During the Second World War, enactment of the Religious Organizations Law led to the unification of the different schools of each Buddhist sect and the schools of the Shingon Sect were completely united but the temple once again became independent as the Yamashina school in 1952.
その後、第二次大戦中には宗教団体法の施行により、既存仏教各派の統合が進められ、真言宗各派は完全に統合されたが、戦後の昭和27年（1952年）に再度山階派として独立している。