Yeah, I am disappointed (there could have been so many interesting stories told and so much nonsense mafia mythology made up! the stakes could have got much higher!) but also in a resigned way. It really does make sense with the Daily Life Arc start to the story, the emphasis on comradeship, and the way character arcs tended towards being circular. it's a endearing that it ended like this, in a way.

Hopefully it will be even more ridiculous! Amano's good at that. She's done (is doing?) character designs for an anime currently running, but I don't think she helped with the story. And now I can't remember the name of it anyway.