Kaito, A child of the lost Catherine race, was taken by secret researchers and subjected to cruel experiments under the three moons. From their tampering, he awakened the forbidden Eclipse Power—a force that bends light and shadow at the moons’ alignment. Now marked with crimson eyes and chained to a scythe forged from his suffering, Kaito carries the weight of a power never meant to exist. Hunted as both weapon and monster, he must choose whether to embrace his cursed heritage or let the eclipse consume him.