Vengeance of Almighty Villan

In this world where demons, ferocious beasts and mysterious races and mysterious power exist. The human race had been at war with the alien races. A sudden invasion by aliens has forced humanity to a corner where the war became a fight for survival. Just when people thought they had completely annihilated them all, They began to rise again. Several dimensions and monsters appear. In the middle of this, a young boy was born, In a world where only the strongest survive. He lives a life of loss and suffering. Darkness starts to devour him but a mysterious system awakens and a new chapter start. .............Now...The...Show.....Begins...........