The article analyzes the specifics of Japanese religious syncretism, which managed to adapt with great efficiency the norms of the Buddhist-Confucian complex and the autochthonous religion of Shinto. Japan is a vivid example of the harmonization of national identity, based not only on the high level of homogeneity of society, but also on the high degree of tolerance and ability to adapt and to adopt. In the political sphere, the Japanese post-secular system demonstrates the capacities of the Komeito party (Party of Pure Politics), which was created on the basis of Soka Gakkai Buddhist organization, which professes the humanistic ideas of Nichiren (1222–1282), set forth in the Lotus Sutra. Now the Komeito party plays an important role in shaping Japanese politics, coalescing with the dominant Liberal Democratic Party. The Komeito party, in particular, is effectively advocating the preservation of the 9th ‘pacific’ article of the constitution. The movement of laic Buddhists Soka Gakkai International (SGI), operating in 93 countries around the world, is widely known for cultural and educational activities and its struggle to ban nuclear weapons. Thus, Japan provides a pointed example of the combination of humanistic philosophy of human dignity and empowerment with political activity, which determines the nature of Japanese post-secular society.