Regardless how success the vampire empire in the war for decades. We as the members of the imperial family never forget the traditions that have been done over the years, in honor to great our ancestors.
When the members of the imperial family has reached the right age to get married. We will hold a massive party, as well as the engagement ceremony for the members of the imperial who do not yet have any of partner.
And I was the one of them. The person who still don't have a partner. As a result my grandfather has planned an arranged marriage with the most powerful man in the east country.n
A crown prince, the heir to the throne of the empire of the beast, and the deputy commander of the elite forces, which is Izana.
Incidentally their crown prince doesn't have a candidate for the crown princess and they chose me because I was the only princess of the empire.