As Fujufuse school was banned under the Edo bakufu (Japanese feudal government headed by a shogun), the believers of this school belonged to the Nichiren sect Ju school or other sect's temples for the public (Naishin or Naishinja (inwardly-having faith)), Nissho tried to unify the school and successfully gained an official approval of the fujufuse school with an official notice of Kyobusho (the Ministry of Religion) in 1878.
江戸幕府のもとで禁制となっており表向きには日蓮宗受派または他宗の寺院に属していた不受不施派の信者（内信・内信者）の統一化を図り、1878年〈明治9年）教部省の達（たっし）により不受不施派の公認を得ることに成功した。