Pawn's Game: My Boyfriend Is Her Nemesis

Quick answer: 3 episodes, English original audio, and episodes 1–3 play right here tonight.

Lilian was the lost daughter of the Ellison family, found and then hidden again—this time as Jefferson DuPont’s secret mistress. She believed they were fighting generations of family rivalry together. She even got pregnant. Then she discovered the truth: Jefferson had married her twin sister, the one who once rejected him. Lilian was nothing but a substitute, a tool for revenge. Every moment of tenderness had been filmed, stored as leverage against the Ellison family. Falling from the clouds, Lilian didn't break. She planned.

She returned to DuPont Tower as a secretary. Behind her obedient mask, she stole intelligence, sabotaged DuPont’s attacks on her family’s company, and turned the game around. Jefferson felt the ground shifting beneath him. He saw something in her cold eyes that terrified him—someone he couldn’t control. When fake sisters and past wounds surfaced, Jefferson tried everything to win her back. But Lilian had already learned the hardest lesson: a substitute doesn't wait to be chosen. She chooses herself. In the end, she left for overseas, leaving only a cold promise: “See you in five years.”