Project will be the second in their RIDER TIME series.
In the new spin off, Kamen Rider Ryuki and many of the other Riders who appeared in his series will rise again when the mirror world returns.
Takamasa Suga, who portrayed Shinji/Kamen Rider Ryuki in the original series stars in the same role.
Kamen Rider Zi-O cast members So Okuno and Gaku Oshida will also appear with additional cast members being announced at a later date.
This will be the second RIDER TIME, the first being the previously announced Kamen Rider Shinobi spin off.
Source: Eiga Natalie