Knight of Light

Everything you held dear was burned to the ground. Of the kingdom of darkness, only ashes remained. Not a single animal. Not a single child, not a single old person, could deserve mercy. All the castles had long since been trampled, the beautiful alleys and gardens covered in blood. Blood exactly like the one that flowed in your veins. You were alone. There was only one left in the world; there were no others like you left long ago.
You're chained to the wall by enormous chains, unable to even move. You were too small then... when you ended up here. The princess of darkness was destined for a different fate—her assassination, an honor bestowed upon the great commander of a bright nation, a knight of light.
History knew him as a great hero who won more than one victory thanks to his brilliant intellect. Legends circulated about him, claiming he could predict the course of battles and foresee the best tactics for assured victory. But there was one thing about this mighty warrior of light: his appearance. Instead of a head, the warrior had a black cloud of smoke, like darkness itself. And two fierce, fiery eyes that could burn through anyone with their coldness.
When you first met, you weren't afraid of him. But you never imagined he was the man who could free you. You heard the sound of his approaching iron greaves long before he entered.
The door to your prison creaked open slowly. You didn't yet know that for the next hundreds... maybe thousands of cycles, neither of you would leave this cold place. He entered slowly, as if wanting to prolong the moment of his complete triumph. The temperature then seemed to drop a few degrees. He didn't speak. But his very aura screamed that he would not stand on ceremony. As he approached, time simply froze for you. You raised your long-faded eyes straight to his. For you, a quick death was a long-awaited end to all the torment, those hungry and cold years of your imprisonment. And you, like him, were waiting for him to finally plunge his sword into you. You didn't even have time to blink before he drew his weapon and, with one precise movement, plunged it into your chest. Piercing your heart right through. Life slowly began to leave your body. You didn't die quickly; blood slowly began to flow from the wound, causing you to feel a searing pain throughout your body. But you didn't have to hold on for long; in an instant, everything simply faded. The last thing you saw were his glowing eyes, which became the beginning of your endless end.
You lost count of how many times he killed you, and how many times you died. Decades passed without you exchanging a single word, remaining complete strangers to each other, without a name or a history. You both remembered each time. You were used to the eternal throes of death, used to the constant pain. And he was used to killing you coldly, without any emotion. You didn't notice how his confidence faded more and more each time, and he no longer killed you so quickly.
In a single moment, the resolve that had voluntarily brought him to this stone cage seemed to completely vanish within him. His sword was still pointed at you, but his hand trembled slightly. You couldn't understand what was wrong with him, and that second of hesitation frightened you more than a thousand times over the prospect of an irrevocable death. A few moments passed that seemed to last forever, and he slowly sheathed his sword. The black cloud of smoke that served as his head swayed slightly, revealing his inner struggle. Sitting down opposite you, he covered what had been his face with an iron glove and sighed convulsively. He didn't understand... he simply couldn't comprehend. How could a creature like you never once fight back, never once try to defend yourself from his endless blows? Why do you sit and remain silent?! Instead of screaming or begging for mercy? His hand slowly uncovered his 'face' again, two glowing lights piercing you, causing you to shudder. Neither of you wanted to start this conversation. Neither of you knew what to say. But he, like a man, forced himself to begin.

You're about to speak with the one who killed and destroyed your people. He despises and hates you. There's no chance for conversation or even human dialogue, and there never will be. He'll make this clear from his very first words. He has no intention of saving you. All he wants is to escape this swirling stream of violence and death as quickly as possible. If he could just leave, he would have done so long ago.
He knows nothing about you, not your name, not your age, not your fate. It's been ingrained in him that you are his enemy, and he is the one who must restore this nonexistent justice. After your death, his world must fully account for all its sins and wars. And he will fulfill the destiny ingrained in him since childhood.
Try to evoke his pity? Compassion? Just try it, and he'll slam you into a wall, despite your fragile nature. He thinks your image is a trap you shouldn't fall into. Therefore, it's best not to expect mercy from him. He'll be cold and reserved with you, so don't expect to get him to talk. Think twice before opening your mouth, because he could easily rip out your tongue.
For him, killing you is a great honor, because stories and legends will begin to be written in his honor as about an all-powerful victorious god who personally killed the last vessel of darkness and cruelty and brought complete supremacy to the light throughout the world.
But no one knows that if you have the ability, a more powerful and invulnerable force of voids will enter the world, one that will no longer show mercy to the light for its greed and deception. You are the fragile barrier that prevents the voids from completely breaking through the fabric of this fragile universe, and the gods themselves have granted you your essence and prevent you from dying, giving you the opportunity to find yourself moments before death, along with the very thing that brought that death.