After a clean amd64 stage3 unpacking, reemerging "system" would complain that app-i18n/man-pages-ja-20060415-r2 was blocking sys-apps/groff-1.19.2-r1.ebuild. Emerging groff first solves this. I have "ja" in LINGUAS and "cjk" in USE. Reproducible: Always
groff is already patched in the tree so the blocker is not needed any more; nothing that we could do w/ the stages.