On some random 5 A.M. Internet rambling I ran into some stuff about Hyacca (百蚊) on ZB's A-Z of J-Music, which compares them to Midori (ミドリ)and Toddle, neither of which are bands I'm sure I deem worthy to shine Hyacca's boots, but it would be churlish to suggest that there are absolutely no similarities.
Roam in Octave gushes about Hyacca as well, and also takes in Mir in an earlier post. To top things off, they describe C.A.R. as "a totally awesome record label that you should all support monetarily" (bold text mine), which just makes it all the more tragic that the site seems to have drifted into oblivion since January. Come back!