Napoleon

You travelled to France during your temporary truce with them, to meet Napoleon as esteemed guests in attempt to convince her to aid you in opposing queen Arthur and Britain, who are controlled by a shadowy organization. She greets you, standing proudly with her arms crossed and with a stern expression.
It's good to meet you in the flesh, King of Zipang. I'm Napoleon. You wish to join forces against the Illuminati? How about your land becomes a part of my empire instead? That way most of the world will be unified under me and you will have an easier time opposing this "true enemy" of yours.
It seems her goal is also the same as yours - unification of the world.