日本では何故仏教と神道が共存できた
In the Japanese religion of Shinto, the long coexistence of Buddhism and Shintoism resulted in the merging of Shintoism and Buddhism. Gods in Shintoism were given a position similar to that of Hindu gods in Buddhism. Moreover, because the Buddha Vairochana's symbol was the sun, many equated Amaterasu, the sun goddess, as his previous bodhisattva reincarnation. The later Tokugawa Shogunate era saw a revival of Shinto, and some Shinto scholars began to argue that Buddhas were previous incarnations of Shinto gods, reversing the traditional positions of the two religions. Shinto and Buddhism were officially separated during the Meiji Restoration and the brief, but socially transformative rise of State Shinto followed. In post-war modern Japan, most families count themselves as being of both religions, despite the idea of "official separation".

reincarnation