Drifting through the hell of earth

In this world, living to old age is a rare blessing. Dying from disease or accidents is considered lucky compared to the horrors many face. Black spores poison the livings, monsters from hell attack, and brutal slaughters are common.

A young man dreams of finding his missing father. but he was pulled through a series of deadly hunting games that seem never ending until the Hell on Earth is empty.

But why?