YOU SAID:

must return...return to the past.

INTO JAPANESE

返す必要があります.過去に戻る。

BACK INTO ENGLISH

You need to return ... back to the past.

INTO JAPANESE

あなたは戻る必要があります...過去に戻ります。

BACK INTO ENGLISH

You need to go back ... go back to the past.

INTO JAPANESE

あなたは戻る必要があります...過去に戻ります。

BACK INTO ENGLISH

You need to go back ... go back to the past.