I Became the Heiress's PlaythingEpisode 4

Burdened by her father’s gambling debts and her mother’s mysterious past, Lina is trapped in the orbit of Evelyn, a powerful heiress who refuses to let her go. By day, Lina fights for her future as a promising researcher. By night, she becomes Evelyn’s secret obsession. Lina once believed that paying off the debt would finally buy her freedom. But the one thing she can’t escape is her own heart. When a powerful family engagement draws near and the truth about her mother’s case finally surfaces, Evelyn—who once held Lina captive in the name of hatred—finally breaks down and begs her to stay. But Lina doesn’t want an apology. She wants freedom. Now, with everything Evelyn has to lose, can her late regret earn her one last chance to knock on Lina’s door?