Notes

"Text" = Speech

'Text' = Thoughts

OK KO:

characters have stayed exactly the same, only the country they live in has changed. The MHA version of Japan is pretty diverse anyways. In other words, Peter Parker is still white, but his family has lived in Japan for several generations.

2. This is a Spider-Man AU, not really an entire Marvel AU. So only Marvel characters with a close relationship to Spider-Man will be included.

Also For those asking, I have no plans to go past the Overhaul arc at the moment, but it's not completely off the table

Moments Earlier,

Izuku Midoryia, Hero Name: Deku, walked down the streets of Downtown Tokyo wearing his hero costume. As he walked he looked around the surrounding area for any suspicious activity while glancing at the map on his phone. Sir Nighteye had given him, Mirio, Centipeder and Bubble Girl a map showing areas where Spider-Man was most active. The three had decided to split up to cover more ground and there was a lot of ground to cover.

"*sigh*...No sign of him anywhere," Izuku thought to himself. Izuku looked up at the night sky thinking back to the meeting they had yesterday.

"Other than this map, do we really have nothing on this guy?" asked Mirio.

"Yeah, there must be some clues we can use to find him," said Izuku.

"As a matter of fact, we do have one small lead..." Nighteye pushed up his glasses.

"Really?! What is it?!" asked Mirio.

"Patience," said Nighteye, pulling out a photo of a man with short brown hair and a plague mask, "This man's name is Chisaki Kai, he's the father of the girl that was taken."

"What's with the mask?" Mirio commented.

"Maybe he has some sort of condition?" Izuku suggests.

"I've had my eyes on this man for a long time now," Nighteye explained, "I believe him to be the leader of the Shie Hassaikai, a yakuza group. However I don't have any proof that he's involved in any illegal activities."

"So you think Spider-Man has some connection to this yakuza group?" Izuku theorized, "And that's why he took his daughter?"

"I do think it's a possibility. Perhaps he's an ex-member after revenge, or maybe he's working for a rival group," said pro-hero, "To be honest, one of the main reasons I've decided to join this investigation was to get closer to Chisaki. Hopefully capturing this vigilante will bring us one step closer to bringing the Shie Hassaikai down."

"Alright! Two birds with one stone!" cheered Mirio.

"However, despite whatever is happening between Chiskai and Spider-Man, his daughter Eri is innocent and saving her should be your first priority," said Nighteye.

"Of course, Sir!" said Izuku and Mirio together.

"GRAAAAHHH!"

Izuku was snapped out of his thoughts by a horrific screaming coming from a few blocks away.

'Ah! Some's in trouble!' thought Izuku

Izuku activated his Full Cowling, jumping on top of a building and rushing towards where the scream came from. As he got closer he heard another loud scream, "DDAAAAHHH!" followed by silence.

Then Izuku saw him. His eyes went wide as he gazed upon the scene of Spider-Man standing over an unconscious man. After the momentary surprise, Izuku jumped into the air, clenched his fist and launched towards the vigilante.

Present,

Peter and the green haired boy stared down at each other.

'Who's this guy? If he's around my age, he can't be a pro. A sidekick maybe?'

"So are you looking for an autograph or something?" Spider-Man jokes, "Because while I appreciate my fans, I don't like people being handsy."

'Is he really making jokes at a time like this?!' Izuku shook his head, "Who's that man, you're holding, did you hurt him?!"

"Oh don't worry about this guy, he's just learned the hard way that you should never use drugs," Spider-Man put down the unconscious man, webbing him to the ground, "So who are you supposed to be, Broccoli Boy?"

"No, My name is Deku!" the hero yelled, "Now where's Eri!"

'So He's looking for Eri. Hmm, his arrival was very convenient. He showed up right as I took down some of Overhaul's men. Could he be on his payroll?' Peter pondered.

"Deku huh? That's an odd name," Spidey quipped, "I personally like Broccoli Boy better."

''Don't play around!" yelled Deuku, "What did you do to her?!"

"I didn't do anything to her." Spider-Man stated, "You should ask her creep of a 'father' instead."

'So he does have some connection with Chisaki,' thought Izuku, 'But what exactly?'

"Now if you don't mind me, I'll be taking my leave," Spider-Man shot a web line upward, taking off from the ground.

"Oh no you don't!" Deku jumped into the air, kicking at the vigilante's head. Spider-Man barely dodged in time, Deku's kick nearly grazing his chin. Spider-Man let go of his web line and landed back on the ground.

'Woah talk about a close shave,' Spider-Man rubbed his chin, "Listen pal, I don't want to have to hurt you. So leave before I slap you silly."

"I'm not letting you go until you tell me where Eri is!" said Deku.

"Alright, don't say I didn't warn you!" Spider-Man shot two web lines at a dumpster in the alley, throwing it at the hero.

Deku responded by smashing the dumpster to pieces with a mighty kick, garbage flying everywhere. While he was distracted by the dumpster, Spider-Man shot two web lines at Deku, sticking to his chest. Spider-Man pulled on the lines, causing Deku to be sent flying towards Spider-Man.

"Wha-AAHHHH!" Deku screamed as he was pulled towards the vigilante.

Spider-Man punched Deku square in his face, making the hero go flying backwards. Deku hit the ground, rolling across the ground a couple times, before getting back on his feet.

"You like that Broccoli Boy!" Spider-Man taunted.

"Grrrrrr," Deku grit his teeth, launching himself towards the vigilante. Deku threw out a flying roundhouse kick, which Spider-Man ducked under. Now behind him, Deku kept up the pressure, sending out a flurry of quick kicks, Spider-Man expertly dodging each one of them.

"So what's your quirk anyways? Let me guess, you get stronger from eating broccoli. Just like Popeye-" Spider-Man was interrupted by Deku punching him square in the face.

"Detroit Smash!"

Spider-Man was sent flying out of the alley, slamming hard against a parked car and falling to the ground.

'...Ow...this guy sure packs a punch...' Spider-Man slowly picked himself off the ground. One of the lenses on his mask was now cracked.

"You interrupted my joke," quipped the vigilante, "Not cool man."

"You're still joking even after that?!" questioned Deku, "Just stay down, I don't want to hurt you anymore than I have to."

"Please, my Aunt hits harder than you!" Spider-Man got into his fighting stance, "C'mon let's go!"

Spider-Man fired a barrage of webbing at the hero, Deku dodged them quickly by bouncing between the walls of the alleyway.

"Hey wall-shenanigans are my thing!" Spider-Man jumped up, grabbing Deku midair and throwing him upwards, "Upsy-Daisy!"

Deku landed on the roof of a building, and quickly got back on his feet.

"Did you enjoy your trip?" Spider-Man landed on a water tower on the same building, "Y'know Broccoli Boy I must say I'm disappointed. We've been fighting all this time, yet you've used none of your broccoli abilities."

"How could you..." Deku said bitterly.

"Pardon moi?"

"How can you not take this seriously! You kidnapped an innocent little girl, and you can do nothing but tell jokes!" Deku clenched his fist.

"..." Spider-Man stared silently.

"I'm not a Broccoli Boy. My name is Deku!" yelled Izuku, "And I'm going to stop you!"

Deku grabbed one of his arms and flicked his finger, "8% Delaware Smash!"

"Wha-" Spider-Man was hit by the small concentrated wind blast, launching into the air. The attack didn't really hurt, but it was enough to catch the hero off guard."

'He used the wind pressure caused by that attack as a projectile?!' Spider-Man theorized, "And that was only 8% of his power?!"

"Manchester Smash!" Deku slammed his foot down towards the vigilante. Spider-Man barely managed to dodge the attack midair, kicking Deku back on the rooftop.

Still midair, Spider-Man shot two web lines at the rooftop. Pulling hard he launched himself towards the green hero.

Deku blocked the attack with his shoulder, getting pushed back in the process. Spider-Man jumped off Deku like a springboard. This pushed Deku slightly off guard, leaving him open for Spider-Man to stick webbing at his face.

"Ah!" Deku panicked, attempting to pull off the webbing. Spider-Man took this opportunity to hit Deku with a flurry of blows. To top it off Spider-Man fired a web line at Deku's chest, before swinging him around a couple of times and throwing him into the water tower. Water poured out of the Deku-sized-hole he made.

"Make sure to always wash your vegetables..." Spider-Man joked a little less cheerful this time.

Inside the hole Deku began to think up a strategy, 'This guy is tough, I might be stronger, but his speed and his webbing make him nearly impossible to hit. It's almost like he knows how I'll attack beforehand. Mind-reading? Precognition? Or is he just that good of a fighter? I don't know if 8% of One for All is going to be enough to beat this guy. In that case...I'll have to go even further beyond. Plus Ultra!' Deku's body began crackling with green lightning.

'Spider-Sense is tingling!' thought Spider-Man

"20% FULL COWLING!"

The water tower exploded, sending water and debris everywhere, and leaving Spider-Man momentarily distracted. Deku took this opportunity and shot towards Spider-Man grabbing his face and smashing it into the ground.

"I've got you now!"

Deku began dragging Spider-Man's face across the rooftop, before throwing his body into the air. Deku followed him into the air, raising his leg.

"Time to end this!" yelled Deku, "Manchester Smash!"

Deku's foot connected to Spider-Man's chest, sending the vigilante flying into the alleyway below. Spider-Man hit the concrete hard enough to leave a small crater.

Deku landed on the ground before falling over in pain, "Argh! I-I guess 20% is still a little too much for me...at least it's over now..."

"In...*huff*...in your dreams, Broccoli Boy..."

Deku looked in shock as Spider-Man got off the ground. His costume had been wrecked, and he was bleeding in multiple places yet he was still standing.

"...I won't go down that easily, and I won't go out alone!" yelled Spider-Man

'Not even 20% was enough! What can I do? If I go any further I'll destroy my body. And I've been pushing myself as it is...' Izuku thought back to Eri, the whole reason he was doing this, "No, I can't back down now. That girl needs me to save her, and this may be my only chance to find her. So even if I destroy my body in the process, I'm going to win. Just like how All-Might would. I'll win, I'll win this for you Eri!'

'I'd hate to admit it, but I'm reaching my limit. This guy is strong, fast, and smart. I've landed some good blows, but he's still only using 20% of his power. Not to mention, I'm beginning to run low on web fluid. I don't know if I can win this...' Peter thought back to Eri, the abused girl that put her trust in him, "P-Please, please don't go."

'No I can't lose here! If I get captured, what will happen to Eri? If I get unmasked, Overhaul will come for her and Aunt May! No I can't let that happen, I've already promised that I would protect her. So I'm going to do it, just like Uncle Ben would have wanted me to. I have to win, I have a responsibility to uphold!

Both heroes clenched their fists, and stared each other down. Spider-Man shot two web lines at the ground, making a web-slingshot. Deku's body crackled with energy even greater and more furiously than before, his arm glowing red.

"ARRRGGGHHH!" Spider-Man pulled on his web lines, stretching them to their limits before letting go.

Deku launched off the ground, arm raised, "100% DETROIT SMASH!"

Time began to slow down as the two heroes shot towards each other.

Peter Parker and Izuku Midoriya. Both fighters were pushed to their limits. Both were determined to win, but who will win? Using 100% of One for All, Deku was stronger. However his strength came at a cost of destroying his body. Spider-Man was faster and more agile, and his Spider-Sense made it near impossible to hit him. But Peter's carelessness and joking attitude often caused him to be taken by surprise. Both were very smart, Izuku had studied quirks his entire life, while Peter was a genius of science. Izuku studied and trained at U.A. the best hero school in the world, with some of the best heroes in Japan. While Peter was on the streets, stopping crime and fighting some of the most dangerous villains in Japan. They were very evenly matched, neither without a strength, the other couldn't compensate for. So what happens? Who wins? Well in situations like this the winner is the one with the stronger will...that is the difference between heroes.

Right before the heroes collided, Spider-Man shot a web hitting Deku directly in his face. This completely threw Deku off balance and allowed Spider-Man to land a mighty punch to Deku's head. Spider-Man didn't stop there. Jumping from wall to wall Spider-Man landed multiple blows from various directions, tying Deku up in a massive web as he attacked.

"MAXIMUM SPIDER!"

Spider-Man landed one final kick to Deku's head, knocking him out. Falling to the ground Spider-Man admired his work. The web was huge and covered nearly the entire alley. In the middle was the unconscious green hero wrapped in a cocoon.

'I did it Eri, I won,' Peter thought to himself smiling.

"Let this be a lesson Broccoli Boy-no, Deku. With Great Power Comes Great Responsibility..." Spider-Man began to limp away, "...So don't mess with the Spider-Man."

This is my first time writing a fight scene like this so I hope you enjoy it. If you're wondering where Daredevil was during that fight, it'll be addressed next chapter. If you're upset that Spider-Man was able to beat Deku, this isn't Death Battle. Spider-Man fights and defeats characters stronger than himself all the time in the comics, so it stands to reason he could find a way to beat someone like Deku.