Kamen Rider Decade Gaiden: Kamen Rider EX

Kamen Rider Decade Gaiden: Kamen Rider EX (仮面ライダ―ディケイドGAIDEN (外伝): 仮面ライダーEX) is a side-story for Kamen Rider EX. It shows the origin of Kamen Rider EX and the first appearance of the Kurokage Rider Card.