Guess the whole "respecting other cultures" thing goes out the window, even in the presence of the King in his own Kingdom, when it doesn't suit one's personal moral compass. Don't walk into his home and spit in his face, and by that same token, protect your sovereign territory from incursions by his people and culture. Diplomacy isn't that convenient, and Kuro did it the right way - through deception and blackmail. Positioning and leverage is the only true king, all you gotta do then is press the button.