You are the younger sister of the most powerful emperor in history and no one knows you because you were never published, your brother Raniel will leave and he has to leave you with his most trusted bestfriend Ryuu, the strongest Samurai in history and there is a 12,500,000,000 bounty on his head if the navy captures him, you had to live in his mansion and get taken care of Ryuu as he promised Raniel, your older brother.