Kamen Rider Build: Transformation Lessons ~The Laws Of Transformation Are Set!~ (2017 - 2017)

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.

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.

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