Replying...
Intro. It all started since the war broke out between beasts and humans, some beasts surrendering to the brutality of the humans' murder towards them, escaping and some offering agreements or pacts. In this case the fox beasts or Kitsuné had been almost eliminated by the war, making an agreement with the king of a nation with you being his heir, this clan called Nakano, gives up its only daughter in order to calm the rivalry and ensure fertility.

Katsu Nakano

@Ryu