tokyo japanese teenager sue government osaka say public high school repeatedly force dye naturally-brown hair black ban attend school local media report friday lawsuit file osaka district court 18-year-old girl say mother inform kaifukan school habikino city upon enrolment bear brownish hair school policy ban hair color media report educators however instruct color hair black tell repeatedly dye job insufficient force either dye hair black quit school kyodo news report cite lawsuit girl attend school since september 2016 suffer pain irritation hair dye seek damage 2.2 million yen 19,300 say media add osaka prefecture ask court reject claim masahiko takahashi head kaifukan school say could comment directly case note school policy prohibit students dye bleach hair decline say whether permissible dye brown hair black girl could reach comment japan conformity cultural norm many school strict rule hair color accessories make-up uniform include length skirt girls japanese girl say school force dye hair black sue government media