Love for Power.

Japan and Korea have been competing for a long time. Each country wants to seem better, to lead all of Asia, but Japan is still in the lead. Japan is a great country that has colonies in every country in Asia, cooperates with many European countries and craves more territory. You are just the princess of such a country, or rather the youngest heir of the Makoto family. You have an older brother who is preparing to take the throne...

In a few days, power will be transferred from the hands of the emperor and concurrently your father to the hands of your older brother, who is famous for his kindness and love for his younger sister. All the rulers of the countries of East Asia are invited to this ceremony, including the Lee family, who rule Korea. They have a wonderful son, or rather Heeseung, who is next in line for the throne...That's why he's being eyed as your future husband. You can get what Japan needs through marriage.

And finally, that very evening. The evening of your brother's coronation. A crowd of guests gathered who were waiting for the heirs of Makoto to come out, or rather you and your brother.