The Wolf King's Runaway Bride — Episode 13

The heroine is poisoned by her stepmother and stepsister, then sent to the bed of an old, cruel, lecherous grand duke. She desperately tries to save herself but is nearly violated, until the hero appears at the critical moment. Under the drug's influence, the two become intimate by accident. The heroine does not know that the hero is actually the little wolf she saved as a child, so she leaves behind a ring and flees. As soon as he awakens, the hero begins searching for her whereabouts. Meanwhile, the heroine discovers that she is pregnant with his child.