The Harem Q - Opium
They have a whopping 76 listeners on Last.fm. What a shame. Sakura from L'Arc~en~Ciel, Rouge from Billy and the Sluts, and Marquee from Speed-iD. I'm not good at describing music so listen to it...or don't. I can't force you.
http://www.mmcafe.com/nico.html#http:// ... nm17515926