Tsuyoshi's RAIN single can be downloaded via
http://www.ahsforum.com/forum/showthread.php?t=94262
I actually like it from what I'm hearing despite the 12 & 13 mins time duration of the 2 B-sides @_@
I might get the single in due time since HMV has a lot of stock for the regular edition
I can't be bothered with the limited edition since the RAIN instrumental's there & I have no use for it haha