Shougezhe

Shougezhe summary:

In a world infested with "subhumans", the lives of humans are full of danger and fear. But along with the existance of "subhumans" is the existance of "reapers" whose livelihoods are to protect humans and rid world of "subhumans". Among their ranks is one who is famous for being the true "reaper" but his identity remains a mystery.