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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).
==Synopsis==
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...!
==Plot==
==Cast==
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*, Ziku-Driver, Ridewatch Voices: 
*Ziku-Driver Voice: 
===Guest Casts===
*: 
*NeoDecadriver Voice: 
*: 
===Suit Actors===
*Kamen Rider Zi-O, Ohma Zi-O: 
*Kamen Rider Geiz: 
*Kamen Rider Decade, Kamen Rider Zi-O: 
*Kasshine: 
==Forms and Collectibles Used==
===Ridewatches===
*Watch used:
**Zi-O
***Zi-O, Decade, Build (in Decade Ridewatch), Fourze (in Zikan Girade)
**Geiz
***Geiz
**Ohma Zi-O
***Kuuga, Kiva, Ryuki
*Rider Armor(s) used:
**Zi-O
***DecadeArmor, DecadeArmor Build Form
**Geiz
***N/A
===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
Neo DCD Build.png|DecadeKamen Ride: Build
==Errors==
*to be added
==Notes==
*As part of Super Hero Time, this episode aired alongside episode 44, .
*Viewership: 2.8%
*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 .
*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. 
*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==
*TV Asahi's official episode guide for バック・トゥ・2068
*Heisei 20's official episode guide for バック・トゥ・2068
==References==
ru:Назад в 2068
Category:Crossovers