YOU SAID:
jmjskvbqwertyuiufdxcvbnjuytwsxcvbnmtrsxnmvbnmkjhytrdcvbnjhytrdc
INTO JAPANESE
jmjskvbqwertyuiufdxcvbnjuytwsxcvbnmtrsxnmvbnmkjhytrdcvbnjhytrdc
BACK INTO ENGLISH
jmjskvbqwertyuiufdxcvbnjuytwsxcvbnmtrsxnmvbnmkjhytrdcvbnjhytrdc
INTO JAPANESE
jmjskvbqwertyuiufdxcvbnjuytwsxcvbnmtrsxnmvbnmkjhytrdcvbnjhytrdc
BACK INTO ENGLISH
jmjskvbqwertyuiufdxcvbnjuytwsxcvbnmtrsxnmvbnmkjhytrdcvbnjhytrdc
You've done this before, haven't you.