It's a subgenre of speculative fiction, so it includes fantasy as well as science fiction, and it's a reaction to the dystopian views that grimdark novels have. Where grimdark is violent and amoral, hopepunk stories feature characters who fight for positive change, communal responses to challenges, and even radical kindness. It's an intentional ray of sunshine in what could be a bleak literary landscape. It's taking a stand because it's right, not because it's profitable. It's rebelling against an oppressive regime to improve everyone's lot, not just your own. It emphasizes cooperation over conflict while realizing that a Happily Ever After isn't guaranteed.

And it's everywhere.