the situation. "Emiya Shirou has managed to destroy Angra Mainyu inside the Greater Grail, purging it. Now free, I shall use my remaining power to grant your wishes, Tohsaka Sakura. I have the energy stored in from the Fourth Holy Grail War and the Fifth Holy Grail War, along with the energy of the souls of Gilgamesh. I am able to grant three wishes."

Sakura blinked. "Wait, I still don't understand-"

"I know," Justeaze interrupts, "but unfortunately we don't have much time. Even now, my descendent approaches the Greater Grail, ready to shut down the Heaven's Feel system using the Dress of Heaven Mystic Code. I apologize for putting this pressure on you, but you must make your wish now before it's too late."

Sakura stands up, unsure of herself. "But-"

"Make your wish," Justeaze repeats.

Sakura stands there, alone. Her immediate thoughts go to her Senpai, wondering what he'd say.

Senpai, she thought.

He had sacrificed everything for her. He threw away his ideals for her, even throwing away the dream he had held in his heart since childhood. She remembers him telling her it once.

"I want to be a hero of justice."

With that thought, Sakura smiles at Justeaze, and makes her wish.

Scene Break

Emiya Shirou was dying. He stared up into the dark ceiling of the collapsing cavern, then moved his head to look at his recently killed enemy. Kirei Kotomine. What an insane person. Not that he had any right to judge.

Shirou closes his eyes as his mind continues to fade, already fractured from precious harm.

Suddenly, a magic circle was drawn around him with light. With shock, Shirou looked around, desperately. He couldn't move his body, all that energy was gone, used up for his final attack on Angra Mainyu. Shirou felt his body float into the air.

"O-Onii-chan!"

A voice called out and Shirou saw a girl, wearing a strange dress, sprint desperately to him. She was I- I- He couldn't remember anymore. Those memories fades long ago.

She ran to him, but when she came to the circle, she stopped, her eyes dulling.

"Illya?" he asked confused, then realizing he knew he name again. How? Archer's arm should have been breaking down his mind. Why was he remembering things again?

"Not, quite, Emiya Shirou," Illya said, with absolutely no emotion or concern for Shirou. "I have once again take possession of Illyasviel so she cannot interfere."

"W-who are you?" Shirou demanded. He struggled once more to move, trying to escape the force keeping him down.

'Illya' merely stepped forward, beginning to levitate to get to Shirou. "I am the original homunculus used as the core of the Greater Grail, Justeaze Lizrich von Einzbern. I thank you for purging it of Angra Mainyu. His influence was… chaotic."

"T-the Greater Grail?" Shirou repeated. "But I destroyed it!"

Justeaze shakes her head. "You merely destroyed Angra Mainyu, as I said. Please try to listen."

"Why are you here?" Shirou demanded. "What do you want with me?"

Justeaze merely bowed her head. "I am here to grant the wishes of the Fifth Holy Grail War winner, Tohsaka Sakura."

Shirou can't believe what he just heard. "W-what?"

"Please try to listen. Tohsaka Sakura won the Heaven's Feel ritual. Her Rider Servant is the only one who survived in the end. And due to the fact that I have leftover prana from both the Fourth Holy Grail War Servants and Gilgamesh, who is worth several Heroic Spirits, along with the Fifth Holy Grail War Servants, I am capable of granting three wishes. Her first one, to restore the one known as Shirou Emiya."

As she speaks, Shirou's mind begins to repair and the swords covering his body begins to fade, revealing newly regrown flesh. Even his soul, which was corrupted by his own future incarnation, had been repaired, showing no signs of deterioration. However, Shirou looked at his, no Archer's arm, the arm of the Heroic Spirit EMIYA. It had begun fading from existence, blue spiritron particles emanating from it.

Justeaze notices Shirou looking at his disappearing appendage. "Unfortunately, I cannot completely restore you, as restoring your very soul took up much of the wish's energy. And the other wishes have already been made. Thus, I'm trying to conserve power by fully integrating the arm's Saint Graph directly into your soul and connecting you fully with that conceptual Weapon inside of you."

Saint Graph? Shirou thought. Conceptual Weapon?

As far as Shirou knew, the spirit of the Holy Grail was reciting Ancient Egyptian poetry. However, Shirou felt knowledge bombard his head, memories of someone else. Archer. All sorts of knowledge went through Shirou's head, so much that it felt like his head was going to explode. He screamed as knowledge of Noble Phantasms, knowledge on weapons, knowledge on family, knowledge of friends, and knowledge of past lovers filled his head. He saw where the road of a hero of justice lead him, no Archer. And he saw the true connection between the one named Shirou Emiya and Illyasviel von Einzbern. She was-

"Unfortunately," Shirou's thoughts were interrupted by Justeaze, "I can only hope Avalon restores your arm. I'm unsure, even now. However, onto the next wish: To give Shirou Emiya the strength to fight once more. While integrating you with the arm was a start, I will also download every armament item from the Throne of Heroes itself. Enjoy."

Once again, Shirou screams from the strain of the mental intake, knowledge of more weapons fill his mind: a divine spear which slays all including gods, a shield capable of creating a world, a potion that releases one's dark side, a golden coffin which kills the unworthy who touch it, a golden key-sword that opens the Gate of Babylon, a flag capable of summoning an army of weak samurai Heroic Spirits, a sword that can annihilate anything in exchange for sacrifice, a god's hammer that summons lightning, a sash that imbues the blessings of the Greek pantheon, a wheel which represents the ideal universe ruler, ten rings which control all magecraft, a shield which is where heroes go to, and so many more. More than could be describe. It was so much, too much, threatening to overload Shirou's mind.

Once Shirou's screaming stopped, he glared at Justeaze, cursing at her. Either not understanding Shirou's pain or simply not caring, Justeaze puts her hand on Shirou's head. "And I know this won't be as much use, but I'll download my own knowledge of alchemy and anything else I can, such as the ability to speak other languages and even fragments of Third Magic. Consider this thanks."

Shirou felt the strain of the mental download once again, though this time it wasn't as painful compared to the others. He managed to let the upload happen without screaming.

"And now, the final wish," Justeaze proclaims, as Shirou ascends. "To grant Emiya Shirou's wish: to become a hero of justice. In order to do this, I shall send him to another world, where such a wish is possible."

Shirou's eyes widen upon hearing this. "No! Don't! She wouldn't want this! Let me go! Stop!"

But Justeaze just ignores his pleas, forcing him to continue his assent. Shirou continued to struggle, to try to break the magic's pull.

"No, stop! Illya! Rider! Help! Make her stop! Sakura! Sakura! SAKURA!"

A bright light fills the cavern and Shirou Emiya has left this world.

Scene Break

There's nothing. Absolutely nothing. All Shirou Emiya was floating in was nothing. There was no sky, no ground, and no sea. Just nothing.

Suddenly, a burst of light and Shirou found himself emerging from… something. It felt like he was being dragged out of mud, like he could feel himself being pulled from some gunk. Barely conscious, he looks down to see space and from where he was pulled, a wall, going on and on to infinity. Shirou, in his state of mind, did not know what think of it.

Suddenly, Shirou began gaining speed, more and more until he was a comet in the sky. He was sent hurtling through space, no clear destination in sight. Suddenly, Shirou noticed something in his path, a strange tower floating in space.

This is going to hurt, Shirou thought.

Then….

CRASH!

Shirou burst through the tower, finding himself in some complex space. It was like nothing he'd ever seen, like something you'd see out of an M. C. Escher painting. Stairs were on the side, on the ceiling, in every direction: up, down, sideways, diagonal, everywhere. The areas that had no stairs was just a beautiful golden void. Soon, Shirou eventually crashed, landing on one of the platforms available.

Barely holding on, he looks up to see the shocked face of an old man.

"Got to hand it to you, kid," the old man said. "Nothing usually surprises me anymore but you really did shock me."

"H-help me," Shirou groaned before blacking out.

And that was the story of how Shirou met Kent Nelson.

I know, I know, not my best but please cut me some slack. I've been awake for a long time and I'm exhausted. So as of Shirou's left arm's fate, I'm gonna make a poll where you guys can decide; he can either regrow one thanks to Avalon, use a puppet arm like Shiki Ryougi's, or use an altered version of Bedivere's arm Noble Phantasm.

As of, Shirou's powers in the DC Universe, without Gaia's presence weakening magecraft, Shirou's projections will now be easier to be summoned as well as not needing extra prana to continue existing. The gradation in Gradation Air is now unneeded. It will also make it possible for Shirou to establish a reality marble, but as he's never used his Unlimited Blade Works, there's a chance he never will use it. Maybe.

Anyways, I'm tired so if you have any more questions, just comment of PM me. See ya, everyone! Please comment, like, and/or favorite!