There is a lot of different opinions about this release and I understand it but the main goal was to bring her on the news. Is it the right way to do so? Idk but the result is here.
During one week she was on the news and a complete ~all singles~ is again on the top of the Recochoku charts... lol
And btw, even "Mentalist Daigo" (famous psychologist/scientist reading and analyzing people's mind etc...) made a video about it:
Let me summarize what he's saying.
" - Many people may think "why now?" yet I think that this may have been the right moment for her to do that because she felt that her 20th anniversary was a turning point and because Matsuura is her producer again.
For a lot of people, the only way to get rid of their feelings is to create something and/or to put those into words. It's even more effective when you put those into a narration because you can control the flow of it.
Moreover she had to speak a lot about herself to the writer, alone and with Matsuura. That is something that may be compared to a therapy.
Psychologically speaking, I thing that she may have still had some feelings for him until finishing this book. I am sure that now she feel better and more relieved than before. "
He speaks also about how and why people that become famous/wealthy fail to be happy, etc...
By the way, a lot users here and the Japanese public is wondering what songs are about and/or at some point related Matsuura and if every single songs she wrote is about him yet there is an official compilation of those songs released on AWA:
- aeternal
- Immigrant Song (Led Zeppelin)
- A song for xx
- poker face
- YOU
- Trust
- For My Dear...
- Depend on you
- WHATEVER
- TO BE
- Boys & Girls
- appears
- Vogue
- Far away
- SEASONS
- M
Do not ask me why there is a Led Zepplin song in this list. You may found some hints in the lyrics

I am a bit surprised about A song for xx though... lol