Fellow researcher Jeff Morita was nice enough to write about his experience of trying to obtain copies of his grandparents' koseki from offices in Hiroshima-ken. Fellow researcher Gene Montgomery was nice enough to write about his experience of trying to obtain a birth certificate and koseki for his wife from offices in Okinawa-ken. Fellow researcher Ken Honda was nice enough to write about his experience of trying to obtain copies of his great-grandparents' koseki from offices in Fukuoka-ken. Kaimyou Some very rough information about posthumous names that may appear on temple records.
Information, tips, or experiences about obtaining a copy of a koseki from Japan are happily accepted here!