Kamen Rider Soki

The moment the mysterious box discovered on Mars - "Pandora's Box" - was opened, a huge wall suddenly appeared! The story begins here. The wall known as the "Sky Wall" divided the Japanese archipelago into three parts, and thus their respective capitals "Eastern Capital", "Western Capital" and "Hokuto" were born. Among them, an unidentified life form called Smash appeared in the "Eastern Capital" and secretly pushed mankind into despair. What appeared in front of Smash was a young man wearing a belt and holding a mysterious bottle in his hand. "Transformation!" - The young genius physicist transformed into Kamen Rider Build and stood in front of Smash!