I don't understand why y'all complain at Kuu and ayu performing classics on TV. It's not like who's casually watching it at home wants to keep up on her most recent tunes, and th rise of Ai no uta on digital charts show it was a nice move actually, I doubt EX TAPE would have charted if she had sung it lol At least when it comes to her concerts and festivals setlists there's more variety
She's past her popoularity peak and as long as she does not gets on top again this will be what TV viewers will expect, and since Kuu is totally audience-driven on her production this will be what she will follow.