The Lord's Secret Agent Wife

Top agent Hazel Chandler transmigrates to become the foolish wife of Lord Lior Sterling, married to him via an Illness-Warding Wedding Ritual. To protect herself, she hides her intelligence and combat skills, repeatedly resolving the difficulties and conspiracies set by Luttrell Manor and Prince Roderick. The two test each other and gradually develop feelings, working together to overthrow Prince Roderick's rebellion. Hazel reveals her true abilities, and the couple stays together.