Synopsis

The “Amazon Project,” an experiment to develop artificial life forms into humanoid beings, was being conducted in secret at a certain pharmaceutical company. However, due to an accident two years ago, approximately 4,000 test subjects were released into the city. The Extermination Squad, experts in eliminating these experimental subjects, had been working tirelessly to deal with the aftermath. Meanwhile, under the care of Mizusawa Reika, the person responsible for the “Amazon Project,” lived a young man named Mizusawa Yu, who had been taken in as her adopted son two years earlier. He, too, was beginning to notice changes within himself. At the same time, Takayama Jin, an Amazon who hunts other Amazons, had begun taking independent action. This man’s true purpose remained shrouded in mystery. As various schemes and intentions intertwined, the story would dramatically unfold through the fateful encounter between Yu and Jin.