First I've heard of Koyasu: Gundam Wing, I think.
Favourite Koyasu role: Aya from Weiß Kreuz, and I also really liked his portrayal of Herve from Red Garden, even if couldn't stand the actual character. Ryo from Persona -trinity soul- is probably a close third.
Now, for the request. Does anyone have the song "DxD"? I found a video here (you need an account to view it), but there's some weird stuff at the beginning and a video isn't easily dragged from computer to computer. "DxD" was released as a single in 2001, and it came with another song called "Akuma ni Tamashii o Utta Shounen no Hanashi o Shiyou," but I've never heard it.
And just so this post isn't just me begging for a song, here are some songs I found off YouTube.
(The first half of this video is "God Hurts Those He Loves," as "Rapture" appears to be a remix version with different lyrics.)