Parasyte

From Kodansha: They arrive in silence and darkness. They have a hunger for human flesh. They are parasites, alien creatures who must invade–and take control of–a human host to survive. And once they have infected their victims, they can assume any deadly form they choose: monsters with giant teeth, winged demons, creatures with blades for hands. But most have chosen to conceal their lethal purpose behind ordinary human faces. So no one knows their secret–except an ordinary high school student. Shin is battling for control of his own body against an alien parasite, but can he find a way to warn humanity of the horrors to come. Note: Won the Kodansha Manga Award for General Manga in 1993 and the Seiun Award for Best Comic in 1996