I may be missing a couple tags here, but he is a Polish Japanese-nationalist?

Bro, the Japanese nationalists hate foreigners. They drive around in trucks playing that shit on loudspeakers. They aren’t going to invite you to their club and don’t care you agree with them.

Also nobody really decribes their religion here as Shinto, except maybe shinto priests. It informs a lot culturally, but it would be really weird if you walked around describing yourself as a shinto practicioner.