Kinnikuman II Sei: Kyuukyoku no Chojin Tag Hen

Following the battle with the Demon Seeds, peace returns, and Mantarou spends his time idly. One day, he dreams of a tag match against the Original "Machine Guns" team—Kinnikuman and Terryman—at their peak, when they won the Universal Tag Team Championship. The dream is strange, as the team appears in their prime rather than their older selves. Upon waking, Mantarou notices mysterious floating entities in the sky calling themselves Time Choujins. They issue a bizarre challenge before vanishing without a trace.