The DEMO version only includes 4 pages:
http://futabakai.net
http://futabakai.net/about/about_futaba.html
http://futabakai.net/buyo/about_buyo.html
http://futabakai.net/school/school.html

It is possible to download these free files and install them on your server, so you can test how the site works.
Visit https://www.waybackmachinedownloader.com/en/buy-wayback-machine-downloader-recover/ to buy a fully functioning site.
Go back to the index page