re: Asagiri saying a lot of people working on bsd have asked him to write about Chuuya from Dazai's point of view yet Asagiri refuses because for all his intent and purposes the answer is "Dazai just doesn't like Chuuya"
Asagiri. Asagiri come sit with me. Asagiri do you realize how much this statement makes Dazai's internal monologue about Chuuya much more intriguing? He doesn't like Chuuya.
In Fifteen, his irritation comes from his perception of Chuuya as a shallow violent guy who's just looking for the biggest enemy (Arahabaki) to beat up. He doesn't like him. Turns out this perception was wrong. He still doesn't like him. Chuuya turns out to be someone who struggles with his humanity in perhaps a more relatable way than Dazai ever expected. And he doesn't like him. Seeing Chuuya and Rimbaud fight inspires Dazai to give a new go at life, and he conspires with everything he has to make Chuuya join the Port Mafia to be his underling. But he doesn't like him.
Then comes Storm Bringer, during which a guy comes along and wants to kill Dazai and take Chuuya away, and Dazai fights tooth and nail to prevent both from happening. He doesn't like him. Dazai vehemently denies the possibility of Chuuya being an artificial human. He doesn't like him. Dazai is uncomfortable for having to tell Chuuya their best course of action would get rid of the last remaining lead they have over his origins, to the point he starts planning for not doing it. And he doesn't like him.
Dazai has contributed to building up years of mutual trust between him and Chuuya. He doesn't like him. Chuuya is always executing Dazai's plans nearly perfectly. He doesn't like him. For a few minutes Dazai considered the possibility he would be drowning Chuuya for real and took the time to reminisce about their good times together. He doesn't like him. He was partnered with Chuuya for a maximum of 3 years, statistically probably a lot less, yet he insists on saying they've known each other for 7 years and still calls Chuuya partner once in a while. But he doesn't like him.
What could possibly be going on inside his head for all of the above to be true at the same time? He's admitted more than once to thinking about Chuuya night and day... but it was of ways to kill Chuuya, so it's fine, obviously, because it means he doesn't like him!!!
Asagiri. I understand your simple words of dismissal as a way to warn your readers you have no intention of pushing that particular thread further in your writing. But Asagiri. Do you not see the monster, this walking mass of contradictions, that you've created? What do you mean he "just doesn't like Chuuya"? Not Chuuya angst this ain't about him I'm holding Dazai up by the scruff and waving him around like a prop. What were his motivations then? Why does he do any of this? What unknown depth of character hides in those cracks, Asagiri?