Dazai loved Oda deeply—but it was platonic. Fyodor got into Chuuya’s head early on, though, and had him questioning everything—including whether or not Dazai genuinely loved HIM or if it was all just biological influence from them being mates.

Chuuya looked at Oda and saw what most people would consider the “better option” for a mate. Stable, not feral, not murderous, a family man who happily raised children and who cared deeply for Dazai. Meanwhile, in that timeframe Chuuya saw himself and Dazai as actively making each other worse.

So it was a complicated relationship all around, and I think Chuuya’s jealousy and envy was in some ways as much of Oda as it was of Dazai’s relationship with him. He never reacted that way about Akutagawa who’s fairly obsessed with his mate, or anyone else Dazai got close to.

Dazai and Oda’s relationship, while platonic, was uncomplicated and healthier, and relationships have been built on far less—especially in an A/B/O world.

I hope that all made sense! I’m glad you enjoyed the story, and Chuuya’s inner conflicts!