User blog comment:Misstress of the heavenly yard/EC Kaimei VS Kaimiku/@comment-25565419-20140813230852

I think it really is KaiXWhoever. Considering how both of Gallerian's children are Elphe. My personal head canon is that his wife is Elphe (though probaly may or may not be Miku, unless the mother descended from a Miku charcther), seeing how  Elphegort is a state in the USE