The editor of the the Moodle Association of Japan Conference Proceedings, Machiko Yagi, has announced a call for papers: https://moodlejapan.org/mod/forum/discuss.php?d=1899
Although it is a blind vetted, peer-reviewed publication for presenters at MoodleMoot Japan, each year international presenters also submit their work. It is not impossible to accept an article that follows the guidelines, including bilingual abstract (DeepL translation recommended).
Those interested in past Moodle Association Japan research issues may wish to browse seven years of articles here: https://moodlejapan.org/course/view.php?id=62