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