Shinichi Izumi

Lore & Background

The story begins when tiny worm-like aliens with drill-like heads called Parasites arrive on Earth, taking over the brains of their hosts by entering through 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.

Reader's Guide

Shinichi Izumi is a 17-year-old male high school student who lives with his mother and father in a quiet neighborhood in Fukuyama, Hiroshima, Japan. His defining trait is his forced partnership with Migi, a Parasite that took over his right hand after failing to reach his brain. This unique situation allows both to retain their separate intellects and personalities. Shinichi must fight other Parasites who devour humans as food, using Migi's help. The series explores philosophical questions about humanity, the environment, instinct, love, and anthropocentrism. Shinichi's experience causes him to question human moral superiority, while Migi and Reiko Tamura take on human traits like love and sacrifice.

Philosophical Evolution

The narrative transcends simple horror by delving into profound questions regarding the definition of humanity and the relationship between species. Shinichi's forced coexistence with Migi compels him to challenge the inherent anthropocentrism of human morality, questioning whether humans possess any legitimate claim to superiority over these alien beings. Conversely, the parasites themselves undergo a transformation through their interactions with humanity; Migi and other characters like Reiko Tamura begin to adopt distinctly human traits such as love and self-sacrifice.

The story explores complex themes including environmentalism, the role of instinct versus reason, and the ethical implications of survival. Initially conceived by creator Hitoshi Iwaaki to critique human egotism regarding their place on the planet, the series avoids looking down on humanity. Instead, it presents a nuanced view from an ordinary person's point of view, ultimately examining how both humans and parasites must navigate the destructive foolishness of nature versus the beauty of wild existence.

Creative Origins and Design

Hitoshi Iwaaki originally envisioned Parasyte as a romantic comedy where a character's hand moved independently, but he shelved this concept for seven years while working on other projects. Upon revisiting the idea, Iwaaki shifted his methodology, planning story events first before creating characters capable of handling them, expanding the scope from a planned three-chapter short to a full series. The design of Migi was influenced by Japanese traditional folk tales featuring disembodied hands with eyes or talking tumors, aiming for biological efficiency and simplicity.

Iwaaki's inspiration stemmed largely from childhood documentaries about food chains, which sparked his desire to write about human egotism without condescension. Environmental themes were central from the start, though the ending evolved significantly; a character named Goto was originally intended to survive and live in nature but was killed off by Shinichi because Iwaaki felt the theme of criticizing humanity had become too common by the series' conclusion.

Global Impact and Adaptations

Since its serialization began in Kodansha's magazines between 1989 and 1994, Parasyte has achieved massive commercial success, with over 25 million copies in circulation by August 2022. The series received critical acclaim early on, winning the 17th Kodansha Manga Award in 1993 and the Seiun Award for best manga in 1996. Its popularity extended globally through various adaptations, including two Japanese live-action films released in 2014 and 2015, and a highly regarded anime series produced by Madhouse that aired from late 2014 to early 2015.

The English dub reached Western audiences via Adult Swim's Toonami block between 2015 and 2016. In North America, the manga was published first by Tokyopop, then Del Rey, and finally Kodansha USA. More recently, a South Korean live-action spin-off titled Parasyte: The Grey premiered on Netflix in April 2024, cementing the franchise's enduring legacy across different media formats and cultures.