(I changed category from tips & trick. Sorry if you see again.)
I found Japanese Character extension template for Prezi Next.
It is produced Japanese Prezi expert Mr. Yoshifuji.
The template is great and his effort is marverous.
However, to use this template, users needs to report personal information to him.
I believe this kind of template should be shared by Prezi.
Prezi’s one of their official account simply own the template and announce to users to share it, not hims.
Giving and receiving personal information should be least.
I hope Prezi.com do it straight away.