Air date: 2017-09-02

Runtime: 30 min

Sento Kiryu demonstrates how he transforms into Kamen Rider Build Rabbit/Tank Form and introduces his new Best Match: Build Gorilla/Mond Form.

Air date: 2017-09-10

Runtime: 30 min

Gentoku Himuro films a FausTube video in their secret lab base showing his viewers three things: his transformation into Night Rogue, the combination of the Transteam Gun and the Steam Blade: the Steam Rifle, and the Steam Rifle's finisher: Steam Shot with a Faust Bottle.

Air date: 2017-09-17

Runtime: 30 min

Ryuga Banjo demonstrates how to transform into Kamen Rider Cross-Z and use the Dragonic Finish. However, the simulation come to a close as Ryuga's trousers are unexpectedly ripped.

Air date: 2017-12-24

Runtime: min

It's revealed the real facts of the case that Katsuragi was murdered.