Synopsis
The battle between the 10 Kamen Riders scattered across Japan and Badan's invasion becomes even fiercer! However, let us take a moment to tell the story of "the orignator." Takeshi Hongou, the lone warrior battling the evil secret society Shocker, known as Kamen Rider. The man who approached him was Hayato Ichimonji, a cameraman tracking Shocker... How did these two men meet, and how did they become Kamen Rider?
(Source: Kodansha, translated)
