I've really been into it for about 5 years now and not many people are familiar with the Japanese Indie scene as it is often over shadowed by Anime-featured mainstream artists...not saying that these artists aren't the best, but I think it's best to expand your range of interests in terms of Japanese music...so...shall I introduce?
here's downy...not to be confused with the fabric softener, they recently broke up, but their music continues to rock the Indie Underground scene in mostly Shibuya, Kyoto and Osaka...sooo here's downy....NEVER spell it with a capitol D lol.
downy myspace page
and then there's Zazen Boys, previosly known as Number Girl but they broke up into their own solo projects, and u can hear Mukai Shutoku the lead singer in both bands..as most Japanese artists do. they recently had a show in Baltimore that I missed
Zazen Boys
these are all I can think of at the moment..so yea..if anyone's interested in hearing more bands..lemme know!!