I do not own One Piece or My Hero Academia that belongs to their respected owners
Trailer (Use One Piece Stampede trailer 3 soundtrack.)
An abandon lost Prison in the middle of the sea
"So kid I have a proposal for you..." said AFO to a boy in his cell (think of Tai Lung's shackles Kung Fu Panda)
Izuku opened his green eyes which turns red in the darkness.
"Take my offer! It's just that simple! IF YOU DESIRE FOR FREEDOM IS GRAND ENOUGH! All you need to do is…Eliminate All Might's Successor!" AFO said
At the training grounds in the Beast Forest
"All RIGHT!" Ochako yells with her fist in the air.
"We're here!" Eri yells in excitement as the two got off the bus.
Ochako quirks Zero Gravity and One For All.
Eri quirk Rewind.
A normal summer camp/training camp for Class 1-A and 1-B.
"All right we're here to make you and your quirks stronger so let's do this," Tiger said
But a simple summer camp fun turns into a nightmare.
"I have a bad feeling for some reason," Shoto said
Inasa Yoarashi in a fighting stance (he's here because he swallows his pride to be in the school with Shoto)
At the mountain ledge.
"All right kid show us what you got," Wolfram said
Ochako kicks Muscular away from Kota and Muscular ran for Kota again and tried to grab Kota.
"KOTA!" Ochako yells
But then…
"What were you doing?" Izuku asked with venom in his tone while grabbing Muscular's arm.
"Deku? Is that you?" Ochako thought
Cue One Piece Stampede theme song.
Villains and soldiers running to or from something then got blown back.
A grim scenario ensues on both sides.
"He was a part of the Roger Pirates Izuku Midoriya also known as Douglas Bullet "The Demon Heir", a monster of a child," Vlad King said.
"You lied…" Izuku/Douglas coldly
Izuku Midoriya Pirate name Douglas Bullet Demon Heir. Quirkless. DF Clank Clank Fruit. Haki all three. Formerly of the Roger Pirates.
BE AMBITIOUS
"With this gear I recreated and these quirks I'm UNSTOPPABLE!!" Wolfram said with a smirk.
BE THE STRONGEST
"You CAN'T BEAT ME! I'M GOING TO WIN!" Izuku/Douglas yelled as he and Mirio clashed.
Dabi and Shoto clashed with flames.
BELIEVE IN YOURSELF AND IN OTHERS
"Deku!/PAPA! Don't GIVE UP!" Ochako/Eri yelled
"This is a government order to kill the boy!" Akainu said (couldn't resist to put him into the story)
An army of Pacifistas appeared.
"No Way!" Bakugo yelled
Izuku/Douglas punched Tiger with haki.
"I'LL DESTROY YOU ALL!" Izuku/Douglas absorbs the warships Izuku/Douglas summon through Dyna Capsules. And making the mech from One Piece Stampede.
Muscular thrown into All For One. Many Heroes and villains struggle to get up. Bakugo on the ground on his back.
No one is safe from this legendary monster.
This Legendary monster destroys heroes and villains alike.
"KACCHAN!" Izuku/Douglas yelled as the robot arm grew bigger and covered in haki.
Bakugo's eyes widen.
CRASH!
"I'm not worry," Ochako said
As the screen flashes with villains (Vanguard Action Squad, Kurogiri, Shigaraki, and AFO) and heroes (Bakugo, Kirishima, Shoto, Momo, Tenya, Inasa, the Big Three, and All Might)
"He's not going to hurt me because….." Ochako said as her words faltered.
Two Dream Teams on both Sides.
"Because he's Deku!" Ochako said as Izuku held Ochako close to his chest.
In the end, which side will he choose?
MHA: Douglas Bullet STAMPEDE!