In Yesterday's Radiranger it was announced that voice actor Hiroshi Kamiya will play a role in Drama CD "Drive Saga: Kamen Rider Mach". This role is not known yet & the recording for his role is also not started yet.
Official Announcement can be heard in the second part of the video.
Videos by Cast
Sougo Doing Push Ups During the Filming of Zi-O
Seiji Takaiwa Taking Break During Filming of Zi-O
Eitoku doing Push Ups during Filming of Zi-O