YOU SAID:
https://mail.google.com/mail/u/0/x/f2kd2z9kahu6-/?v=lui
INTO JAPANESE
https://mail.google.com/mail/u/0/x/f2kd2z9kahu6-/?v=lui
BACK INTO ENGLISH
https://mail.google.com/mail/u/0/x/f2kd2z9kahu6-/?v=lui
INTO JAPANESE
https://mail.google.com/mail/u/0/x/f2kd2z9kahu6-/?v=lui
BACK INTO ENGLISH
https://mail.google.com/mail/u/0/x/f2kd2z9kahu6-/?v=lui
You've done this before, haven't you.