Buddhism.
buddhism
The Roman Catholic Diocese of Quilon or Kollam were the first ones who tried to spread the religion to India, Japan and Southeast Asia.
it spread the religion of budhism to china which was spread to Korea and then japan
Through truth.
The place of origin for Shinto vis Japan. It is Japan's national religion.
Hinduism is a religion that originated in and spread through out India but spread to only a limited portion of the rest of Asia.
It started of in Japan but spread quickly through the rest of the world, Jashinism is a veary unknown and misunderstood religion with a lot of people thinking its from an anime known as Naruto. Currently there is over a million people in the religion
The only real religion that was founded in Japan is Shinto however Buddhism and Christianity have rapidly spread to become the more popular religions in Japan
Francisco Pizarro
Christianity
Korea played a significant role in the spread of Buddhism to Japan during the 6th century. Korean missionaries and monks, particularly from the kingdom of Baekje, introduced Buddhist teachings, texts, and artifacts to Japan, which greatly influenced Japanese culture, art, and society. This cultural exchange laid the foundation for the establishment of Buddhism as a major religion in Japan.