The event organiser, Yugen Studio International & SNPG Inc, has the legal responsibility to tell ticket buyers and event attendees how their personal information will be collected and used. You can find their Privacy Policy below or contact them to request it.
For events organized by Kiri Nawa Kai: https://www.iubenda.com/privacy-policy/33308408/cookie-policy
For events Organized by SNPG Inc: contact info@sugiuranorio.jp