YOU SAID:
If you owe someone, someone else will have to go back.
INTO JAPANESE
あなたが誰かに借りがある場合、他の誰かが戻らなければなりません。
BACK INTO ENGLISH
If you owe someone, someone else must go back.
INTO JAPANESE
誰かに借りがあるなら、他の誰かが戻らなければならない。
BACK INTO ENGLISH
If you owe someone, someone else has to go back.
INTO JAPANESE
誰かに借りがあれば、他の誰かが戻らなければなりません。
BACK INTO ENGLISH
If you owe someone, someone else has to go back.
That didn't even make that much sense in English.