Produced as one of the big projects of "Kamen Rider's 50th Anniversary", it was distributed exclusively worldwide on Prime Video from October 2022 and received a great response.
Half a century has passed since the country declared the coexistence of humans and monsters, an era of chaos. Izumi Aoi (Hirasawa Kokoro), a young human rights activist who calls for the abolition of discrimination, meets a man. Kotaro Minami (Hidetoshi Nishijima) ── He was a candidate for the next Genesis King, the existence called "Black Sun". The truth about the Genesis King and the Monster hidden in 50 years of history. And another confined candidate for the Genesis King-Shadow Moon - Nobuhiko Akizuki (Tomoya Nakamura).
Their encounters and reunions eventually become a big swell and swallow people.