In "Forget That Night, Your Majesty," Lunia, the eldest daughter of Count Persephone, endures mistreatment and neglect from her family. When she receives a letter stating she has been chosen to marry Hades Khronoa, the Duke of the Khronoa family—known as the Lords of Death and protectors of the Empire—she is grateful for the chance to escape her father's household and agrees to the marriage.
After moving into her new home, however, Hades avoids any intimacy with her. Initially understanding, Lunia grows concerned about his health. The heads of the Khronoa family are cursed to either die or lose their sanity by age thirty unless they have a child with a bride chosen by God. Fearing the collapse of the nation if Hades dies, the empire's priests urge Lunia to drug him to conceive a child.
Years later, having fled the duke's mansion, Lunia secretly raises her twin sons, Uranus and Helios, in a neighboring country. On the night of their conception, she had a vision of them fighting under the Khronoa family crest, fearful that the curse would turn them against each other. Despite her precautions, Hades eventually locates Lunia and demands to know why she saved him and why she left.
