I Mistook the Hidden Identity of the Sub Male Lead

A spoiled heiress seeks redemption, but a chance encounter with a mysterious stranger leads her to be bound by a magical contract. Prince Grandiel, hiding behind a mask of deception, recruits her as his imperial spy. One rule: keep his secret, or her heart will literally explode. In a high-stakes game of deception and loyalty, will Mary survive the palace's deadly intrigues? Discover the truth in Chapter 1!