Sophia3515

The world ended, seven days of earthquakes, volcanic eruption and then came the meteor storm, bringing something worse—mutation.

Now, survivors are  group into Shifters, mutated humans and normals.
Ava Zhang was supposed to be a Normal. Useless. Disposable.

Thrown into a military-controlled bunker, she is sorted into Level Three—the bottom rank, where the weak are left to rot. Starving, overworked, and surrounded by desperate scavengers, she realizes that in this world, strength decides survival.

But Ava isn’t as powerless her hidden System activates. The Blueprint System—an ability that lets her design and invent anything, from weapons to high-tech defenses.

Apocalypse Trade Monopoly

Lucas looked up from his screen, golden eyes gleaming. "Good work, Beauty."

Ava wiped her hands on a cloth, glancing up from the last adjustments she'd made to the drones. "Of course it is. I don't do bad work."

Lucas chuckled, tapping the screen. "Come here. You'll want to see this."

Ava stood, walking over, eyes scanning the encrypted feed displayed on the tablet. Live surveillance footage. Multiple angles. Some of them weren't even from inside this bunker.

Ava frowned. "What am I looking at?"

Lucas tapped the edge of the screen. "This is what that lawyer sees. And by contract? I see what he sees."

Ava stiffened. "Wait—your contract lets you spy on him?"

Lucas grinned. "It's mutual. He watches me, I watch him. A fair trade."

: The Art of Contracts and War