The spin-off will focus on Geiz Myokoin/Kamen Rider Geiz (played by Gaku Oshida) in the world after the events of the series finale. Also part of the film's cast are: So Okuno as Sougo Tokiwa/Kamen Rider Zi-O, Shieri Ohata as Tsukuyomi/Kamen Rider Tsukuyomi, Keisuke Watanabe as Woz/Kamen Rider Woz, Rihito Itagaki as Heure, Ayaka Konno as Ora, and Kentarou Kanesaki as Swartz.
The spin-off also feature the use of the Geiz Majesty Ride Watch, which will be included in the film's special edition Blu-ray/DVD release. Written by Kamen Rider Zi-O's secondary writer Nobuhiro Mouri and directed by Satoshi Morota (Kamen Rider OOO, Kamen Rider Ghost) the film is set for a limited theatrical run in early 2020 and will be available on Blu-ray/DVD on April 22, 2020.
[Source: Nihon Hero]