YOU SAID:
You would not believe your eyes, if ten million fireflies, lit up the world as I fell asleep
INTO JAPANESE
1000 万のホタル ライトアップ世界として眠りに落ちた場合は、あなたの目を信じない
BACK INTO ENGLISH
Don't believe your eyes if you fell asleep as the Firefly light up world of 10 million
INTO JAPANESE
信じていないあなたの目あなたはホタルとして眠りに落ちた場合 1000 万の世界のライトアップ
BACK INTO ENGLISH
Don't believe your eyes if you fell asleep as the fireflies light up the world of 10 million
That didn't even make that much sense in English.