Ultimate Firepower

This world is not just the one that ordinary people are familiar with, there is also an underground world that ordinary people will not come into contact with.
Government agents deal with troubles in secret, and killers hired by chaebols solve problems privately.
There are killers, mercenaries, arms dealers, and agents. There is the dark web that connects this world together, and there are tycoons who try to control everything with money.
Gao Yi broke into the underground world, and being invincible in close combat, he carved out his own territory.
But there are guns in this world. At seven steps away, the gun is fast.
Within seven steps, the gun was accurate and fast.
Gao Yi’s punch is fast within three steps.
If you can't beat them, just join them. Gao Yi chooses to take them all.
I want it all, to become the king of killers in the mercenary circle, the king of agents in the eyes of killers, the king of killers in the eyes of agents, and the king of intelligence in the eyes of arms dealers.
Until he was crowned king in the entire underground world, Gao Yi was the ultimate firepower.

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