The Great Hero Who Travels Through Time and Space

I encountered a pit while walking on the road, and it was a movable pit! When I woke up, I found another world. What? Are there really angels in this world? And demons? Or a demon who knows the Holy Light? I originally wanted to follow the boss to make a splash, but unexpectedly I became a hero who saves the world. Why am I here? Where am I from? What is life and what is death? Everything is there... Hello! Wait, let me go save the world and then come back and talk about it!