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