Okay, so 'From Heartbreak to Power: Her Comeback, Their Downfall'—that title basically writes the ending, right? The protagonist, after being utterly betrayed by people she trusted (usually an ex and his new partner or her former friends), claws her way back from rock bottom. She gets successful on her own terms, often in business or the arts. The final act is usually a public confrontation where her tormentors are exposed and humiliated, their lives crumbling while she watches, finally free. They often beg for forgiveness or help, and she walks away, offering nothing. It’s a pure wish-fulfillment catharsis. I’ve seen a few webnovels with this exact plot, and the endings rarely deviate because that’ said. You don’t read this for subtlety, you read it for that moment the tables finally turn.
One thing I’ve noticed is the downfall is sometimes a bit rushed—like, the villain’s business collapses in a single chapter due to a leak she orchestrated. It’s not always realistic, but who cares? After hundreds of chapters of her suffering, you just want to see them get theirs. The very last scene is usually her with a new, better love interest or just happily alone, looking out at the city she now owns a piece of, with a quiet smile. It’s predictable, but satisfying in the way a cold drink on a hot day is.