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Izumi Tanaka has become a princess who wears trousers instead of pastel dresses, meets her former bodyguard and has a dog Tamagotchi with an unknown pedigree. The princess's father, the crown prince, also boldly rejects imperial rules and traditions, as he has rekindled his relationship with Izumi's mother. Ms Tanaka may cause a crisis in the succession to the throne, and she is also a feminist with radical views on environmental preservation. And while the imperial court dreams of ending this relationship, the crown prince announces that he intends to marry his American lover. The imperial court council predictably votes against it. Izumi knows what it's like to not be good enough for the imperial family, so she decides to seek the blessing of the marriage. But is she up to the task? And will the freedom-loving princess have to give up her dreams and plans for the sake of her parents' happiness?