I was always taught in school that books must have protagonists and antagonists, and it occurs to me that this is a very hierarchical belief that just isn't true.
Like the Bunker series by Jordan Rivet for example, which involves plenty of conflict - but which frequently switches perspectives between the *parties* to that conflict. None of the parties is actually an antagonist!
@joepie91 It's a pretty colonialist belief in a way, like believing the hero's journey is the main story archetype. Story telling in non European contexts can be quite a lot different—and not apply this framework of story telling about singular individuals going on heroic journeys.