Long ago Fanelia controlled the seal, and the key to it was concealed in this world. In Gaia, dragons live as well as people, and the reason is that there was excess power left over from the mighty god. They're looking for the key to the seal. I've agreed to protect the seal's key from the empire's hand. You have no right to be involved with Escaflowne.
Many people are already under the Empire's foot because of it.
It's still quite an uncertain state of affairs.