Where Every Scroll is a New Adventure
Yosano: Hey, Dazai, who's your favorite singer or band?
Dazai: I don't really have one.
Yosano: Oh c'mon pretty boy, everyone has one.
Kunikida: It's propably arctic monkeys.
Dazai: Fine. If you really wanna know that bad...it's taylor swift.
Yosano: Who? Gotta speak up.
Dazai: Taylor Swift.
Ranpo: HAH, I KNEW IT! YOU ALL OWE ME FIVE BUCKS.
Dazai, yelling: KUNIKIDA HAVE YOU SEEN MY TOP?!
Kunikida: Chuuya's in the office.
Dazai: Ok thanks :).
Chuuya, from the office: THE FUCK?!
Okay. Okay.
So the idea that abilities in bsd are trauma based is basically canon yeah? Maybe just high stress or something like that... but it seem pretty damn canon.
Like-
We have Kyouka who just flat out inherited her mother's ability.
We have Chuuya who (this is near speculation) at the age of 7 had an ability and a calamity god after being basically tortured.
We have Atsushi who's ability manifested while being tortured.
We see Yosano developing her ability through her trauma.
Akutagawa was a orphan who needed to protect himself and his sister and he got a guard dog of an ability. His ability continues the development, adapting to abuse.
Even Steinbeck went hungry with such a large but poor farming family, and he got an ability that grows plants, crops and the such.
Some may seem redundant, like Kunikida. But someone with high anxiety (which he definitely has) could feel large amounts of stress (especially when young) if they don't have the things they need...
And then just for myself. We know little about where Dazai came from. But let's think. His ability turns off other abilities. Maybe he suffered great harm at the hands of an ability user through their ability...