Shattered realities

Prologue: In a world where reality has changed and now creatures only seen in the fantasy books that children read exist along with humans, gods and demons . A new era, a new earth that humans now have to survive in, humanity is gone, the world follows the rules of nature, the weak perish and the strong thrive. Whether this is reality or illusions cannot be so said for certain. Then again how can anyone check if their reality no longer exists? After waking up from being sealed Felix finds himself in a completely new world where gods and demons rule. Struggling in the reality he now finds himself in he has to constantly check if he isn't losing his mind and that he isn't dreaming. Can Felix survive this new world or will he be easy prey for the many dangers hidden out there?