Izu Obi: 4 books

In a dystopian future, Nigeria is overrun with rampaging monsters, blood sucking vampires, and biologically enhanced assassins. Vane is one such assassin. Grown from a lab, he had become an emotionless killing weapon. Or so they thought... He had only one charge; kill the innocent young doctor, Vanessa...

The tale is that of a man. Just a man. To everyone he is just a security officer running his rounds and doing his duty. His duty! Duty is such a strong word. And yet his acts of depravity, mutilation, and torture screams an insane serial killer. But do you ever stop to wonder what goes on in the head...

You are doomed! Your head hangs heavy on your neck as you step out of the school in shame. Your father is going to kill your mother. You can't escape your father's abuse anymore, or your mother's screams. Judgement day comes and your mother's skin is being shredded from her bones. But do you do anything...

In a world full of monsters, assassins, and psychopathic vampires, it's a miracle any one left is sane. A young emotionless assassin finds himself cut off from his past life, and on a treacherous journey into forbidden territories. He, alongside a group of scarred heroes, have come with a sense of vendetta to do the unthinkable that would either save them, or damn them all to hell.