I think Deli brings up good points about the ghost writing. LIMIT doesn't really fit in with any other lyrics she's written and while you can say she changed a lot in the years 1995-1998 I don't think it will really change that much. Her style from 1998-2009 hasn't been that drastic, plus, I didn't think it was all that common for debut acts to be given that much creative control over their first release - I figured that most times the first album songs are mostly ghostwritten and depending on sales they get more control....but that might just be the AU music industry
And I don' think that JAJ's question was answered yet - before joining Avex, Ayu performed as an Idol - she basically sang covers of songs and did bikini shoots/videos (clips she sang on tv shows back then are available in the fan-made album MOON which is available here on AHS).
As for the term "Idol past" (sounds shady, huh?) - there's a video of her riding a bike in her Idol days (that I haven't seen yet) but in a later TV appearance she didn't know how to ride. She might have forgotten or have become afraid of bike riding or something but there's a chance she was acting
