Kiseijū (Parasyte)

Kiseijū (Parasyte) is a Japanese manga and anime series about alien parasites that invade Earth, taking over human bodies. One parasite attempts to worm into the main character, Shinichi, but fails and instead inhabits his right hand. This unusual partnership forces Shinichi to confront moral dilemmas, as he battles other parasites threatening humanity. The story explores themes of identity, consciousness, and the nature of humanity, blending intense action with philosophical reflection. It offers a gripping narrative about coexistence and the boundaries of what it means to be human.