"WHY DO you look shocked, Mother?"
Zoe gulped hard before she answered Princess Runa's question. "I didn't know that I adopted Your Royal Highness in the future," she said nervously. "I actually just found out that the future me is married to married to His Majesty."
Princess Runa looked surprised. "Oh, I see. My mother didn't tell her younger self everything."
"You know that your mother can be clumsy sometimes," Emperor Isaak said. "So, let's not shock the child in your mother's body."
"Y-Your Majesty and Your Royal Highness can just call me 'Zoe,'" she said. It sounded awkward when Princess Runa called her 'Mother' since the Crown Princess was older than her physically at the moment. Moreover, she'd die of embarrassment if Emperor Isaak spoke formally to her (like calling her 'Your Majesty). "Please, just drop the honorifics. I'm totally fine with it."
"Alright," the temporary emperor said. "I'll call you 'Zoe,' then."