[Crossover] Disqualified from Being Human and Losing My Mind

[!!!!! A mountain of personal headcanons !!!!!]

I read a fanfic about Boss Dazai and felt so bad for him. Then I read a fic about raising Dazai and felt heartbroken, so...

With blood rushing to my head, I impulsively decided to write about Boss Dazai and give Armed Detective Agency Dazai a hard time!

This is a completely self-indulgent work, written in a burst of passion. I got carried away and threw my brain into a black hole. I'll write whatever comes to mind.

Warnings:

[1] Boss Dazai is gender-swapped and is a girl who transmigrated from the real world. She has one secret identity layered over another, until she ultimately reveals herself as Boss Dazai♂.

[2] Boss Dazai♀ transmigrates into Bungo Stray Dogs and forgets her past. In other words, she grows up from a newborn baby with an adult's mind. She is Boss Dazai, but after transmigrating into the world of Armed Detective Agency Dazai, she regains her memories.

[3] I want to write a Double Dazai ship, but I'm worried I won't handle it well. So if there's a ship, it'll be Double Dazai; otherwise, there won't be any romance.

[4] The author only ships the bond between the Double Black duo as brothers, partners, best friends, close friends, and family.

[!!!! I DO NOT SHIP DOUBLE BLACK ROMANTICALLY !!!!]

Theme: I want to cause trouble! As long as it doesn't kill me, I'll keep pushing my luck.