I hope you don't mind my interrupting this conversation, as I wanted to put my thoughts down about first J-Pop/Rock experiences...
Like many people, my first exposure was through anime. The first CDs I started picking up were soundtracks to my favorite shows, though I'll admit that before that I actually used to tape the songs off of my videos onto audio cassettes so I could listen to them while driving, etc.
This was back in 1994, mind you, so still pretty low-tech...
The first actual non-anime CD I picked up was L'arc~en~ciel's "True", which I did simply because I really liked "Blurry Eyes" from DNA^2... you might say, "Ummmm... 'Blurry Eyes' is on Tierra, you know..." Well, at the time, I didn't know... so I picked up a L'arc CD completely at random. The opening double shot of "Fare Well" and "Caress of Venus" completely hooked me, and I've been a big fan ever since.
Since then, I've been expanding my horizons and now own J-Pop/Rock music from about 1950 forward in just about every genre you can think of... but for me, L'arc started it all. And this is coming from a 30-something year old, so no accusations of fanboy/girlism here... just pure enjoyment of their musical sound. And the truly scary thing... now my dad really likes L'arc too!
How cool is that?
Nice to meet y'all, and thanks for indulging me...