Learning Japanese textbooks in braille

Um... actually I've read some threads asking about how can they get Japanese braille written books. However, I didn't find any that asks about learning Japanese textbooks written in braille so if anyone knows how can I get them online or even if they exist I appreciate your help.
If there were none, is it possible to request some in the Kinokuniya library (because we have it in my city but it is a bit so far therefore I can not ask them).
Thank you in advance...

So, you want to learn Japanese using a textbook written in Unified English Braille?

Have you tried this:
https://www.reddit.com/r/LearnJapanese/
or read this:
https://www.reddit.com/r/LearnJapanese/comments/4xme7f/how_to_learn_ja...

Here is a list of contact points of Kinokuniya stores.
https://www.kinokuniya.co.jp/contents/en/ostores.html

How about Amazon or others?

I don't quite understand your question, but maybe the Japan Braille Library can help you.
http://www.nittento.or.jp/en/index.html

In any case, you can have almost any educational book translated to Braille, and there are volunteers that can handle Braille of various languages. Perhaps there is a similar service available in the country you're living at.