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