Alien Defender Geo-Armor: Kishin Corps

October 1941. As World War II threatens to destroy the civilized world, something unexpected happens. An alien invasion. Even with these extraterrestrial attackers suddenly appearing, the Axis and Allies keep fighting their destructive war. Only the Kishin Corps and their giant Geo-Armor Robots, also known as Kishin, built from a captured alien robot soldier, stand between Earth and total annihilation. A teenager named Taishi suddenly finds himself at the center of a struggle over a mysterious black attaché case his father, Professor Tokamura, entrusted to him. The case holds the control mechanism for one of the giant Geo-Armor Robots, and the Japanese Kanto Army, the alien invaders, and the Kishin Corps all want to get their hands on it. Between the spies, the armies, the aliens, and the giant robots, Taishi is in for an epic adventure, if he can survive it.