A web-exclusive series released on Toei Tokusatsu Fan Club. It accompanies the airing of the main series' episode the day after it.
| Title | Kamen Rider Zi-O: Supplementary Plan |
|---|---|
| Genres | Sci-Fi & Fantasy Comedy |
| First Air Date | 2018-09-02 |
| Last Air Date | 2018-12-23 |
| Episode Runtime | 00 Hours 05 Minutes |
| Total Season(s) | 1 |
| Total Episode(s) on All Seasons | 16 |
| Runtime | |
| Production Companies | Bandai Namco Entertainment, Toei Tokusatsu Fan Club, Toei Company, Ishimori Productions |
