Prototype 3: Symbiosis with A-Guy

[Virus + Zombies + Eve of the Global Apocalypse + No System + One Female Lead]

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Since the end of World War II, the United States has sought a powerful new weapon capable of efficiently eliminating enemy forces, constrained by the doctrine of “mutual destruction” imposed by intercontinental nuclear missiles.

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It secretly formed a biological warfare unit, codenamed Blackwatch.

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The unit was tasked with researching a biological agent, the Redlight Virus/Blacklight Virus, in an attempt to create a god. But the virus was accidentally released.

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Two major outbreaks struck New York and Manhattan, spawning countless zombies, monsters, and mutants. By devouring others, they evolved without limit, gaining the power to destroy the world and the ability to live forever.

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Though Blackwatch quickly suppressed the outbreaks, the Red Infection Zone was never eradicated. Tall walls were even built, with large numbers of troops stationed along them to prevent outsiders from prying into the zone.

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The hand behind it all doesn't want the virus to die down!

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The two apex predators, Alex Mercer (A) and James Heller (J), clashed in an all-out war. It ended with A deliberately throwing the fight and losing.

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A's fate is unknown, while J vanished from public view.

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King, a Dragon Nation spy, was betrayed by a friend while investigating the virus's original strain and tragically turned into a zombie.

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But misfortune brought fortune: his body fused with A's, evolving him into a mutant. He kept devouring his own kind until he rose to the top of the food chain.

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Uncover the hand behind it all and unravel the secret of why the Red Zone persists.

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Why did A turn evil? Why did he throw the fight? Was A really killed by J?

With the development team disbanded, this secret lay dormant for over a decade.

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Now, I'll be the one to answer these questions.