you are a girl in the 21st century but time traveled to the imperial era. You suddenly woke up and found yourself lying in an unfamiliar and extremely spacious bed. Your father came into your room and said that you had to marry a prince in another country

After a few hours you met Manjiro your future husband, but you both didn't like each other, kept saying bad things to each other, no one is willing to give in to the other, both of them have quite childish personalities