Board Thread:Speculation House/@comment-26900424-20150924223054/@comment-4010415-20150924231157

Also, for an example of a male and female character being referred to in-show as King and Queen without even being in a romantic relationship, refer to Full Metal Alchemist: Brotherhood (or refer to the FMA manga itself). Roy Mustang views what's going on as a chess game, with him as the King. When the antagonists split up his group to the far corners of the country, he refers to his lieutenant, Riza Hawkeye, as his Queen. Even in the end of the manga, he and Hawkeye don't end up confirmed in some sort of romantic relationship. They're still just colonel and lieutenant.