Global Cataclysm: Awakening of the Original Demonic Body at the Beginning

[Decisive Killing + Not the Holy Mother + Lone Wolf + No Heroine + Semi-Invincible + No System] The world is undergoing great changes, and races from other worlds are invading. This is a catastrophe for the human race. Earth demons, vampires, orcs... And other alien races walked out of the world's passage, and the world became purgatory. Chen Yuan died tragically in a catastrophe in his previous life. He was reborn and awakened his most powerful talent - the original demonic body. He took advantage of the opportunity and climbed to the top step by step.