Re: "Persona Office." As someone said earlier, we saw hints of that in Persona 2: Eternal punishment, what with all the characters being professional adults, several of whom were dealing with identity crises. Not the least of which was
police office Katsuya Suou whose heart's desire was to be a pastry chef.
And there is that whole theme of your "self" outside of work, weekend warrior, that kind of thing. Like the teacher who races bicycles on the side, or the neurobiologist who draws comics on the side, etc. And adults have been in far more relationships than kids, and those change a person big time.