I think I finally discovered the mystery behind Rurutia (the jpop singer). I know I have the truth.
Back in 2001, when Rurutia started her career, Toshiba-EMI was running out of artists/money. They needed some income desperately, but they weren't going to let a simple lack of artists stop them.
Rurutia is extremely secretive when it comes to her name,age,personality. I believe this is because Toshiba-EMI ARTIFICIALLY CREATED Rurutia with the help of the japanese cybernetic cloning industries.
Why else would she be hiding her info? There is no other reason - she is a cyborg clone. This theory would explain why she whispers everything in her lyrics: her voice is actually just a crappy Sony speaker.
It's a secret version of VOCALOID!
They actually had some virtual idol in the 90s, that was done in CGI. Forgot their name though. Wonder if anyone wanked over her.