Dependent" visa is granted for spouse and unmarried child supported by their family living in Japan with working visa or student visa.
It's often said there are difficulties especially for foreign students to invite their spouse to Japan,because of their unstable income situation.There may be chance ,however,to bring students' spouse to Japan,in case they can present enough evidences of assets abroad,including ones belonging to their parents,to fully support their married life in Japan. Please leave it to us even if the application done by yourself has been rejected.