"You will both be undertaking long term stealth missions elsewhere, but you won't be operating together for the most part. Dazai-kun, you've heard of UA high school right?" "Of course I have, it's like the most popular hero school in Japan or something. And now you're going to tell me I have to live my dreams and become a hero." Dazai jokes. The older man makes no sound, and Dazai turns to look at him. "Wait. You're serious?" Mori sighs, "Dazai-kun, you will be infiltrating UA high school and posing as a student there. You've already got experience in stealth training, but it will be a shame to let such a valuable executive go.." ------------- Dazai and Chuuya are sent on missions to infiltrate opposite sides of two parties that Mori has deemed a threat to the mafia, and to simply gather information from both sides. Is there more to this assignment than what they were informed of? Cover art credits to @myfavouriteteddybearisamouse33 on ao3!! this is originally an ao3 work and is still updating... if you want quicker updates, it'll be on my ao3 @Tinfoilhats Tumblr: https://www.tumblr.com/blog/tinfoilhatsss Ongoing Spanish translation: https://www.wattpad.com/story/356793572-i-don%27t-smoke-bsd-boku-no-hero-crossover by SpriteSweet !

Shouta Aizawa after having an affair with his girlfriend, became single. He's stayed like that ever since but his girlfriend was pregnant and gave him the child. Aizawas always been fond of children so he raised the child up and named his Osamu Aizawa. But one day his son went missing, he was devastated and went into deep depression hinting some of the bags under his eyes. He became a teacher at UA when a mysterious boy is found roaming the streets alone, he says his name is Dazai. He won't mention his first name but told aizawa it was his last name. Aizawa suspects something of this boy but let's it slide, the boy banters about wanting to be a student at UA and when the time comes passes the entrance exam though sadly only makes it to the general studies course. This Dazai though is the one and only Demon prodigy from the port mafia of the city yokahama, that closed itself off from Japan years ago in a Great War when quirks appeared. (Enjoy!)

Young, 13 year old, Osamu Dazai is sent to infiltrate UA highschool, a hero school in Musutafu!

Mori, being the leader of port mafia he is, decided to invest in hero society. Of course that was just a front for getting more information. With that he invited the most known hero academia to Yokohama. And who else would he entrust these naive heroes to then his most trusted subordinate, Dazai.

It's Bungo Stray dogs and My Hero Academia. What could go wrong? In MHA it goes up to the Overhaul Arc, then I throw it to the side. Hooray! Bungo before the Hunting Dogs. Idea is not mine. I dunno where the og idea came from, but I'm taking it and doing what I want with it.

Without reason or warning characters from Bungo Stray Dogs end up in the world of My Hero Academia. With no record of their crimes or even the existence of the Port Mafia the best course of action is to stay out of trouble and survive school in the world of heroes. Technically low effort as I pretty much just made it up as I went along and I didn't do any research or review, as I had no desire to rewatch My Hero Academia, and the story is more abridged than it could be. Characters and universes belong to their respective creators, I just put the crossover together. I do my best to keep characters at least close to canon and try my best to keep headcanons to a minimum. Personal rating of the story: 13+ for Dazai being Dazai, but otherwise it's quite clean. (For any potential MHA fans who aren't familiar with BSD, but want to read a crossover, I suggest just doing a quick search for "Osamu Dazai", regardless of which Dazai pops up first, it should explain the rating reasoning pretty well.) To artists, especially commission artists, please read the afterword before asking about doing illustrations/comics and please confirm that you've read the afterword if asking too. (I had to come back and add this because I keep getting asked and would like to avoid awkwardness as much as possible.)

In a world that exalts Heroes and worships Quirks, the port city of Yokohama stands tall as a feared anomaly. Isolated by a mysterious mist and governed by its own laws, the outside world knows it as a "Criminal Paradise" ruled by the Port Mafia. However, the reality is far more complex; the city is the focal point of reality itself, maintained by a fragile balance between three organizations through the Tripartite system. Following the USJ incident that shook UA Academy, a secret agreement brings two figures from Yokohama into the heart of Hero society: Dazai Osamu and Edogawa Ranpo. They come not to save the world as heroes, but as observers and guardians of humanity's greatest secret. Yet, as Dazai attempts to adapt to the naive idealism of the Class 1-A students, an old shadow begins to creep through the chaos sown by the League of Villains. Behind the curtain of a conspiracy involving the symbols of peace and evil, someone is reweaving the threads of destruction that were once severed-someone who believes the best way to save the world is to erase all power-users from the face of the earth. Dazai realizes sooner than anyone that the echoes of the rat's laughter have not truly faded, and the chessboard he left behind in Yokohama is now expanding across the entirety of Japan. --- ### **{WARNING!}** • Typographical errors • Grammatical errors • Punctuation errors • Violence and blood • Bad words • Suicide attempt • Bad English because it's not my mother tongue • Profanity • Heavy conflict • Alternate universe (AU) and world-building • Neutral alignment • Update schedule depends on mood • Any similarities to other works are unintentional, as the concept of Yokohama as an isolated city is a common trope.

I WORTE THIS STORY YEARS AGO SO THIS IS YOUR ONLY WARNING!! Class 1A has been invited to Yokohama to shadow the Armed Detective Agency to learn more about being heroes but when they arrive they didn't expect what was about to happen........ || Disclaimer: I do not own either of these animes nor do i own any of the characters or even the photos i will be using in story ||

While on duty, Pro hero Eraserhead (or better known as Aizawa to his friends and family) Runs into a scrawny teen in an alleyway. Aizawa's sense of justice forces him to take the boy under his wing, unaware of his true nature as the Port Mafia's own Demon Prodigy. This is from A03, so updates might be pretty inconsistent depending on if I remember to update this as well :,) This is a remastered version of This Boy's too Young to be Singing the Blues, which is a fic I worked on that I have now abandoned to rewrite.

Yokohama has been the talk of Japan since Quirks first appeared. It was the only city in the world that Quirks did not appear in, due to a barrier protecting the city. | | | | (A lot of things will be changed, you will understand more as you read. But I will give a brief summary of changes: -The abuse Akutagawa went through with Dazai was minor and resembled actual training. HE WAS A GOOD MENTOR in other words. -Mori isn't Pedoph!l!c in this and he actually treated the kids in the PM as if they were his kids. He was only harsh in words when he needed to be, like a strict parent. -Also wanna say here that none of the relationships are toxic in anyway and they are actually relatively healthy. -Also wanna mention that while the PM members were treated better, the PM is still a "criminal" organization and still commits crimes for the sake of Yokohama *most of the time*. -Just saying this here: the DOA will not be making appearances but they will be mentioned. The hunting dogs will be mentioned as well, but start to make appearances at ch.27. -There are more changes but these are just the main ones!.) Now some warnings: -Gore Scenes Described -Violence -Mentioned Abuse -MLM -WLW -Might have *some* NSFW content -BNHA characters might be a little naive *this is just how I choose to write them for this book* -Discussion of murder -You're fav character from BNHA might not be how you want. Some characters will be unbearable at times. This is due to how they views things as black and white. -This book will not have any BNHA ships explicitly stated. -In this book, Abilities are way stronger than Quirks, just warning. -MINETA Now Timelines: Bsd: no timeline but definitely *future* because of how things are. MHA: shortly after USJ, instead of the training camp arc, they go to Yokohama.