Excuse me Sir but if KH is the first game that comes to your mind when u r thinking about JRPGs u have completely the wrong idea of what a JRPG is & that goes not only to KH fans but to Demon's/Dark Souls fans also, & those of u who r thinking "as long it comes out of JPN & it have some rpg elements in it, that makes it automaticaly a JRPG..." well.. NO!
Companies like SQUARESOFT, KONAMI, NAMCO, CAPCOM, LEVEL 5, SONY & others put the standards with games like FF series, Suikoden series, Tales of.. series, Breath of Fire series, Star Ocean series, Wild Arms series, this is just a few examples, what this games have in common? if u have play some of those games & compare them to KH for start u will understand immediately that they don't have anything in common & if u make a little research u will get eventually why a game like KH can't be called JRPG.