Okay, so let's talk about pairings. With Rin, I've decided that their relationship will be lovers who have broken up but are still on good terms and occasionally do it. Sorry. I'm also not doing a Natasha and Shirou thing because I have plans for her. I'm giving a little spoiler for Wanda and Shirou's relationship; it's strictly teacher-student relationship. If Artoria (who will only be summoned as a Lancer in my fics) comes into play, they will be on good terms and act like lovers who have drifted apart. This is because Rhongomyniad changes her while Shirou's alternate selves change him. Luvia, Sakura, and Medusa's relationship with Shirou will be the same with Rin's. For those who love Archerko, I hope I don't disappoint when I say that don't want it in this fic. For all of Shirou's other possible lovers (Bazett, Caren, etc.) well most of them lack the ability to reach the Marvelverse. Personally, I find a Shirou and Maria Hill paring to have the most interesting results.
Anyways, let's reply to some comments.
To EMIYA14: Thank you for the compliment. I hope you like this one. I didn't do an UBW attack, but I did have Shirou blast aliens with swords and do a combo with Thor. Two words: Hammer Storm.
To rc48177: Don't worry, powers won't easily due to U.N. interference. They wouldn't want any superhuman soldiers being created, now would they?
To those who wish for a Shirou/Natasha pairing: I plan on doing something "interesting" to her. (Smiles evilly.) However, she's going to be with Banner.
Anyways, let's start the story.
Shirou, Steve, Natasha and Clint were flying towards Stark Tower in New York City. Tony had flown ahead to scout the area with his suit.
"Do we have communications with Stark," Shirou inquired.
"Yes, Mr. Emiya," JARVIS, Tony's AI, said. "Patching you through now."
"Please tell me you're going to appeal to my humanity," a voice, obviously Loki's, said.
"Uh... actually, I'm planning to threaten you," Tony's voice said.
"You should have left your armor on for that," Loki said.
"Yeah, it's seen a bit of mileage and you've got the blue glow stick of destiny. Would you like a drink?"
"Stalling me won't change anything."
"No, no, no! Threatening. No drink? You sure? I'm having one."
"Is he seriously having a drink right now," Shirou said.
"Hush, I'm trying to hear," Natasha hissed.
"The Chitauri are coming, nothing will change that," Loki said. "What have I to fear?"
"The Avengers," Tony said. "It's what we call ourselves, sort of like a team. 'Earth's Mightiest Heroes' type of thing."
"Yes I've met them," Loki said. "The red one is quite annoying."
"Yeah, he pisses me off to with his magic crap."
Natasha and Clint noticed Shirou was staring at the radio, his eyebrow twitching slightly. In the corner of her eye, Natasha thought she saw his shadow change. However, when she got a better look, the spy found it normal, however she was still wary.
"Anyways, let's do a head count here. Your brother, the demi-god; a super soldier, a living legend who kind of lives up to the legend; a man with breath-taking anger management issues; a couple of master assassins, a supposed mage who managed to kick all their asses, and you, big fella, you've managed to piss off every single one of them."
"That was the plan," Loki said.
"Not a great plan. When they come, and they will, they'll come for you."
"I have an army," Loki stated, sure of himself.
"We have a Hulk," Tony retaliated, equally sure of himself.
"I thought the beast had wandered off."
"You're missing the point. There's no throne, there is no version of this, where you come out on top. Maybe your army comes and maybe it's too much for us, but it's all on you. Because if we can't protect the Earth, you can be damned well sure we'll avenge it."
"Wow," Shirou said. "He's good at monologue."
"You're going to still get him for calling your magic crap aren't you," Natasha said.
"Look at you," Shirou smiled at her cheerfully. The smile was filled with malice and promised death. Clint shivered but Natasha managed to keep her cool. "We've only known each other for a little while and you can already read my mind."
"How will your friends have time for me, when they're so busy fighting you?" Loki said.
Ping! A clanging noise came from the radio.
Ping! Another clang.
"It usually works," Loki said, confused.
"I knew it," Shirou smiled. The mental interference Loki cast on Clint and the others had something to do with the heart. Most likely, some sort of electrical charge absorbed into the body and manipulating the mind. However, the heart is where it's absorbed from, and with Stark's heart protected by his arc reactor, Shirou rationalized that he'd be immune. That's why they had sent Stark up ahead. In case Loki tried that little trick again.
"Well, performance issues," Tony mocked. "You know?"
They hear the sound of something being thrown and hitting the ground.
"Jarvis," Tony moans. "Anytime now."
"You will all fall before me," Loki said, with more anger than Shirou had ever heard him.
They heard glass breaking and Shirou assumed Loki just decided shut Tony up the old fashion way, by throwing him out a window. Then they heard the sound of rockets.
"And there's one other person you pissed off!" Stark announced. "His name was Phil."
They here a blast of energy, Stark's repulsor ray. Suddenly, the portal appeared in the sky. Armies of aliens began descending on New York.
"Oh, crap," Shirou said, watching the portal and aliens appear out of nowhere. He then felt a mystic presence of lightning. "On the brighter side, Blondie's here."
Scene Break
The plane was flying quickly towards the portal.
"Stark, we're heading north east," Black Widow reported.
"What, did you stop for drive-thru?" he joked. "Swing up park, I'm gonna lay 'em out for you."
Iron Man flew in front of the Quinjet, the type of plane they were on. Black Widow mowed them down with a rain of bullets from the machine guns.
They then aim the machine guns at Loki, but he blasts the jet with another prana blast. Hawkeye maneuvers one wing of the jet. They spin and slow down, dropping out of the air as it passes over the skyscrapers. Then finally, they crash into the street.
"Where'd you guys get your licenses?" Shirou asked, "Because they obviously didn't test you correctly."
"What license?" both Black Widow and Hawkeye asked innocently.
"You two are assholes."
"Pot calling the kettle black," Steve smirked.
After Clint and Natasha got out of their seatbelts and Shirou had connected them via telepathy, they got out of the plane and drew their respective weapons: Steve got out his shield, Clint his bow, Natasha her gun, and Shirou his swords.
They arrive in utter chaos and run towards a four-way street. Suddenly, they hear a loud roar and they see a giant flying monster fly out and starts destroying the city.
"You have got to be freaking kidding me!" Shirou yells.
The four look around and they see Chitauri soldiers jumping on buildings, sliding down. Once on the ground, they begin shooting every human in sight.
"Stark," Captain America said, "are you seeing this?"
"I'm seeing, still working on believing," Iron Man replied. "Where's Banner? Has he shown up yet?"
"Banner?" Shirou asked, confused
"Just keep me posted," Tony said. "JARVIS, find me a soft spot."
The four take shelter behind a taxi. They see Chitauri blasting the streets from the air. People run away from them, knowing only death awaits.
"Those people need assistance down there," Captain America said.
Chitauri soldiers landed near them and begin opening fire on them. Shirou uses Medea's Argos spell to protect them while Black Widow shoots them with her dual pistols.
"We got this," she said, nonchalantly. "It's good. Go!"
"You think you can hold them off?" Cap asks.
Shirou's swords disappear and a bow appeared in Shirou's hands. Shirou and Hawkeye smile. "Captain, it would be our genuine pleasure," they said in unison.
The two then begin having archery contests, easily picking off Chitauris off.
As Captain America runs off, the remaining heroes make their stand. Black Widow provided cover fire, Shirou offered protection, and Hawkeye helped people escape from vehicles. After everyone was safe, both Shirou and Hawkeye began raining arrows on the Chitauri, Shirou scoring more hits due to him shooting rapid fire, almost like a machine gun.
"Just like Budapest all over again!" Black Widow yells over screams.
"You and I remember Budapest very differently," Hawkeye said.
The trio begin taking out as many Chitauri soldiers as possible. Shirou projected silver wires and used the alchemy spell Engel Note to turn each wire into homunculus familiars. Putting them into Zelle mode, he sent them out to protect any civilians and blast any Chitauri in their way.
More Chitauri got into close range so Shirou quickly went into close combat mode, he let his bow fade away and summoned Kanshou and Bakuya. Shirou rushed forward, making a sonic boom, and began hacking through Chitauri one by one. In about four seconds, most Chitauri have been hacked to bits.
"Remind me not to make you angry," Captain America said, landing beside them. Thor also landed near them. "What's the story upstairs?"
"The powers surrounding the cube is impenetrable," Thor said, as Shirou, noticing Thor's wounds, began using healing magecraft on him as well as connecting the psychic link.
"Thor is right," Iron Man said via telepathy. "We gotta deal with these guys."
"How do we do this?" Black Widow asked.
"As a team," Captain America replied.
"I have unfinished business with Loki," Thor stated.
"Yeah, get in line," Hawkeye said, annoyed.
"Save it," Captain America ordered. "Loki's gonna keep this fight focused on us and what we need. Without him these things run wild. We got Stark up top, he's gonna need us-"
"Um... guys," Shirou interrupted, finished with Thor's healing and pointing at the street, where Bruce Banner is on a small motorbike.
"Worst hero entrance ever," Shirou deadpanned.
"So," Banner said, "this all seems horrible."
"I've seen worse," both Black Widow and Shirou said. They looked at each other with surprised expressions.
"Sorry," Banner said.
"No," Black Widow said. "We could use a little worse."
"Stark?" Captain America reported. "We got him."
"Banner?"
"Just like you said."
"Then tell him to suit up. I'm bringing the party to him."
"What does that mean?" Shirou demanded.
Just then, Iron Man appeared behind a building, the Chitauri monster in chase.
"Stark, you ass," Shirou said, summoning his bow and the Noble Phantasm Caladbolg. The other heroes got batty ready as well.
"I... I don't see how that's a party..." Black Widow said.
Shirou nocked the bow, but his Revelation skill was telling him to let Banner handle it. He aimed the bow just in case. Banner begins walking towards the monster.
"Dr. Banner," Captain America said. "Now might be a really good time for you to get angry."
"That's my secret, Captain," Bruce smiled. "I'm always angry."
Banner's body began to swell and grow, until he became his Hulk form. The Hulk brought the alien down with a single punch. The monster flips over them but before it could crush them, Shirou released the arrow, Caladbolg easily blasting through the monster's torso, protecting the heroes from being crushed.
"So he can control his rage form just like that?" Shirou questioned. "And we're just going to accept that?"
The Hulk growled at him, and Shirou took a step back.
"Do you think he still remembers me blasting him out of the sky?" Shirou whispered to Hawkeye. The Hulk growled again.
"Yeah, you're dead after this," Hawkeye chuckled.
The Chitauri began roaring at the heroes in anger. The heroes formed a perimeter and the Hulk gave a triumphant roar in return. Suddenly, more Chitauri soldiers and giant monsters began flying out of the portal.
"Guys," Black Widow said.
"Call it, Cap," Iron Man said, waiting for orders.
"Alright, listen up," Captain America said, relaying his plan. Shirou took the moment to connect the Hulk to the link. "Until we can close that portal up there, we're gonna use containment. Barton, I want you on that roof, eyes on everything. Call out patterns and strays. Stark, you got the perimeter. Anything gets more than three blocks out, you turn it back or you turn it to ash."
"Wanna give me a lift?" Hawkeye asked.
"Right," Iron Man said. "Better clench up Legolas."
Iron Man grabbed Clint and flew out of sight.
"Thor, Emiya," Captain America continued, "you've gotta try and bottleneck that portal. Slow them down. You've got the lightning and you've got the magic. Light the bastards up."
Shirou nodded in compliance and used Medea's Trofa spell to teleport to the top of one of the skyscrapers. He noticed Thor had flown onto a neighboring skyscraper. With the link on, he heard Captain America give the Widow and Hulk their orders.
"You and me, we stay here on the ground, keep the fighting here. And Hulk. Smash."
As the others attacked the aliens down below, Thor began to blast the seemingly infinite amount of Chitauri soldiers out of the sky with the lightning of Mjolnir. Shirou helped by sending out a rain of crimson arrows now and again. When that wasn't enough, Shirou decided to get a bit more destructive. With a snap of his fingers, hundreds of copies of Mjolnir appeared in the air. Thor, hesitating for a moment, smirked and pointed his hammer at the sky. All of the hammers were sent towards the portal.
The attacks even hits one of the Chitauri monsters back into the portal and forcing the monster to explode. Deciding it wasn't enough, Shirou created more homunculus familiars to keep the alien army from getting too far. Of course, he knew the familiars couldn't do much against the giant monsters, but the Avengers had their own powerhouse, the Hulk.
The two then jumped from their respective skyscrapers so they could join the fight. Thor and Shirou landed on a Leviathan with the Hulk. The three then proceeded to smash the creature, Thor with his hammer, Hulk with his fists, and Shirou with the giant ax-sword of Hercules. The Hulk ripped off one of the monster's scales and Shirou stabbed the giant ax-sword into its flesh. Thor then brought the beast down with a powerful lightning infused strike at the sword. They crash into the International History Museum. The three stand still, admiring their handiwork when Hulk punches Thor. The Hulk smirks.
"Was that really necessary?" Shirou questioned. The Hulk turns, smirks again, and approaches Shirou, punching his own fist. Shirou backed away, slowly.
"Okay, okay. Save that rage for the bad guys, big guy," Shirou said, teleporting again.
This time he teleported on top of Stark's tower. Looking around, a middle aged man began firing a pistol at him. Easily avoiding and deflecting the bullets, Shirou disarmed the man and held him down. Seeing the man was being controlled, Shirou used his own prana to wash away whatever spell was on him. Shirou guessed this was Dr. Selvig, the man who was friends with Thor. Selvig, free from Loki's control, looks around in horror.
"What?" the scientist said, confused.
"It's okay," Shirou assured. "We've got it handled."
Suddenly, an explosion occurs and Shirou sees Loki crash into Stark's penthouse. Black Widow lands beside them and the Hulk crashes chases Loki.
"Why does the universe hate me?" Shirou wondered out loud.
"Just our luck I suppose," Widow answered.
Black Widow and Shirou leave the injured man to attend an even greater matter, the portal machine.
"The scepter," Selvig moans.
"Doctor," Natasha replies.
"Loki's scepter, the energy..." Selvig mumbles. "The Tesseract can't fight. You can't protect against yourself."
"It's not your fault," Widow assured him. "You didn't know what you were doing."
"Well, actually," Selvig said, "I think I did. I built in a safety to cut the power source."
"Loki's scepter," Shirou reasoned.
"It might be able to close the portal," Selvig offered. The man looks down. "And I'm looking right at it."
The two turn around to see all of the destruction.
"Go," Widow said. "Kill as many Chitauri as you can. I've got this."
Shirou smiled, and then, to Widow's horror, he summoned a long chain and slit his own throat.
"Shirou!" she screamed, grabbing on to him as blood gushed out of his throat. But Shirou didn't fall and his blood began forming a magic circle in the air. An eye appeared in the middle of the circle and in a flash of light, a beautiful Pegasus appeared.
"It's nice that you care," Shirou smiled, his neck wound had miraculously healed itself.
The magus then mounted the white winged horse and attacked a golden bridle onto it. The horse neighed loudly, and shot off, the two looking similar to an arrow of light. The arrow of light began smashing into Chitauri and blasts through the monsters like they were made of paper.
"I've run out of arrows here," Hawkeye said over the telepathic link.
Gritting his teeth, Shirou teleported again, having the Pegasus and the bridle disappear. He appeared next to Hawkeye, in a building. He then traced a bunch of arrows he had scanned off of Hawkeye and threw then onto his lap.
"There you go," Shirou said, teleporting again.
This time, the magus was in the middle of the street. Smirking, he summons a crimson red spear. The spear glows crimson red and he jumps.
"I hope you like this," he grins. Throwing the spear, he says its name. "Gae Bolg!"
The spear is launched at Mach 2 speed and creates a distortion of space to force the spear to split into numerous spearheads that hit each Chitauri soldier.
Satisfied with his results, Shirou landed near Captain America and Thor, who were beating off more Chitauri soldiers. Shirou summons his swords in the air and sent them flying through the enemy. Captain America got hit with an energy blast, and while Thor smashed the opponents away from his ally, Shirou summoned a traced Avalon and fused it with the Captain. Helping on to his feet, he let the high regenerative abilities of Avalon effect the soldier.
"You ready for another bout?" Thor asked.
"What?" Captain America said, fully recovered. Shirou detraced Avalon. "You gettin' sleepy?"
"I can close it!" Black Widow shouts on the link. "Can you hear me? I can shut the portal down!"
"Do it!" Cap screams.
"No, wait!" Iron Man objects.
"Stark, these things are still coming!" Shirou said.
"I got a nuke coming in, it's gonna blow in less than a minute," Iron Man reported. "And I know just where to put it."
"Stark," Cap said, realizing his intentions, "you know that's a one-way trip?"
"Save the rest for return, J," Tony says, ignoring him.
"Sir," they hear JARVIS on the link, through Tony. "Shall I call Miss Potts?"
"You might as well."
The three watch in awe as they see Iron Man, holding the missile, drag it off course from his tower and into the portal. Suddenly, the Chitauri and monsters fall down, dying all at once.
Seeing no choice, the Captain tells Widow to close the portal. Both he and Thor look down, but Shirou notices something with his reinforced eye.
"Look!" he shouted, giving a genuine smile. He pointed directly at Iron Man, falling down.
"Son of a gun!" Cap says, also smiling.
They wait for Stark to activate his thrusters, but nothing happens.
"He's not slowing down," Thor realized.
Shirou summons a long sword and turns it invisible with Invisible Air. Moving in position, he released both the technique of the sword and the Noble Phantasm.
"Tsubame Gaeshi, Strike Air!" he shouts, the blade releases a Dimensional Refraction effect, turning the blade into three at that exact moment. Powerful winds accompanied with each strike, and the wind flew at Stark, slowing his descent. It provided enough time for the Hulk to intercept Iron Man's fall. The two fall onto a bridge.
Thor, Cap, and Shirou rush over. Thor rips off Tony's helmet, but it appears it's too late. They stand around not sure what to do.
"▂▂▃▃▄▄▅▅!" the Hulk yells, and in that moment, Shirou was worried that the Berserker Hercules had somehow been summoned. But that worry soon disappeared when he noticed that the loud noise had awakened Tony.
"What the hell?" Tony yells. "What happened? Please tell me nobody kissed me?"
"What if it was Natasha who kissed you?" Shirou asks.
"Pepper would kill me," Tony chuckles. He tried to get up, but falls back down. "Ow, ow, ow! I'm just gonna lie here for now."
They look around.
"We won," Steve stated, surprised.
"Alright," Tony says, trying to break the tension. "Hey. Alright. Good job, guys. Let's just not come in tomorrow. Let's just take a day. Have you ever tried shawarma? There's a shawarma joint about two blocks from here. I don't know what it is, but I wanna try it."
Thor looks at Stark tower. "We're not finished yet."
"And then, shawarma after," Tony said.
"Sounds like a plan," Shirou says.
Scene Break
Loki was struggling on stairs, having given a beating from the Hulk. He rests and turns to find the Avengers staring at him, pissed.
"If it's all the same to you," the beaten villain said. "I'll have that drink now."
Okay, so here are some of my explanations to Shirou's powers.
When Shirou summoned the Pegasus, he did so by copying Medusa's chain perfectly. He summoned it by using the physical copying property of his powers. Let me explain. When Shirou copies a weapon, he can also copy physical abilities like Artoria's speed or Hercules's strength. However, Medusa's Pegasus summoning technique involves her blood. But Shirou has copied blood related abilities before. I'm talking about Excalibur and Caliburn, which act on the users Factor of a Dragon (the dragon blood infused into Artoria at birth). This, combined with the information acquired by copying Medusa's weapon, allowed him to summon the Phantasmal Beast.
When magic is involved, Shirou's alternate selves Solomon, Amakusa Shirou Tokisada, and a corrupted Justeaze Lizrich von Einzbern (via Angra Mainyu) makes Shirou practically the master of all magic. Solomon's mind and rings, along with their collective experiences, provide Shirou with all sorts of magic spells. Tokisada's Noble Phantasms and Solomon's Ring give Shirou the ability to use any spell and combined with the Einzbern Sorcery Trait Wishing, allows him to just spam said spells. Usually, that particular Sorcery Trait costs a lot of prana, but with Shirou's now infinite and inexhaustible reserves, well, it makes him extremely powerful. (When Rin comes, you can see what will happen when the perfect magus is completely upstaged by her originally hopeless apprentice in magecraft.)