Kinnikuman: Ooabare! Seigi Choujin

Fresh from winning the Choujin Olympics for a second time and defeating the Devil Choujin, Kinnikuman returns to Planet Kinniku as a celebrated champion. His triumph is interrupted by Bibinba, a princess from a rival clan who has been sent to kill him, only for their encounter to become far more complicated than either family intended.

Back on Earth, the Black Emperor unleashes his warriors against the Justice Choujin scattered around the world, exhausting them before the final assault. As Kinnikuman faces another personal challenger, his friends struggle to reach him in time for a decisive battle against an enemy seeking nothing less than conquest of Earth.