An unofficial doujinshi spin-off manga of the Showa Era Kamen Rider Series by Eiichi Shimizu and Tomohiro Shimoguchi (now famous for [Linebarrels of Iron](https://mangadex.org/title/1555) and [ULTRAMAN 2011 Manga](https://mangadex.org/title/7042)). **Notes:** - The doujin's original serialization ran for only nine chapters until Toei ordered a cease-and-desist for copyright violations, nevertheless Shimizu &…