Becoming a Japanese citizen (Naturalization process )

For anyone who has naturalized into a citizen of Japanese nationality can you please help understand the process?

I have been here in Japan with well over 5 years and my assets/tax/employment situation is all good. The only concern I have is regarding the Japanese ability. I don’t have any formal Japanese certification but can communicate well in informal settings. Reading kanjis can be a challenge depending on the difficulty.

Given this I’m wondering if I can clear the assessment particularly the Japanese language requirement. Also I don’t have PR yet(should get next year)

Thanks for your support.