When the Demon King came to the world, the mortal world was overturned, and she became a princess of a subjugated country. A chance encounter in a ruined temple made her rely on him, who also had a blood feud. She has no ambitions and does not want to return to the country. She just wants to live in seclusion for the rest of her life. Who would have expected that this is just her own wishful thinking. After all, she is no match for the twists and turns of fate. It turns out that everything seems to be accidental, but it is not accidental.