累計部数1000万部の大ベストセラー! カラー原稿を完全カラー収録の完全版! シンイチ…… 『悪魔』というのを本で調べたが…… いちばんそれに近い生物はやはり人間だと思うぞ…… 他の動物の頭に寄生して神経を支配する寄生生物。高校生・新一と誤って彼の右手に寄生したミギーは互いの命を守るため、人間を食べる他の寄生生物と戦い始めた。
Parasyte centers on a 17-year-old male high school student named Shinichi Izumi, who lives with his mother and father in a quiet neighborhood in Fukuyama, Hiroshima, Japan. One night, tiny worm-like aliens with drill-like heads called Parasites arrive on Earth, taking over the brains of their hosts by entering through their ears or noses. One Parasite attempts to crawl into Shinichi’s nose while he sleeps, but fails as Shinichi wakes up, and enters his body by burrowing into his arm instead. In the Japanese version, it takes over his right hand and is named Migi (ミギー), after the Japanese word for “right”.
Because Shinichi was able to prevent Migi from traveling further up into his brain, both beings retain their separate intellects and personalities. As the duo encounters other Parasites, they capitalize on their strange situation and gradually form a strong bond, working together to survive. This gives them an edge in battling other Parasites who frequently attack the pair upon realization that Shinichi’s human brain is still intact. Shinichi feels compelled to fight other Parasites, who devour other members of the species they infect as food, while enlisting Migi’s help.
The series explores philosophical and psychological questions such as the meaning of humanity, humans’ relationship to the environment and other species, the role of instinct and love, and the inherent anthropocentrism of morality. Shinichi’s experience with Migi causes him to question if humanity has any right to claim moral superiority to the Parasites, while Migi and Reiko Tamura’s experiences with humans cause them to take on more human traits, such as love and sacrifice.