A scan related to the upcoming Full Bottle which will appear in YouTube Spin-off Drama had listed the Card Full Bottle with Camera Full Bottle which will transform Kamen Rider Build into Kamen Rider Build Decade Form.
The previous two YouTube Spin-off Drama of Ghost & GENM had Kamen Rider of that Series transform into the Legend Rider Form but will it be still be there this time with Sento Kiryuu travelling to Hokuto & Seito in search of Best Match Full Bottles. I can get one common thing between Kamen Rider Decade & Build that both are travelling different places (Decade used to travel different Rider World & Build is travelling different Countries in Japan), both can transform into their Previous Sempai Riders, both have lost their memory.
But in the end is there any use to transform into Decade when he can just use the Full Bottles of Legend Riders to transform.
In end just remember! He is passing through Scientist? HENSHIN! KAMEN RIDE DECADE!
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