crossovers
6 stories
The Demons secret| MHA + BSD| by HAZAYT
HAZAYT
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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!)
Magic and Mystery Coil by Allegory_for_Hatred by love4toh
love4toh
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Dazai's second year at Hogwarts starts with a bang! Between Mori's latest orders, Snape's investigation, and media-fire coming from all angles, Dazai certianly has his work cut out for him. But he isn't going down without a fight. With a steadily-growing gang of friends (subordinates!) at his back, Dazai might just stand a chance of making it through his second year alive. ...or maybe not. Honestly, Dazai isn't picky. ⚠️THIS WORK ISNT MINE IT IS MADE IN AO3 BY THE USER MENTIONED IN THE TITLE⚠️ If you are able to go read it on AO3 support the creator there, this is for the people who dont have access to AO3
Magic and mystery by Allegory_for_Hatred by love4toh
love4toh
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⚠️This work is not mine!!⚠️ The user in the title is who made it and they are on AO3 if you have access to AO3 go read it on there and support the actual creator Dazai is going to Hogwarts-which is crazy because he doesn't have magic. He has a nullifying ability, for goodness' sake! Not that it matters. Dazai is still willing to stick around and cause trouble before he gets shipped back home and stuck in his room again. And this Quirrell guy is definitely up to something. So that's a good place to start.
Mission Yokohoma (soukoku) by Kenmasyellowhairdye
Kenmasyellowhairdye
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    Parts 24
when 2 of the top agents in the port mafia and ADA come together to go to the world of MHA, how long can they hold out their true identities until they're found out, and what's going to happen when they do get found out.
The Grey Heroes (MHA x BSD) by Gr8Username1
Gr8Username1
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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.
This School Increases My Urge For Arson by Aoibbb
Aoibbb
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    Parts 17
Chuuya Nakahara got into an argument with his partner, Osamu Dazai. Now, he's riding his motorbike through Yokohama as a way to cool off. But when he swerves off of the road to avoid hitting two pedestrians and gets knocked out, he wakes up to see two Pro heroes in his hospital room. Chuuya then has to attend a prestigious school despite hardly being able to read, figure out how to get back to the Port Mafia, to apologise to Dazai, and why this old hobo wants to adopt him so badly. Basically me giving Chuuya a "normal" teen experience, and Dazai suffers for later angst <3 cross posted on ao3 on the user aoibb :3 - but it is on private to avoid access of ai and bots