The world where limit doesnt exist

he didn't remember how, nor why he was here...the last thing he see before coming here was..a strange light, flickering in the abbys. why is he here? and what does this world want from him? A world where the concept of limit is thrown out of the window, that destruction is just a simple flick of a wrist, a world where even destruction of a planet is consider normal? Terra..just what lies beyond this world? A world that doesnt follow any rule at all, what is this country he land where dead is consider a miracle? Why and is there more beyond this wall?