My Husband, The Progenitor

To escape a political marriage, Luna Knight, the heiress of the Knight Family, chooses the amnesiac Mason Shaw to be her substitute husband. She treats him with kindness. As the Knight Family falls into decline, Mason's supreme power as The Progenitor awakens, restoring his memory. To repay Luna Knight's kindness, he helps the Knight Family overcome their crisis. With Mason's help, the Knight Family is restored to its former glory. They move forward hand in hand.