(Rebirth + apocalypse + showing off + decisive and ruthless + no heroine + power fantasy)
The apocalypse arrived, order collapsed, and everything sank into darkness.
Zombies and mutated beasts ran rampant, while countless people awakened as professionals.
After a hard-fought struggle by the military and large numbers of professionals, control of the world returned to humanity.
Then the demon race descended. They were cruel and bloodthirsty, and even Sequence-level powerhouses were no match for them.
Han Yun, reborn, has only three goals:
Grow stronger! Slaughter! Take revenge!