Thats very simply. Sakura saws in the dream, that Fye kills Kurogane and Syaoran, so she must sacrifice herself. I dont like Sakura, so Im happy. Nothing personal, guys.

Oooooooooooooooooooooooooooooooooooooooooooooooooooomgosh someone please explain! I don't care if you ruin it just try to tell me as little as possible but just enough to make sense! *tears hair out* HE KILLED HER? AAAAAAAAAAAAAAAAAAAAAH! *rants*

OMFG I HATE BOOK 18 OF TSUBASA THAT SUCKED!!! FEI-WONG REED MADE FAI DO THAT!!!!!!!!!! Fei-wong reed: You...will...KILL THAT PERSON