The videos that cannot be shown publicly are available as a membership. We plan to update about 15 videos per year.
*If you are using an iPhone, the membership registration screen may not be displayed from the app. You can register as a member by opening it from a browser (safari), so please do so from there.
https://www.youtube.com/channel/UCOmHnFAu9eozuVfgpB9ZUwg/join