Concept-Level Defense: Death Is at the Attacker's Expense

I woke up in the extreme night hell, and a distant voice came into my mind: "I will not die. Those who kill me will die in my place." When I realized that I was almost invincible, that distant voice appeared again: "I will die for the souls killed by my sword." I found that everything seemed to be reversed for me … It was a world without the sun. The "sky fire" hanging high in the sky divided the world into extreme day and extreme night. When I escaped from the extreme night hell, I realized that how big the world is, how big the hell is.