Takeshi Ogasawara

Half a year after the downfall of Gorgom, Kotaro Minami has gotten a job of a helicopter pilot in a business owned by the Sahara family. Kotaro is later captured by the Crisis Empire and offered a place in their group. When Kotaro refused, his King Stone was shattered and he was thrown into space where the sun's radiation mutated his King Stone and he mutated into Kamen Rider Black RX. With his new powers, he battles the Crisis Empire and thwarts their plans to take over Earth. (mydramalist.com)

Sometime in the not so distant future, Earth is invaded by the evil Don Horror and his Makuu Empire. Rather than simply cause the End of the World as We Know It, Horror wishes to cause fear and panic amongst the populace, as well as steal every valuable his mooks can get their hands on. To thwart them, Space Sheriff Gavan of the Galactic Union Patrol arrives on Earth. Under the guise of Retsu Ichijôji, Gavan and his sidekick Mimi fight the never ending battle against evil. (mydramalist.com)

Golgom and Shadowmoon took over the town of Yubure. A scientist, who has some codes to put a mecha online to destroy Black, escaped. Minami Kotaro (Kamen Rider Black) was shopping with his family and saw the man get out of a truck, looking scared. Kotaro follows the man and ends up saving him. The man tells Kotaro about Yubure, and Kotaro rides to the town to find it all deserted, or is it? Kotaro meets up with a group of people, they tell him of the problem, and he goes straight to the...