In 2020, a country confronts the widespread menace of the "Others"—enigmatic creatures that descend from the heavens and consume human brains. Simultaneously, psionics—a hormone found within humans that grants certain individuals extrasensory powers effective against the Others—are discovered. Consequently, the nation"s founder creates the Other Suppression Force (OSF) to fight these beasts and protect humanity. Often called the Scarlet Guardians, youths possessing psionics undergo rigorous training to join this elite unit.
On a day set for an induction ceremony honoring the exceptional trainees who have finished the arduous course to become Scarlet Guardians, one of those bright young warriors is Yuito Sumeragi. He is the determined son of the nation"s founder and was rescued at age five by a woman from the OSF. To repay that debt, he enlists in the organization, eager to apply his training. When he meets his new teammates, a troubling issue emerges—the woman who saved him years earlier bears an uncanny resemblance to one of his comrades. Their oath binds them to protect all, a promise that fuels their relentless pursuit of justice. Yet this is merely the surface problem; beneath it lies a conspiracy capable of shattering the entire nation.
