Hunter level determines everything. Lin Fan, an E-class hunter, struggled in despair, just to give his sister a safe future.
An unexpected desperate encounter not only allowed him to obtain the mysterious [Killing System], but also allowed him to glimpse the terrifying truth of this world-ferocious beasts are not the only enemies. Behind him are his relatives who need to be protected, and in front of him is the road to becoming a god full of thorns and conspiracies.
From the trials in the Abyss Tower to the mystery of the ancient "contract", Lin Fan's only choice is to hold on to the knife in his hand and fight his way out!
