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!)

When their Mafia boss orders them to broadcast their lives to the outside world, Dazai sees an opportunity: what if they could use this mission to escape? What if they could get out? But freedom comes with a price. The outside world doesn't trust ex-criminals. The Port Mafia doesn't forgive defectors. And two teenage criminals with blood on their hands must prove they deserve a second chance. This is a story about breaking cycles. About found family and hard-won redemption. About two boys who survived hell and chose to build heaven instead. About learning that your past doesn't define your future-and that even those who've done unforgivable things can choose to become heroes. CONTENT WARNING: This work contains explicit violence, graphic depictions of death, references to child abuse, experimentation on minors, self-harm, suicidal ideation, PTSD, and themes of survival in extreme circumstances. It includes depictions of organized crime, murder, and the psychological trauma resulting from prolonged exposure to violence. Additionally, this work contains a romantic relationship between two male characters. Reader discretion is strongly advised. CREDITS: "The Dangerous Boys Escape" - by ChuuyaSimp ( ͡° ͜ʖ ͡°) (@KittyGLMM). "Cascade of Colors; I See Right Through You" by HelpmeplsImsolost (@HelpmeplsImsolost). All original concepts from Bungo Stray Dogs belong to Kafka Asagiri and Sango Harukawa. My Hero Academia belongs to Kōhei Horikashi. This is a transformative work of fan fiction, created with the deepest respect for both series and the fanfiction community that keeps these characters alive in new and meaningful ways.

They were the Port Mafia's deadliest weapon-Soukoku, the fearsome Double Black. Two fifteen-year-old executives bound by blood, violence, and an obsession so complete it terrified everyone around them. When their boss attempts to sacrifice them for political gain, Chuuya Nakahara and Dazai Osamu make an impossible choice: kill him and escape over the Barrier into hero society. But leaving Yokohama doesn't mean leaving their past behind. Now trapped in UA High School, they must navigate a world of heroes who can never understand what they've survived. Chuuya's possessive protectiveness borders on violence-he'll destroy anyone who threatens Dazai. Dazai's suicidal tendencies and manipulative genius make him both brilliant and dangerous. Together, they're codependent, obsessive, and utterly devoted to each other above all else. As the Port Mafia hunts them and hero society demands they become something they're not, Chuuya and Dazai must decide: can two weapons forged in darkness learn to protect instead of destroy? Can their obsessive love become something more than survival? And when forced to choose between their past and their future, will they burn the world down to stay together? A tale of tactical genius, brutal efficiency, possessive devotion, and two boys who love each other enough to become monsters-or heroes-depending on who's asking. "You're mine. I'm yours. Everything else is negotiable." CONTENT WARNING: Violence, references to child abuse, suicidal ideation, murder, unhealthy codependency, possessive behavior, organized crime, trauma, mature themes. INSPIRATION & CREDITS This story was inspired by the fanfiction "Cascade of Colors; I See Right Through You" by Helpmepsimsolost. Bungo Stray Dogs characters (Chuuya Nakahara, Dazai Osamu, Port Mafia, etc.) created by Kafka Asagiri and Sango Harukawa. My Hero Academia characters and settings created by Kōhei Horikoshi

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

⚠️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.

Dazai is a mastermind at hiding behind a mask of fake emotions covering up nothing but an empty shell. At least thats what he tells himself. This story is set when Dazai is at the ADA. TRIGGER WARNINGS Mori-Pedophilia-self harm- dazai being dazai- suicide- sadness- disasociation- panic attacks- mori being a psychotic greasy bitch- Tortue, I will ass Tw at the start of chapters too.

Sad sad sad one shots idfk maybe drabbles :3 No consistent update schedule, just am mostly proud of my writing within this.

赤 - Red. "Does it hurt?" Dazai laughed, "not anymore". Trigger warnings on the first page ！！

I'll explain in an author's note :3

Dazai Osamu is chosen to return to the Port Mafia, he knew it of course, there was no other contender for the slimy boss to choose. He accepts it, atleast he gets to see his Chibiko more often. The agency however are very surprised at seeing the more violent and calculating side of Dazai compared to the happy go lucky and lazy man they are used to knowing. Through many team ups tey figure out more and more about their previous co-worker.