Getter Robo Devolution: Uchuu Saigo no 3-punkan  

Getter Robo Devolution, Getter Robot Devolution: The Last 3 Minutes for Universe, ゲッターロボ DEVOLUTION ～宇宙最後の3分間～

The beings referred to as Devolved are extraterrestrial creatures who attack our planet through distortions in space. Tragedy has always been present in Ryouma's life, and when his high school is attacked by these aliens, he sees it as just another chapter in a long line of suffering. However, amidst the monsters deadly gaze, a professor emerges with an offer of power. This professor introduces Ryouma to the Getter Rays, a mysterious cosmic force that allows him to control the ultimate fighting machine: Getter Robo!

Getter Robo Devolution: Uchuu Saigo no 3-punkan is a full remake of the original Getter Robo series.The series has been published in English as Getter Robo Devolution by Seven Seas Entertainment since June 26, 2018.