This article is about a/an episode in Kamen Rider Zi-O.

Back to 2068 (バック・トゥ・2068 Bakku tu Nisen-rokujūhachi) is the fifteenth episode of Kamen Rider Zi-O. It features the first appearance of Ohma Zi-O since episode 1.

This episode is accompanied by the fifteenth episode of Kamen Rider Zi-O: Supplementary Plan web series, Supplementary Plan Forever (Part I).


Why does Sougo want to become a king in the first place? Sougo starts to tell Tsukuyomi about the continuous dreams he's been having. Just then, a giant event, just like the one in Sougo's dream, suddenly starts to manifest! A giant mecha suddenly appears in the sky! The demonic king's servant from the future, Kasshine suddenly appears! And thanks to Decade's intervention during their fight, Sougo gets blown 50 years into the future...!


"According to this book, average high schooler Sougo Tokiwa embarks on a path which leads him to become the demonic king of time, Ohma Zi-O. In order to prevent this, Geiz and Tsukuyomi travel to the present. But Sougo Tokiwa declares that he will become the greatest, most beloved demon king and so he continues to gather the powers of the riders. However, that confidence of his will soon be shaken once he confronts himself, having became Ohma Zi-O. Oh dear, I've read too far again..."


Guest Casts

Suit Actors

Forms and Collectibles Used


Rider Cards

  • Card Used:
    • Kamen Ride: Decade, Build
    • Attack Ride: N/A
    • Form Ride: N/A
    • Final Form Ride: N/A
    • Final Attack Ride: Build
    • Final Kamen Ride: N/A
    • K-Touch: N/A
  • Forms:
    • Decade, Decade Build RabbitTank Form


  • to be added


Zi-O EP15 CS
  • Closing Screen Ridewatches:
    • Kamen Rider: Zi-O and Geiz
    • Ridewatches:
      • Zi-O: Zi-O, Decade
      • Geiz: Geiz
  • Count at episode end
    • Watches in Zi-O's possession: Zi-O, Build, Ex-Aid, Fourze, OOO, OOO Tajadol Combo, Gaim, W, Kuuga, Ghost, Decade, Bike, Phone, Taka, Kodama
    • Watches in Geiz's possession: Geiz, Drive, Cross-Z, Faiz, Wizard, Genm, Bike, Phone
    • Watches in Tsukuyomi's possession: Phone
    • Watches in Ohma Zi-O's possession (At Least): Kuuga, Kiva, Ryuki
  • The title of the episode is based on the film series Back to the Future.
  • This is the first episode that Tsukasa transforms into Decade's default form in Zi-O.
  • This is the first episode of the series to not be a tribute episode, however it does feature the appearance of a past Rider.
  • For unknown reasons (either a production error, or a new function of Neodecadriver), Decade needs to use KamenRide: Decade card to transform back to his default form. In previous appearances, Decade could simply do that on his own.
  • The clash between Zi-O and Ohma Zi-O utilizes three Ride Watches in the exact order Decade visited their respective Riders: Kuuga, Kiva, and then Ryuki.
  • Interestingly, when Zi-O utilizies the powers of said Riders above, he briefly poses as the Rider of the respective powers that was activated. 
Oma Zi-O the violinist

Ohma Zi-O carrying a violin after activating the Kiva Watch

  • After activating the Kiva Ridewatch, for a brief second, Ohma Zi-O is seen carrying a violin, presumably the Bloody Rose, to deflect Zi-O's colony of energy bats.

External links


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