A kid finds out he's a reincarnated alien guardian and has to immediately start saving the world with three superpowered strangers he just met. The OVA format means this thing moves at sprint speed, no filler, no time for doubt, just one collision after another from desert to Manhattan. By the final episode you've either bought into Koichi's sudden cosmic responsibility or you haven't, and the show doesn't care which.
Koichi's ordinary teenage life shatters the moment he discovers the truth: he's the reincarnation of an ancient alien guardian sent to Earth centuries ago. Now the planet's fate depends on him awakening dormant psychic abilities he barely understands. Thrust into a cosmic war, Koichi joins three powerful alien companions, each carrying their own supernatural gifts. Together they form humanity's last defense against a ruthless cult leader orchestrating global destruction from hidden strongholds across the world. The conflict pulls them from desolate Asian wastelands to the gleaming streets of Manhattan, always one step behind an enemy determined to reshape civilization. Each battle tests Koichi's resolve as he grapples with newfound powers while racing against time. The stakes escalate toward an inevitable confrontation in a fortress buried deep within the Swiss Alps, where the cult's enigmatic mastermind waits. Speed and violence define every encounter. Koichi must transcend his limitations as an ordinary person and embrace his role as Earth's protector before the darkness consumes everything.