I've seen this question pop up a lot in fan groups. 'Wooing My Ex-Wife Again' with Anastasia as the lead is a pretty standard corporate-office-romance-with-a-twist setup, but it does have its moments. The main plot follows CEO Charles, who, five years after a divorce he deeply regrets, discovers his brilliant new subordinate, the one revolutionizing his company's projects, is actually his ex-wife Anastasia. He had no idea she was this capable; she was just the quiet wife he neglected. The plot is essentially his long, painful campaign to win her back while she's laser-focused on her career rebirth and has zero interest in rehashing old wounds.
The central tension isn't really 'will they get back together'—you know they will—but watching Anastasia's transformation from a subdued, heartbroken woman into this absolute powerhouse who makes Charles eat his words is deeply satisfying. It's less about grand gestures and more about him slowly, painfully realizing the scale of his mistake as he sees her brilliance firsthand. The novel spends a lot of time on the power imbalance in their new dynamic; he's technically the boss, but she holds all the emotional and professional cards. It's a revenge fantasy wrapped in a second-chance romance, and the corporate setting provides a good backdrop for their clashes.
The supporting cast, like Charles's overbearing mother who originally looked down on Anastasia, and Anastasia's new suitors from the business world, add pressure. Honestly, the middle sags a bit with repetitive boardroom drama and Charles being dense, but the payoff when Anastasia finally lays out all her past hurts is worth the slog. I kept reading just to see how far she'd climb before even considering him again.