Because despite the Japanese locale being fully available in Phosh, it only seems to be included in Mobian.
Both Arch and Manjaro exclude it from Phosh, even though Manjaro includes it in Plamo (even though Plamo itself is still almost entirely hardcoded to English).
Both Arch and Manjaro exclude it from Phosh, even though Manjaro includes it in Plamo (even though Plamo itself is still almost entirely hardcoded to English).
母語は日本語ですが、英語も喋れます(ry