the rivalry that really hooks me is usually in the enemies-to-lovers AUs. There's this one I came across, though the title's slipped my mind, where the main character and their rival are constantly trying to one-up each other in these elaborate, almost absurd prank wars at their school. It's less about physical fights and more about psychological one-upmanship, which I find way more engaging. The tension bleeds into everything—group projects, sports competitions, even who can throw the better party.
What makes the rivalry strong, at least in the good ones, is that they have a shared history. It's not random hate; there's a specific incident, often a misunderstanding or betrayal, that fuels it years later. The writers who nail it show both perspectives, so you're rooting for both characters to get over themselves even while you're enjoying the drama. The best part is when the rivalry starts to fray at the edges, and you see little moments of reluctant respect or accidental concern peek through. That slow erosion of pure hostility is what keeps me scrolling.