Deku the One For All Legend (Bnha multi crossover fanfic)

The day of the Entrance Exams

   The day of the entrance exams has arrived and Izuku, Trunks, and Goten are all standing outside of the giant building of UA.
"Well, this is it." Goten said.
"I would be lying if I said I wasn't nervous." Trunks said.
"Same here. Thanks to all the people I've met, I feel like i've only got lucky to come this far." Izuku said.
"Well, I guess we should head inside!" Goten said walking towards the building.
Izuku started to remember the time he went to the hospital see if he had a quirk.

Flashback

Izuku was excited as can be going to find out if he had a quirk.
When he finally got there, the doctor did the tests.
"So... we got your tests back." The doctor said.
"I'm sorry... it's not gonna happen."
At this, Izuku felt like his dream just crumbled away into nothingness. He wanted to be a hero like All Might himself.
"I'm sorry sir, there must be a mistake. My Son wanted to be a hero for so long!" Inko said.
"I'm sorry. If you look here, you can see that he has a double jointed pinky toe that keeps him from having a quirk. So... if you're wanting to be a hero, i'm sorry. It's just not gonna happen." The doctor said.
After that, Inko and Izuku left. They didn't know that an old man over heard it after being discharged from the hospital, he didn't like hearing this, so he thought he'd give the boy some encouragement.
"Excuse me! May I have a word with your Son please?" The kindly old man said.
"Oh... i'm not sure, we don't really know you." Inko said.
"It's okay Mom, I think I could have a word with him." Izuku said.
"Okay, but i'm standing right here." Inko said.
"Don't worry young Lady, I won't do anything. I just want to encourage your Son a bit." The old man said.
"Young Man, i've heard what that doctor said, and I honestly don't appreciate of how he said that to you! Let me tell you something. You don't need some fancy quirk to be a hero! So if you want to be a hero, don't let some idiot like that tell you can't because you don't have a super power! I've seen people become heroes using Martial arts, or using their own smarts, magic even! I know, that last one sounds ridiculous. But my point is, you CAN be a hero! You just gotta believe you can and work harder than everyone else!" At this, Izuku lifted his head up with determination and happiness.
"Now you get out there and show the world that you can be a hero, and people will look at you and say "Hey! That hero is quirkless! I want to be just like him!" And when that happens, i'll be watching you!" The old man said as Izuku cried tears of joy.
"Yes! Yes! I'm gonna be a hero! I won't let you down sir! I'll be a hero that everyone can look up to!" Izuku said jumping up and down.

"Excelsior!"

Flashback end

   As Izuku thought of this he had tears stinging his eyes.
'Thank you... thank you all for believing in me!' Izuku thought mentally thanking everyone who got him so far.
Once he started walking after his two friends went in, he wasn't paying any attention and tripped on his own feet but flew back up to stand on his own feet so he didn't hit his face on the pavement.
"Whoah! You can fly!? That's so cool!" A bubbly female voice said.
"Huh?" Izuku said looking behind him. Izuku saw a familiar brunette girl walking up to him.
"I was about to use my quirk on you so you didn't hit your face, but since you can fly it looks like you didn't need my help. You must have some sort of flying quirk." The brunette said.
"By the way, you look familiar." It was at this that Izuku thought the same thing. He couldn't get the words out of his mouth since despite his power, he's still not used to talking to girls.
"Um. No, that can't be it... he probably didn't make it... but anyway, i'll see you inside! Bye!" The brunette said as she walked into the building.
'Is that the girl from that explosion?' Izuku thought.
"Hey! You ready?" A boy with gray hair asked.
"AHH! Y-yeah i'm coming." Izuku said.
"Heh, looks like we're all a bit nervous. I'm Lucas by the way, Lucas Rūnworth." The boy now known as Lucas said walking up to the building with Izuku holding his hand out to shake.
"I'm Izuku Midoriya, it's nice to meet you!" Izuku said shaking Lucas's hand.
"By the way, my mentor Wonder Woman told me you were trained under some of the most powerful martial artist's in the universe!" Lucas said.
"W-wait, how did she know about that!?" Izuku asked.
"She knows a lot of things, I mean she is one of the main leaders of the Justice League after all!" Lucas said.
"Wow! That's amazing! You must be extremely powerful! What's your quirk?" Izuku asked.
"Oh! Just call it Celestial Magic for right now, i'll explain later, for now we should head to our seats." Lucas said as he and Izuku sat next to each other in the stadium.
"Well, what are the odds!" Lucas said.
"Yeah! I wonder what we'll be doing in the practical exams." Izuku said.
"You'll find out soon bud." Lucas said.
As they wait with baited breath, Izuku didn't realize that his childhood friend turned bully was sitting on the other side of him giving him the biggest death glare.