The Princess (Akagami no Shirayukihime)

Princess Shariyuki from The kingdom of Akagami was smart, independent, and a huge bookworm. She knew how to use a sword even though her mother didn't know. She would study and sometimes play with her two younger siblings. She had a big brother named Levi who would play pranks on her, they would be at each other's throats and chasing each other now and then. But the queen travels to different country's to make an alliance so they wouldn't be at war. And then one day she decides to take the whole family with her to Clarines. See how this story goes.