AA literature is available from the AA Japan General Services Office. Intergroup and English-speaking AA are not directly affiliated with the JSO, so please contact them directly with any literature requests. While there may be English-speaking resources available to help with requests, it is preferable to have a Japanese friend contact them on your behalf.
Grapevine, the “meeting in print,” is available on both paper and in digital form. If attending regular meetings is difficult because of distance or other factors, this may help to keep you connected with the fellowship and the message.