From Chubby to Untouchable: My Billionaire Upgrade

Beryl, a lowly, long-suffering wife of a wealthy family, endures a car accident and miscarriage, having her face destroyed by acid splashed on her by villains, and being ruthlessly abandoned by her husband in a fire — after which she severs all feeling and forsakes love entirely. She cleverly uses a fake divorce and fakes her death to flee to Britain, where she not only reaches academic heights at Cambridge and regains her stunning looks, but also meets Ronan, the multinational chaebol heir who gives her absolute respect. Learning the truth, her scumbag ex-husband plunges into extreme regret and self-torment. In the end, Beryl returns in glory, using multinational capital to crush her ex-husband's family dimensionally, legally reclaiming the only stepdaughter who ever cared for her, and leaving her ex-husband to live out his miserable remaining years in endless regret and utter destitution.