Runaway Wife, Relentless LordEpisode 54

Forced to become a mistress, Celine Shern flees to the Marquis's Residence, only to spend a night with Damian Shaw. She soon discovers she's pregnant—impossible, as Damian's chill poison has left him infertile. Betrayed by her family and targeted by Damian’s betrothed, Cathy Swift, Celine learns her blood marks her as Medicine King Valley's lost heiress and Cathy as the impostor. Celine reclaims her birthright, marries Damian, and gives birth to triplets, ending the Shaw family's curse.