For some reason, Kōta Kazuraba becomes evil and uses black Lockseeds to transform. With the Black Orange and Black Lemon Lockseeds, he transforms into Kamen Rider Gaim Yami Black Jinba Arms. Being evil, he decides to attack his comrades and the other Riders.
The movie is joined by another Rider called Kamuro. His name actually means crown. Kamuro’s human form is the mysterious young man, Lapis, who transforms with the Silver Apple Lockseed. He uses a staff for a weapon called the Silver Blue Staff.
Kamen Rider Gaim: The Great Soccer Playoffs! The Golden Fruit Cup! will premiere in Japan July 19.
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Source: Televi-kun 2014 July Issue