Mysterious Revival - Chapter 697 - 664 Peril beneath the Calm

This is a story about the protagonist getting the system, going crazy in the biochemical apocalypse, producing aircraft and tanks, destroying zombies, saving good people and killing bad people.

- Description from novelbuddy

Michael Alastair never mattered. In a world where strength was everything, he was nothing—just another powerless kid, easy to break and easier to forget. When his tormentors finally took things too far, his story should have ended in that alley, bleeding and alone.But fate had other plans.In the void between life and death, a voice spoke. Cold. Sharp. Amused. [NEW TALENT UNLOCKED: WRITER’S LEGACY]. A system unlike any other—sarcastic, relentless, and strangely invested—offered Michael a power beyond reason and a purpose he never imagined. Now, armed with an SSS-rank ability and a mission to rise, he’s back. And this time, he won’t just survive—he’ll rewrite the rules.

Freshly turned eighteen, John Newman, a helpless nerd, suddenly gets video game abilities granted to him. A mysterious higher power, a secret Abyss of magic beneath the surface of the normal world, mages, martial artists, eroticism, tragedy and a harem of hot girls awaits.

Astra woke up in a forest with no recollection of her precious life.The only thing she knew was that she had a system with two parts; one was a Survival System, and the other was a...Wait, what?!A Breeder System?!