Some things I found....
From The Lost Media Wiki
https://twitter.com/video_vhs/status/1550432647263899653 https://ameblo.jp/sgi-t/entry-12805172191.html https://ameblo.jp/sgi-t/entry-12808747744.html https://ameblo.jp/sgi-t/entry-12812333919.html https://ameblo.jp/sgi-t/entry-12817076618.html https://ameblo.jp/sgi-t/entry-12820768926.html https://ameblo.jp/sgi-t/entry-12827260938.html
I found some cartoon footage that wasn't there before. I also found articles, cartoon developments and magazines.