KinKi Kids is my favorite senpai group too.

...and TOKIO. LOL.
Kanashimi Blue was my first KinKi Kids song! i saw a video of them performing it at Music Station on YouTube. it said KAT-TUN in it, so i checked it out! but, apparently, KAT-TUN was backdancing for them (since i thought it was KAT-TUN performing and not KinKi)! ...and after i saw the performance i ordered the single, haha!
just cuz of a labeling error on a YouTube video, i got into KinKi Kids.
i would check out "Ai no Katamari" & "Garasu no Shounen" too! they are great songs!