An Anime that surrounds the life of 17 year old Shinichi Izumi when worms like creatures comes to Earth and starts entering human then eat the brain in order to control the whole body and when they do they eat other people for food. When one creatures enters into to Shinichi but fails to eat his brain and then they become one and join forces to defeat other creatures like him.
This Anime is very amazing when it comes to the plot of the story. It maybe gross because of the killings and eating of the parasites it has all the actions, suspense, thrill and drama with it. It is a very worth 24 episodes of watching.