Originally the Sect officially insisted as the policy that, 'in Hoke-kyo it is said a woman cannot become a Buddha due to five obstacles,' but they changed their policy completely that 'it is only Hoke-kyo which taught that women can become a Buddha' after the defeat in 1945, when there was a movement at General Headquarters (GHQ) to eliminate the feudalistic atmosphere (Note that there is Shoman-kyo (Shri-mala Sutra) which taught the theory that women become a Buddha).
従来「法華経では、女人は成仏できない五障の身である」と宗派として公式に主張していたが、昭和20年の敗戦後連合国軍最高司令官総司令部による封建的風潮除去の動きに従い、「女人成仏を説いたのは法華経のみ」と解釈を180度転換した（他に女人成仏を説いたものとして勝鬘経がある）。