Forget That Night, Your Majesty

Lunia, the daughter of the Count of Persephone, was estranged from her family, particularly her half-brother, who treated her as a mere tool. She was then chosen to marry Hades, the head of the Duke of Khronoa family, who is feared as the "King of the Underworld" and cursed with a short lifespan if he doesn't wed a bride chosen by the emperor. Hades informed Lunia that he wouldn't be loving her, so she deceived him and spent the night with him before disappearing. This deception led to unforeseen consequences, including a pregnancy with Hades' child, which eventually came to light seven years later when he sought to reunite with Lunia and their child.