Kiseijuu

Kiseijuu Synopsis: The story is about parasites from extraterrestrials that quietly invade the human body, and for some reason they prefer to eat humans to live rather than other animals. They invade the brain and take control of the body. They can take on any form they want once they've taken over their host's body: monsters with huge teeth, even winged demons...But most of them have a choice. Intelligence is hiding behind human forms and faces. So no one knows their secret except one person... A high school student (Shinzi Izumi) succeeded in stopping the parasite from invading his brain, but he was parasitized on his right arm. In order to survive, the parasite in his hand (Migi-do Shinji) has become Shinji's indispensable ally in the fight against other parasites to protect humanity. The war between parasites and humans has caused a lot of pain and loss, but it has a deep human meaning.