J-Pop artists you used to love but now lost interest in

[Aga-chan]

J-Rock - I lost interest in most J-Rock stuff. Still kinda like a few songs and VERY FEW artists, but I've completely overcome the time when I was hyper over J-Rock. To an extent when I sort of don't like it.
(The question was about J-Pop, so I hope this is OK.)

Shiina Ringo - I haven't listened to the Tokyo Jihen albums and her new solo one, but from what I've heard they don't seem too interesting. And I strangely don't even feel much like listening to the old songs I like...