I really don't know what you guys are smoking, because Ayu is EXTREMELY non-Western sounding. She is the epitome of J-Pop. You guys must think that anything without Chinese or Indian instruments is Western. But even the Middle-Eastern inspired INSPIRE is still almost nothing but J-Pop. And somebody said something about Real me...? You can't go any further than saying it has a slight Eurobeat touch to it.
Also, when most people say ''Western'', they do usually mean American. And in that case you're even further off. Because, yeah, a few of Ayu's earlier things had a slight European vibe (I'm mainly just talking about LOVEppears and a few other techno-ish songs), but she's never had anything that could be mainstream U.S. stuff.
And for those of you saying things like, 'oh well pop and R&B came from America so yea it's all Western,' you guys do realise that THOSE genres are made up of combinations of music types from, mostly, Africa...? So if you're going to try that, music is all technically African, lol.