Physical edition by Tesura Games is opened for preorder:
https://store.tesuragames.com/producto/fading-afternoon-uncensored-nsw/
It's the only full version on Switch (it matches the Steam version, digital Switch version has no gambling mini-games, additional waifu etc. because of age ratings in Japan).
I also wrote some introduction dialogue and Ueda M. illustrated it. So 24 pages "manual" is included.
Copies are limited so it's better to preorder while it's available.
Enjoy!