Kamen Rider Build Episode 29

Due to the settlement of the representative battle, the war will now end! At least, that's what everyone thought would happen. The war did not end, rather, it has gotten much worse. Blood Stalk, who allied himself with Namba Heavy Industries, is finally starting to set his plans into motion. Stalk, who had stolen 10 of the Fullbottles that were under Touto's possession, inserts them into the Pandora Box. All of a sudden, the Sky Wall begins to move, and a phenomenon beyond belief is about to unfold before their very eyes...! (Source: kamenrider.fandom.com)