Playing on server:
- Episode 1 Episode 1.5: Mystery of Naming
- Episode 2 Episode 2.5: Rules of the World
- Episode 3 Episode 3.5: Regal Spoilers
- Episode 4 Episode 4.5: A Confession of A Legend
- Episode 5 Episode 5.5: Sougo Tokiwa and the Mysterious Phone
- Episode 6 Episode 6.5: The Secret of Fourze 555
- Episode 7 Episode 7.5: Who is The Worst Black?
- Episode 8 Episode 8.5: The Terrifying Time Paradox!
- Episode 9 Episode 9.5: The King, God, and the Adult
- Episode 10 Episode 10.5: Mouri vs. Shimoyama
- Episode 11 Episode 11.5: Mysteries of 95DO!
- Episode 12 Episode 12.5: Interview with Future People
- Episode 13 Episode 13.5: Ghostly Teacher
- Episode 14 Episode 14.5: Pink Devil
- Episode 15 Episode 15.5: Supplementary Plan Forever (Part I)
- Episode 16 Episode 16.5: Supplementary Plan Forever (Part II)
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Kamen Rider Zi-O: Supplementary Plan - Season 1
A web-exclusive series released on Toei Tokusatsu Fan Club. It accompanies the airing of the main series' episode the day after it.
Genre: Sci-Fi & Fantasy, Comedy
Stars: So Okuno, Gaku Oshida, Shieri Ohata, Keisuke Watanabe
Crew: Kento Shimoyama, Ryuta Tasaki
Country: JP
Studio: Toei Tokusatsu Fan Club
Runtime: 5:14 minutes
Quality: HD
First air date: Sep 02, 2018
Last air date: Dec 23, 2018
Episode: 16 Episode
Season: 1 Season
IMDb: 3.7
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