Earth's champion

In a world ravaged by an unexpected cataclysm that wiped out more than half of the planet population and with the introduction of mana into the world and bloodthirsty beast, a select few group of people called the awakens who was believed to be blessed and favoured by the heavens and weild mysterious and Godly powers. How will Our protagonist Casper overcome and thrive in this chaotic world of madness where strength mean everything????