The Japanese Government was established, following the Meiji Restoration (1868), and tried to make Shitoism a state religion. The Government introduced the “Daikyō-in” seminary system to control religious organizations. Hence, Nissatsu Arai was designated as Archbishop of the Nichiren Sect and was entrusted to administer several sub-sects of Nichiren Buddhism.
Nissatsu successively published the writings of Nichiki, and clarified the importance of Nichiki’s “Kanjin Kyōgaku” doctrine, a doctrine of observing one’s mind by chanting Namu-myō-hō-renge-kyō.
At the same time, he rendered remarkable services to set the standard for the rituals the of Nichiren Sect.