YOU SAID:

Oh, if the sky comes falling down, for you there's nothing in this world I wouldn't do

INTO JAPANESE

ああ、もし空が落ちるなら、あなたのために私はこの世界に何もない

BACK INTO ENGLISH

Oh, if the sky falls, for you I have nothing in this world

INTO JAPANESE

ああ、空が落ちれば、あなたのために私はこの世界に何もない

BACK INTO ENGLISH

Oh, if the sky falls, for you I have nothing in this world