Ten years after a brutal alien invasion, humans have evolved mutant abilities to survive. While the world fights on the frontlines, Kaihas chooses a path of shame. Labeled a coward for refusing to serve, he stays in the shadows to cultivate a secret power. Drawing on memories from a past life, he masters five primary talent trees rooted in his soul. As the war reaches a breaking point, Kaihas quietly upgrades his skills to face the nightmarish alien monsters. Will the boy they once ridiculed become the savior they never expected?