When does Parasyte -the maxim- return?

Parasyte is a Japanese science fiction horror manga series written and illustrated by Hitoshi Iwaaki. It was published in Kodansha's Morning Open Z?kan (1989) and Monthly Afternoon (1989 to 1994) 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. The parasite, Migi, instead infects and takes over his arm, and both are forced to fight other parasites. The series explores philosophical and psychological questions such as the meaning of humanity.