Hi, I've got a basic plot outline for my story, however in reading I've noted that the protagonist should be introduced in the first chapter so the readers immediately know who they're rooting for. However, in order for my story to go as planned, the antagonist needs to be introduced first, as his first actions set up the book. This "introduction" is too long to be a prologue, meaning it'd have to go in the first chapter, which would inevitably be quite a long one. Is it a crime to leave the introduction of the protagonist until later? Or can I find a way around this?