ooh.. I liked it *sniffles*. I'd try to switch to smart-like mode, but I'm close to fangirling this piece badly. But it's so pretty... *more sniffles*
Basically, I echo all dark_branwen/Ranno-sama's words.
And the fraternal relationship, the twice betrayal issue and Venus... so well-done. And it feels so right. Aaaand... I'm not fond of Sting, but Fields of Gold is a wonderful song. Good choice ;P