"It's finally over..." he mumbled before chuckling sarcastically, ridiculing himself in the process. He was worn out after defeating the Lord of the Abyss, the tyrant who invaded the planet Terre. His left eye was oozing blood, his right arm was chopped off, and his body was covered in wounds. His long, shiny silver hair was filled with dust, and a few strands were burnt. The sword that he treasures the most was lying beside him, and all that was left was the hilt and the ricasso.
He couldn't help but wander off his gaze. And all he could see were the bodies of his dead comrades, the undying flames that continued to burn everything, and the destruction caused by humanity's retaliation against the Lord of the Abyss.
Then he used his energy to sense all the existence in the world. But contrary to his expectation, he felt nothing. There is no breath of life except for him. Even the tiniest organism failed to survive against the wrath of the Lord of the Abyss.
So what's the purpose of all of their sacrifice if the world is already ruined? When there is no chance for an organism to resurface again, unlike the mass extinctions in the previous eras.
"Should I return back to the past?" He deliberated before staring blankly at the runestone in his hand. He got that wishing runestone after defeating the Lord of the Abyss.
After long contemplation, he stood up and destroyed the runestone before mumbling a few words that changed the balance of the past, present, and future.