YOU SAID:
I wonder what might happen if you were to disappear.
INTO JAPANESE
もしあなたが消えたらどうなるのだろうか。
BACK INTO ENGLISH
What if you disappear?
INTO JAPANESE
あなたが消えたらどうしますか?
BACK INTO ENGLISH
What would you do if you disappeared?
INTO JAPANESE
失踪したらどうしますか?
BACK INTO ENGLISH
What would you do if you disappeared?
That didn't even make that much sense in English.