It's pointless to stress over the tour dates. She will release more details sooner or later. It's normal that things will be a little different for 2017/2018 because of the anniversary plans. She must be planning something special and so we have to just sit tight and wait. Things will be out of the ordinary this year. It looks like Ayu might be feeling more ambitious than any of her previous anniversaries.
Still alone is one of my all time loved songs, but I don't know how that song would sound vocally. I don't know if Ayu could sing it now. But I guess if she can still do kanariya she can sing any song.
