Parasite

"It is disturbing how invisible it all is, the way they infest your body, attaching themselves to your mind and taking control of you. Forcing your empty shell of a body to go about normally as if nothing were wrong. As if you were not being eaten alive on the inside. As if you were not enduring the slowest, most painful experience of death possible. As if you won't drop to your knees, allowed a single scream of agony to escape your lips as they let go of control for a single moment before you fall. My planet is almost on its knees in mercy to them: Corpse parasites."