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English
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Published:
2024-06-11
Updated:
2025-05-23
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15,729
Chapters:
6/?
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23
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46
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Deku the Saiyan Hero

Summary:

Izuku Midoriya went through an incident that would change him forever and quite literally on the inside because he now has Saiyan blood in his veins and is about to have an adventure from beyond the stars when aliens from all over the universe comes to earth along with some danger that he will have to become the Saiyan hero Deku to protect the planet and grow stronger! BIG Harem.

Chapter 1: New Arrival from Beyond the Stars

Chapter Text

New Arrival from Beyond the Stars

The scene shows a young boy with green hair and eyes being pushed through a hallway on a table with blood on his face and breathing very heavily, and from the looks on the doctors and nurses' face that it is not a good sign.

"How is the boy? Still with us?" A doctor asked.

"It's a miracle that he hasn't been taken away to the afterlife, with all the blood he lost." The brown hair female doctor answered.

"But it's only a matter of time until the boy finally kicks the bucket, we need to do the blood transfusion fast!" The blonde nurse suggested, looking very worried for the boy.

"Don't worry, we got ourselves a donner with the matching blood type. I just hope it'll be enough." The doctor concerned.

"I'm concern about the guy complaining when our guys brought him in, against his will." The blonde nurse mentioned.

"We were desperate hoping the guy would know him, and we just brag him along. But I'm glad we did to bring him because he has the blood to save this boy's life." The female doctor explained.

"Guys, less chatting and more saving this boy's life!" The doctor gestured to the boy, reminding them that they have a life to save right now.

"Right, we gotta get going!" The female doctor agreed and put on her mask.

The boy could hardly hear what the doctors are saying with how his body is hurt extremely painful and his eyes are getting heavy to keep them open.

The boy soon closes his eyes allowing the darkness to take him into slumber, leaving his fate to the doctors and nurses to help him the best he could.

(Six Months Later)

"Izuku! Izuku, wake up!" A woman called out to her son.

The boy known as Izuku started to wake up from his sleep with a soft groan as he pushes himself up from the bed, letting out a yawn and stretching his arms up and back.

"Another day to get through and to make it a good day!" Izuku smiled and got off the bed and change out of his pajamas.

"Everything appears to be in order." Izuku looked at himself in his school uniform.

Izuku Midoriya is a 15-year-old boy, somewhat short for his age, his round face is framed by a short mop of fluffy dark-green hair which curls up at odd angles around his head, casting noticeably dark shadows onto itself. His eyes are large and somewhat circular, and his irises are the same shade of green as his hair. He has a set of four symmetrical freckles in diamond formations, one on each cheek. He wears the standard male high school uniform: a light gray blazer with dark turquoise trimmings over a white dress shirt and dress pants, along with a red tie which he doesn't do up properly, leaving it much shorter than how it should be. Instead of the plain brown shoes worn by the majority of the student body, he still sports his signature red shoes.

Izuku went downstairs to meet his mom in the dining room with his breakfast on the table.

"Good morning, mom." Izuku greeted.

"Good morning, sweetie. I hope you had a good sleep last night, considering that you were up late watching some videos again." Izuku's mom mentioned.

Izuku's mom, Inko Midoriya, has large and circular eyes. Her hair and eyes are also green, but in a slightly darker shade than her son's. Her hair is straight and shoulder-length, with a small and spiky ponytail at the back. She wears a pale pink light sweater with a white shirt underneath, a knee-length blue skirt, and white slippers.

"I couldn't help it, just watching those martial art videos makes me feel excited when those men were pushing their bodies through the limits!" Izuku expressed his interest in martial arts.

"It surprises me that you would be interested in that kind of sport, you weren't into that before." Inko mentioned.

"You were more into studying and learning a lot with analyzing before the… the… accident." Inko said with a stuttering tone of fear in her voice.

Izuku can understand the feat that his mom is feeling right now because of the accident that happened six months ago and how he almost lost his life, it was the most tragic thing that ever happened to him in his life, and it was so sudden that he could barely remember the incident.

"(I know I was caught by someone, and something happened, but everything else is fuzzy. I do remember seeing a man there.)" Izuku thought recalled little of that accident.

He really wishes he could remember seeing that man, but nothing comes up except for the very jet-black hair and strong-serious eyes he had.

"It was really a miracle that you were able to recover so fast from the hospital, the doctors said you wouldn't be able to move for months, but you came out within a few weeks." Inko mentioned.

"I know, it feels like my body just gotten a power boost or something." Izuku nodded while eating his breakfast.

"Just make sure you stay safe when going to school, okay?" Inko advised.

"Don't worry, mom. I'll be fine, nothing like that accident has happened to me and I have been training my body to be able to avoid the danger." Izuku assured that he is going to be fine.

Izuku finished his sixth plate of breakfast and puts them in the sink and drank his orange juice from a slightly big cup.

"Goodness, I'm gonna have to hit the supermarket today to restock the fridge again." Inko surprised.

"Sorry mom, guess my body just grew so much from the inside that I need to eat more." Izuku apologized, feeling guilty for having to eat so much than he should normally eat.

"Well, you're still a growing boy, so I don't blame you." Inko smiled, she doesn't mind.

"Okay, I'm off!" Izuku ran off to the door.

"Have a good day, and please be careful!" Inko repeated those words again. Being really worried for her son's safety.

Izuku ran off from his home, running through the streets of the neighborhood going fast as he is going about over 15 miles per hour which still surprises Izuku as he has never been this fast before.

"(After leaving the hospital, my body started to feel like it just went through a super charge of power and now I feel like I could go on for days!)" Izuku thought remembered how he felt the first time feeling this rush when he got home.

But then Izuku saw the light just change red.

"Oh no, I'm gonna be late if I don't get moving now?!" Izuku gasped.

With no other choice, Izuku ran faster and faster for the street then made a big jump going right over across the street and over the traffic lights all the way to the other side.

"Nice to know I can get through traffic like that." Izuku smiled and ran again.

Izuku made his way to his school, West High School, and looked at the time on his phone to see that he has over seven minutes to spare.

"Good, I'm on time." Izuku sighed in relief.

"I see you got here before me, Deku." A boy said.

"Oh, good morning, Kacchan!" Izuku surprised a little.

"Shut the fuck up! Are you trying to prove that you're better than me or something? Because let me tell you, nobody is better than Katsuki Bakugo!" Katsuki stated with an angry snarl.

Katsuki is a young man of average height, with a slim, muscular build, and a fair skin tone. He has short, spiky, sandy blond hair with choppy bangs that hang over his eyebrows. His eyes are sharp and bright red in color. He wears the West school uniform without the customary red tie. Underneath his blazer, he wears a white collared shirt with the top few buttons undone. His pants are worn loosely, causing them to sag at his ankles, despite him wearing a belt with them.

"Easy Kacchan, I'm not trying to be better than you! Honest!" Izuku waved his arms in defense.

"I just can't help it that my body feels different than how it was before." Izuku pointed out as he looks at his hands.

"Yeah, it was obvious to me that you're definitely different than before. It's shitass annoying that you're suddenly good at sports." Katsuki stated.

"Are you sure those doctors didn't pull a mad scientist experiment on your body in that hospital?" Katsuki asked.

"Pretty sure it's just normal stuff, including the blood transfusion of the man I still can't remember from the incident." Izuku explained.

"Whatever, just you watch me crush you in gym class today!" Katsuki believed that he is going to outdo Deku in gym class.

"But isn't today a short day for school?" Izuku asked.

Katsuki grunts starting to remember that today at school is a shorter day because of some stupid sport rally or whatever, just he'll just have to settle with the local gym and show Deku that he's stronger than him.

"Whatever, let just get to class." Katsuki moved toward the school.

"Oh, I can't! I have to get to the principal office to help welcome some new students who are transferring here." Izuku remembered and ran off.

"Fine, go ahead and welcome some extras. But we're still going to settle things at the gym!" Katsuki yelled loudly, spooked some of the other students around him.

(Principal Office)

"I'm here, sir." Izuku entered the office.

"Ah, Izuku, welcome. This here is one of the transfer students, Diane Envy." The principal introduced the girl.

"Hello, I'm Diane and it's very nice to meet you!" Diane greeted.

Diane is a young cute girl with purple eyes and medium length brown hair which is tied up into large twin tails. She has a well-endowed and curvaceous body. She wears the West High uniform for girls, mostly the same except for the dark blue-green pleated skirt, and a small, golden button on their ties. Breasts size: G-cup.

"(Oh wow, she's really cute!)" Izuku thought blushed shock.

"I'm so excited to be here! I never been to school before, but my parents were finally able to get me here through all the hard work they made and got me here!" Diane excitedly, moving closer to Izuku making nervous a bit more.

"Y-Yeah, I'm thrill to meet you too." Izuku said, trying to calm himself down.

"Just to warm you, I'm pretty strong myself. I've been known to be the strongest in my whole village!" Diane mentioned while flexing her muscles.

"Oh, that sounds cool! Maybe you can I could spare sometime." Izuku offered, feeling something within him sparks of interest to fight this girl.

"Sounds cool to me!" Diane said.

"Now, we just need to wait for the other three transfer students. They should be here any minute now." The principal said, looking at his watch.

But right after he said that everything in the room started to shake worrying the students and the principal thinking this might be a sudden earthquake which is affecting the entire school, and this shaking is getting a little worse.

"Emergency?! Everyone evacuate the building right NOW?!" The principal alerted the school through the speaker boxes.

Soon, everyone went outside trying their best to leave calmly as they could, but when they went outside something unexpected arrives.

It appears to be a giant ship that is shaped like a pyramid hovering above the school with green flaming fire coming out from the bottom, it moves around the school like it's trying to land somewhere.

"What the FUCK is that?" Katsuki asked.

"It's like we're being invaded by aliens?! This is so mess up!" One short purple hair male student freaked out.

"It's coming down! Everybody, move out of the way!" The gym teacher pointed out.

Soon, everyone moves away from the large spot where the pyramid ship is about to land going down gently until at the last several feet it landed down fast and hard causing the ground to shake for a second.

Everyone stood in place staring at the pyramid for a moment until it opens a door, and a platform came out as a walkway path down on the ground.

"What do you think it is?" Diane asked Izuku.

"I don't know, but I have a strange feeling that we don't have to worry about it." Izuku said, trusting his instincts.

A small figure steps forward from inside the ship though it's all shadowy from the light inside the ship, but then the figure steps out revealing herself to be a girl.

"Hello, Planet Earth! My name is Cleopatra Philopator Meyat VII from Planet Meyat, but you can call me Cleo for short, am here, along with my two sisters, to make your school fun with me being here! WOOO!" Cleo announced with her armbrace close to her mouth and speaker sound affect.

Cleo is a slender girl of medium height, with very dark grayish violet (and warm) hair that has horizontal golden streaks or highlights and olive tan skin. Her eyes are olive green as her overall color scheme is purple and gold. She also has a golden crown in the shape of a tiara with an ibis in the center on top of her head. She wears a white dress with a red sash as well as a gold necklace and bracelet with a red gem on the right arm along with golden brown sandals with one red gem on each. Breasts size: F-cup.

"What the fuck is happening right now?" Katsuki asked.

"No way, did we really just get a visit from real-life aliens?!" Diane freaked out with excitement.

"I think so…!" Izuku shocked a bit more than the others.

But then a hand snatches the armbrace-megaphone away from Cleo much to her dismay.

"Cleopatra, is it really time to celebrate our welcoming when you scared most of the students here and drop the ship?" The older-looking girl asked scolding.

"Chill out, Yosira. I got us here safely and nobody got hurt." Cleo pointed out.

"Tell that to failing to notice two vehicles under the ship that you just crushed!" Yosira revealed with scolding eyes.

Yosira has black hair is tied up in a bun and golden yellow eyes. She wears a white tunic with blue pants, a brown belt, and white boots. Breasts size: H-cup.

"Oh, huh, I'm sure it's fine. It's not like they forgot to renew their car insurance." Cleo hoped she's right.

But hearing that, the gym teacher's eyes widen with shock that he completely forgot to renew his car insurance.

"Oh man, dad would ground you for that." Another girl chuckled, walking up next to Cleo and Yosira.

"Don't think you're not off the hook for forgetting to turn on the anti-gravity feature to prevent the ground from shaking upon landing, Amsaja." Yosira glared, making the girl know reveal as Amsaja, Cleo's twin sister flinch.

Amsaja has a medium brown skin tone similar to Cleo, very dark desatured red eyebrows and eyelashes, and wears mostly desaturated dark blue lipstick. She also has multicolored hair, mostly grayish yellow, with dark moderate blue highlights in the front, and eyes with a dark greyish red iris and black pupil. She wears the darker version of Cleo's clothes with the accessories being the same except the gems are green. Breasts size: F-cup.

"Okay, that was my bad, but I got so inspired when we saw the view Earth from space that I got inspired to make a painting!" Amsaja explained with her eyes sparkling.

"You should know better when working with the control panels." Yosira stated.

"You know better when I get crazy with inspiration for art!" Amsaja yelled back.

"Girls, girls, you're not making our first impression look good right now." Cleo pointed out that everybody in the front yard of the school is staring at them.

This made Yosira and Amsaja realize that they need to make themselves look good and harmless so that everyone doesn't think they're dangerous.

"Sorry about that." Yosira apologized with a nervous chuckle, but she gave herself a little cough and calms down.

"We're here as new students of West High School, we were also told about having our escort." Yosira mentioned.

"Oh, yes! Izuku, show these… unique girls around with Diane." The principal said and pushed Izuku forward.

"S-So, you girls are really aliens?" Izuku asked shock.

"Oh yeah, far beyond the stars and all that. And you're going to love having us around!" Cleo grinned closer to Izuku, making him blush.


KO a new story is born and hope you all enjoy it!

I decided to make myself a new Dragon Ball Super crossover story with Izuku Midoriya from My Hero Academia as the main characters, he will soon see that his life will change forever with the arrival of his new alien friends and another thing that will change within him. Oh, and in case you are wondering, Diane is from the Seven Deadly Sins anime along with Cleopatra and the two girls from the cartoon are sisters here in this story.

There will also be some other characters from other shows, and harem loving for the Deku! You could say that the size of the harem is "Universal" than you can imagine.

KO comment, favorite, and follow through of how this new story will go!