Parasyte: Part 1 (2014)

In a world plagued by a series of gruesome murders attributed to mysterious parasitic creatures, high school student Izumi Shinichi finds himself in a life-altering predicament. A parasite has infiltrated his body, taking over his right hand, and now he must navigate the complexities of coexistence with this alien entity. As he grapples with the loss of control over his own body, Shinichi discovers that he is not alone in this struggle, as other humans have also become hosts to these deadly parasites, leading to a terrifying battle for survival.

As the body count rises and the truth behind the so-called 'Mincemeat murders' begins to unravel, Shinichi's journey becomes one of self-discovery and moral questioning. He must confront the nature of humanity and what it means to be alive while forming an uneasy alliance with his parasite, whom he names Migi. Together, they face not only the threat posed by other parasites but also the challenge of understanding each other's motives and desires, blurring the lines between friend and foe.

In a race against time, Shinichi must harness the unique abilities granted to him by Migi to protect those he cares about while uncovering the dark secrets behind the parasitic invasion. As he delves deeper into this harrowing world, he learns that the fight for survival is not just against the parasites but also against the darker aspects of human nature itself. With every encounter, Shinichi's resolve is tested, leading him to question whether he can maintain his humanity in the face of such overwhelming odds.