Uchuu Kishi Tekkaman Blade: Nagaki Tatakai no Jokyoku

As Earth weakens under pollution, the alien Waldaster forces begin an invasion meant to seize humanity's remaining future. Joji Minami survives their assault and gains the ability to enter the armored form of Tekkaman with the aid of the robot Pegas.

Fighting beside the Space Knights, Joji confronts enemy machines and commanders while humanity searches for a way to endure. Every victory demands another sacrifice, turning his transformation into the opening movement of a long struggle for Earth's survival.