ParasyteParasyte.

Parasyte (Japanese: 寄生獣, Hepburn: Kiseijū; lit. 'Parasitic Beasts') is a Japanese manga series written and illustrated by Hitoshi Iwaaki. It was published in Kodansha's seinen manga magazines Morning Open Zōkan (1989) and Monthly Afternoon (1989 to 1994). The manga was published in North America first by Tokyopop, then Del Rey, and finally Kodansha USA. The series follows Shinichi Izumi, a high school senior who is the victim of a failed attempt by a parasitic organism to take over his brain.