I've just finished and uploaded the translation of the interview article. Though it was done about two years ago, I think it's the most important article to understand her. Especially as for her past, as far as I know, it was only twice she talked about it openly and closely, in this interview and in the radio program, "All Night Nippon." In other words, reading the two articles, foreign fans will get almost the same amount of informations about her past as Japanese fans. And I hope so. If you find any unnatural parts, please inform me.
LINK