I was a kid back then, I love watching Rurouni Kenshin, and my first J-rock music was 1/3 Junjou na Kanjou by Siam Shade, then I started searching for more like Fourth Avenue Cafe and that's how I discovered L'Arc~en~Ciel. The rest was history.
EDIT:
Not to forget the Voltes V theme song.... ahhhh, pure nostalgia.