Okay, so a few years back, Koi Kaze was produced and released, and I managed to find a physical copy of the OST (thanks to cdjapan.co.jp. Problem was I became hooked on the vocals in the eponymous OP, sung by Ef...but, alas, I have never been able to find anything else by this artist (I haven't even been able to find a biography of Ef :( . So now I'm wondering..was Ef a one-shot effort by the seiyuu of Koi Kaze, and does anyone here recognize the group?