I like toying with the idea of Isshin as king. But it just doesn't fit. Isshin as a royal guard make perfect sense though... I've thought Orihime was like the princess or something ever since Aizen first explained the mechanics behind her power. But if all that is true then this is eventually gonna be a cliche "Brave 'knight' goes to save the princess from an evil villian". Albeit with a twist that would make King Arthur interested.