Other Title: 仮面ライダービルド-怒りのムーンサルト, Kamen Raidā Birudo-Ikari no Mūnsaruto
Summary: Tatsuya, who knows about Sento's past, has been turned back into a Smash
by Ryuga pouring back the essence into him. Sento and Ryuga begin to
fight each other with intense anger. It's almost as if no one can stop
them from hitting each other. He is trying to create a device so that
Ryuga can transform using a Build Driver...