I've never lost full interest but sometimes I can feel my interest wavering time to time when it comes to J-pop. I suppose the only artists that keep me interested are artists like Shoko Nakagawa, Ayu and BoA, but I'm always checking out new artists and new releases that come out to see if my interest gets restored or boosted. I'm very similar to you asongforXX, my Korean discography is starting to surpass my Japanese quite a bit. I'm way more into Korean music right now (especially Big Bang, Lee Hyori and Son Dam Bi
), I love the diversity I can find in the Korean music scene.