Through the collective efforts of Masako and a few political puppets, laws governing the shōgun's court in the early 13th century allowed women equal rights of inheritance with fraternal kin.
A través dos esforzos colectivos de Masako e uns poucos monicreques políticos, as leis de goberno da corte do shōgun de comezos do século XIII, permitiron que as mulleres tivesen os mesmos dereitos de herdanza que os seus parentes fraternos.