O.O i have no idea what manga/anime this is from... just know it's from CLAMP. the lyrics are from a song called "3 Libras" by A Perfect Circle. It's a AWESUM, AWESUM, AWESUM song. I like the vocals, almost like Tool's vocalist (don't ask). Sounds painful, I think!
For my sempai, tsubasachro, who i found to beh srsly awesum, srsly.