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It always starts with a crime

Summary:

this is an au where Yokohama is a secluded spot away from japan and mha is trying to get more info on yokohama. The port mafia is getting them to stay away because obviously they dont need 'heroes' trying to get in so mori sends dazai and chuuya to UA as they are 16 to find the plans and take them to give the Port mafia.

Notes:

this is my first fic so please bare with me and i can't really remember who made this au but if u know please let me know. Also sorry if this is ooc (out of character).

(See the end of the work for more notes.)

Chapter 1: Im sorry what?!

Chapter Text

It was a rainy day when Dazai and Chuuya were called into Mori’s office to be told something they did not want to hear.

 

Dazai sighed as he opened the door to Mori’s office with Chuuya trailing behind him, “What is it this time Mori.”

 

Mori feigned hurt “What’s with the attitude Dazai? I'm only trying to tell you something important.”

 

“Cut to the chase I don't have forever”

 

Mori sighed “You’re no fun, but I have a mission for both you and Chuuya involving the heroes and trying to research Yokohama.”

 

Chuuya perked up at this

“Are you saying what I think you're saying..?”

 

Mori glanced at Chuuya, “not exactly but it may be similar. I'm giving you guys a mission: you are going to be exchange students from another part of Japan and going to a school called UA. It's a school for heroes. There you will study the students' quirks with their strengths and weaknesses and find the plan that UA has to invade Yokohama.”

 

Both Chuuya and Dazai pause

“I’m sorry what?!” They both practically yelled out.

 

Mori smirked knowingly, “Yes and your uniforms are on the bench behind you with your IDs.”

 

Chuuya looks behind him to find an ID with his photo and name, “oh my days you are actually serious and why are these uniforms so ugly?!”

 

Mori chuckled, “I know they aren't your usual style but trust me it will be worth it and I have one more thing to explain in this mission”

 

Mori paused for a second before explaining, “basically in UA they have quirks not abilities like us so don't go full out on your abilities especially you Chuuya-”

 

“HUH?! WHY ME SPECIFICALLY I’M NOT THAT OUT OF-”

Dazai cut off Chuuya before he could finish, “so basically we have to water down our abilities to match their so-called quirks because abilities are stronger than quirks?”

 

Chuuya glared at dazai before yelling, “WHY YO-”

 

Mori also cut off Chuuya “yes exactly so grab your uniforms and stuff because you guys leave tomorrow!”

 

Chuuya was pissed by now having been cut off twice and on their way out with their uniforms and IDs bickering.

 

Mori smiled and sighed and thought to himself ‘those two I swear’ while shaking his head.

 

Chuuya is now with the flags complaining about the mission.

 

Doc and Lippmann are chuckling while Albatross is helping Chuuya with his uniform while making fun of him.

 

Lippmann walks over and puts Chuuya’s tie on and turns Chuuya to the mirror.

 

“Chuuya stop being dramatic, you look amazing like always.”

 

Albatross fixes some strands of Chuuya's hair, “See you still look cool as ever.”

 

Piano Man nods his head, “I agree you don't need to worry the mission will go smoothly.”

 

Chuuya nods his head slightly, “thank you guys..”

 

Albatross smirks, “awww is the hot headed Chuuya getting all soft and gooey?” he teases Chuuya by messing up Chuuya’s hair a bit.

 

Chuuya gets mad but not really, “WHY YOU!”

 

The flags laugh and and Chuuya feels happier with the flags.

 

Dazai is currently with Oda and he is helping Dazai get ready and re-wraps his bandages.

 

“Dazai” Oda started, “Don’t go starting fights and make sure to keep Chuuya in check with that mouth of his.”

 

Dazai sighs, “I know that pip-squeak always runs his mouth but hopefully he will actually pay attention.”

 

Dazai and Oda were in the middle of talking when Chuuya kicks the door open and yells at Dazai

 

“Oi dazai! Hurry up you walking mummy we are leaving soon!”

 

Dazai rolls his eyes, “on my way chibi!”

 

On their way back to Mori’s office Chuuya runs into Kouyou

 

“Hey Ane-san”

 

Kouyou smiles, “Hello Chuuya you look good in that uniform, maybe switch up from the suits from time to time, you're going to end up like a workaholic and an old man with those suits.”

 

“WHAT I’M NOT AN OLD MAN!” Chuuya yelled before dazai leans down mocking Chuuya’s height before patting Chuuya’s head and saying

 

“Now now chuuya be a good dog and stay quiet while we go to Mori”

 

“Fine” Chuuya mumbled before they finally went to Mori’s office.

 

As they went into Mori’s office they saw their personal driver. They see Mori sitting in his chair.

 

“I see you guys are finally here. Next to me is your personal driver. He will be taking you guys to the UA entrance and a pro hero there will take you to the principal to give you guys your schedule. You will have the same class and be in class 1-A.”

 

Dazai blinks, “pro heroes? You mean like people actually go around like that detective agency?”

 

Chuuya glances at Dazai, “detective agency?”

 

“yeah they are like an organization or whatever that fights villains and criminals though they keep a very low profile.”

 

Chuuya nods with understanding, “ohh okay so like these pro heroes also fight against villains and criminals.”

 

Dazai gasps dramatically “woah the chibi is actually smart.”

 

Mori talks before they start bickering again, “exactly and I made sure they know nothing about you guys okay so if people ask where you are from, say you are from Tokyo.”

 

Mori checks his watch, “looks like it's time for you guys to get going, Hiro take them to your car.”

 

Hiro nods, “yes boss, lets go guys.”

 

They go to the private car, get in and drive out to Musutafu which takes about two hours. By the half-way mark Chuuya is out cold, sleeping on Dazai’s shoulder. Dazai stares out the window while Chuuya sleeps and he watches as they approach the UA entrance.

 

Dazai taps Chuuya’s face lightly, “Chibi we are here..”

 

Chuuys wakes up blinking and looks outside where he sees UA.

 

Hiro opens the door and they walk out where they are greeted by a pro hero who works at the school.

 

“Hello, my name is Shota Aizawa. I will be your teacher for this year.”

Notes:

This is my first time writing something like this so if you have any tips I would appreciate it and I hope you liked it, next chapter in a couple of days hopefully!