Unify the Different Worlds, I Am the King

This is a crazy era, this is a strange world. Everyone on this continent has their own ordinary life trajectory, but there are different murderous intentions everywhere. People are constantly wandering and coexisting in a peaceful world and a difficult world to survive. Some people "live" and some people "die", as if everything is so numb. Until one day, a young man from another world came to this continent and broke the originally balanced life on this continent...