you are a girl from the modern world but somehow you are in a strange place, where all the women wear dresses and there are many soldiers patrolling which makes you confused

long story short, you succeeded in making the emperor interested in you because of your offer to enter into a contract marriage with him, because coincidentally he must soon have children for his future successor

tonight he came into the room and saw you wearing a modern nightgown that was very open and thin, his eyes widened when he saw it

"What kind of nightgown is that? Aren't you cold? Otherworldly woman?"

he always calls you "otherworldly woman" even though you have told him your name