On Thirteenth Avenue, acid rain is eroding the crumbling city. Bureau Zero's gene factory is hidden under the wasteland. The wails of clones and the roar of machinery interweave into a background of despair.
Nian Nian is an experimental subject abandoned by Bureau Zero. Her left eye was eroded by the radiation from the abyss. She is half-blind but possesses strange powers. The black nails on her neck are her only bond with her father, the "original monster". Her father disappeared ten years ago, and she became a killing machine until she met Xiao Qi, a nine-year-old experimental subject with a broken arm who was being raised as a "part" in the cold storage of the Paradise Club.
Xiaoqi dragged the scrapped mechanical arm like a wild dog struggling in the gutter, but when Nian Nian was about to die, he used a rusty dagger to grind out the sharpest fangs for her. Two "defective products" abandoned by the world became each other's only salvation - Nian Nian replaced Xiao Qi with a military prosthetic body, entered a black boxing match half-blindly, tore apart mechas with his bare hands, and bloodbathed the Black Tiger Gang;
Bureau Zero's pursuit never stopped. The radiation cloud in the Abyss Tower became thicker and thicker. My father's clone was soaked in the culture tank and cried out for blood. Nian Nian clutched the coordinate chip that Xiao Qi had paid for with her life, her left eye was scarlet and she went berserk. She tore through fifty white mechas with her bare hands and rushed to the top of the Abyss Tower on a bloody road.
When the pure white headquarters is dyed scarlet, is what is hidden behind the black door the ultimate secret of the father, or is it the truth about the destruction of the entire world?
"Whoever touches my sister will be shattered into ashes, and whoever owes my father will pay with blood!" The half-blind tyrant's road to revenge begins with the massacre of Bureau Zero!
