Just for the record: Yes, it is your English. I'm not stupid, you just need to learn this language better before you go arguing and insulting, dear.
Also, many of those genres you listed have their origins not in the US, either. Go read up your music history before trying to use it to make a point.
I agree that a lot of First Love was very Western sounding. But guess what, the most popular tracks (Automatic, Amai WANA and First Love) were much more Japanese R&B than Western. I think Distance was more Western sounding, but again, the popular tracks were very Japanese (Can You Keep A Secret?, Distance and Wait & See, specifically, but also Kettobase! [very un-Western] and Parody).
But this is all pretty much opinion, at its core. So let's forget all that.
And finally, no, that's not what being "ahead of the times" means, actually, if I understood that first part right. (It sounds like you know, yet at the same time you have no clue--how does that work??) It doesn't mean coming out with something that is/was recently mainstream and will still be big years down the line. That's ridiculous to think. Being ahead of your time means coming out with something that isn't very well known now (and either hasn't been popular for a long while, or has never been very popular), yet in a few years it's seen as something great or classic, or maybe even timeless. The point is, it's trying something different that will soon be popular.
So you got it almost perfect in that last part--don't know what the **** you were trying to say before that. I guess the language thing again? Ugh.
I'm done discussing this. It's getting us nowhere.