If you are talking simply of Shintoism, there have never been any holy writings.
Shintoism, the traditional religion of Japan, does not have a specific viewpoint on The Bible, as it is primarily concerned with kami (spirits) and the natural world. Shintoism is not a proselytizing faith and typically does not engage with texts from other religions, including Christianity. Followers may respect The Bible as a religious text but do not integrate its teachings into their practices or beliefs. Overall, Shintoism exists independently of the doctrines found in The Bible.
Shintoism is indigenous to Japan as a spiritual practice of their people. As such, they would not normally read the Judeo-Christian Bible. However, this does not mean someone who practices Shintoism could not or has not read the Bible.
There is no founder for Shintoism
There is know founder for shintoism.
Shintoism, Shinto
Shintoism is the major religion in Japan.
Shintoism does not have one main god. It has over 8 million different kamis (spiritual beings that exist in animals, plants, nature, etc). A large majority of Japanese people worship Amaterasu as the "main" kami of Shintoism. Amaterasu is the goddess of the sun.
There is no conflict any more than the Betty Crocker Cookbook is at odds with the the instruction manual for your DVD player.
Jomon
The Halawali is the key text of Shintoism.
Shintoism is a spiritual practice in Japan
Shintoism people worship at shrines I think