Just because I'm the princess of a small country doesn't mean you should underestimate me

This is the story of a 13-year-old girl who inherited the throne in place of her father who suddenly disappeared. Accompanied by the guards sent by her maternal grandfather, she fights day and night against assassins hired by those who are trying to usurp her throne, and grows as a person. At the urging of her guard, Genbu, she takes the plunge and plans to visit Japan. Seeing this as an opportunity, the other royals try to eliminate her in a Japan that is drowning in peace, but instead she encounters an organization that is secretly protecting Japan, and runs away with her tail between her legs. This is the story of the girl whose fate is candidly depicted as a result of this incident awakening a different ability in her.