It is the eighth installment in the Kamen Rider series and a co-production between Mainichi Broadcasting System and Toei.

He soon finds out the horrific truth from his stepfather: Gorgom originally killed his true parents and, since both Kotaro and Nobuhiko were born on the day of a solar eclipse, are referred to as "Black Sun" and "Shadow Moon".

Kotaro, taking on the name of Kamen Rider Black, was determined to rescue his stepbrother from Gorgom while protecting Japan.

[3] The reboot was announced at a press conference on April 3, 2021, with Kazuya Shiraishi heading the project as director.

The show's staff was confirmed in October 2021, with Izumi Takahashi as a screenwriter, Shinji Higuchi as a concept designer, and Kiyotaka Taguchi as special effects director.