Parasyte: The Maxim (2014)8.1 /10

Storyline:  When alien parasites begin to take over human brains, a high school student, Shinichi Izumi, survives an attack, but the creature, Migi, takes over his right hand instead. Now, sharing one body, they are forced into a fragile alliance, taking care of deadly parasites while trying to hide from both friends and society.