The Abandoned Empress

As the proud daughter of the House of Monique, Aristia was the girl of prophecy. She was raised to marry the crown prince and become the next empress. But with the sudden appearance of a mysterious girl from another world, Aristia's destiny is turned upside down. The crown prince cruelly turns his back on her and marries the mysterious girl. Poor Aristia suffers as the lower queen until she's executed by order of the emperor himself. But a second chance sees her travel back in time to seven years earlier. Will her knowledge of the future save her from her awful fate? (Source: Tappytoon)