In a small village, at night, the villagers were peacefully sleeping in their homes.

(Every human has various emotions. Some emotions are good, while others are bad.)

Suddenly, some soldiers came and began setting fire to their homes. The heat and smoke woke the villagers from their peaceful slumber, and upon seeing their houses burning, everyone began to scream and shout.

(Human emotions shape their aura. The more powerful the emotions, the more powerful the aura.)

The villagers somehow managed to escape their homes, but the soldiers started killing everyone who came outside. In a desperate bid to save their lives, people began running in all directions, causing chaos.

The soldiers were mercilessly killing the villagers. Children, the elderly, and women showed no mercy. They were cutting some down with swords, throwing others into the fire alive, and shooting some with arrows.

(If something wrong happens to any human, their aura leaves a mark of bad luck on those who wronged them. But if someone suffers extreme injustice...)

The soldiers cut the throat of a woman's husband right in front of her. The woman cried desperately, begging the soldiers to spare her child, but they threw her newborn baby into the fire.

Seeing this, the woman cried as if she had gone mad. In the end, the soldiers came to kill her, but she made no attempt to save herself. The soldiers bound her neck with a rope and began to strangle her. With her last breaths, filled with anger, hatred, and a desire for revenge, she looked at the soldiers and said, "Go to hell, you scoundrels."

(In such situations, the anger and hatred in a person's mind turn their aura into a dark shadow. This dark shadow lingers for years after a person dies. Most people regard this shadow as a ghost or spirit. Their belief isn't entirely incorrect, but what if many dark shadows are formed for the same reason?)

The soldiers killed all the villagers and began to leave, but suddenly, dark shadows emerged from the woman and the bodies of many villagers, gathering together to form a massive demon.

As soon as this demon was born, it began to laugh, and the soldiers could hear its laughter but couldn't see it. Suddenly, the demon appeared before them, and upon seeing it, all the soldiers turned to flee in fear.

But the demon was much faster than them. It killed each soldier just as they had killed the villagers. In the blink of an eye, the demon slaughtered every soldier and then roared loudly into the sky.

(Such demons are formed only when many dark shadows created by the same emotion come together. Their power depends on how strong the emotion that formed them was. We call these demons Sleeks. However, such spirits are not formed only from bad emotions.)

Far from this village, a woman had just given birth to her child. The women caring for her placed the baby next to its mother. Seeing her child's face, a smile spread across the woman's face.

Immediately, her husband entered the room, and when he saw the baby, his face lit up as well. At that moment, their joy knew no bounds as they embraced their child.

Suddenly, a white light emerged from both of them and began circling around the baby.

(This white light is formed from humans' good emotions, and when they gather together, they create a Zuek.)

(Nature's law was very straightforward. The job of Zueks is to protect those for whom they were created, while Sleeks exist to destroy that what created them. Everything was going smoothly until one day...)

A king was burning some people alive after binding them. Their families and the individuals themselves begged the king for mercy, but he ignored all their pleas and ordered his executioner to burn them.

As soon as the burning began, black shadows emerged from their bodies and came together to form a sleek.

The atmosphere became frightening with the emergence of the Sleek.

As the Sleek appeared before them, the king, his soldiers, and the executioner fled in fear. The demon spirit threw the executioner into the flames he had ignited and began killing the king's soldiers.

In the end, only the king was left, and the Sleek appeared before him. The king was paralyzed with fear, but the Sleek bowed before him.

(Sleeks had rebelled. They began siding with those they were supposed to destroy. This was because it would allow them to inflict more suffering on others, thus increasing their power and numbers.)

(This rebellion of Sleeks disrupted the balance of the world. Gradually, Zueks diminished while the reign of Sleeks and evil people spread across the earth.)

(Then, to restore balance to the world and eliminate the rebellious Sleeks, some special individuals emerged, gifted with a unique power from nature known as the golden eyes. Those with the golden eyes could see the auras of humans and these spirits.)

(They formed a group and created special weapons to fight against the rebellious Sleeks. Over time, they also learned to harness the powers of Zueks, earning them the title of Sleeks hunters.)

(In the history of this world, there have been only two centuries that changed the fate of the entire world. The first was the 13th century, which saw the beginning of the Sleek hunters, and the second was the 21st century, which witnessed his birth. It was clear that he was special, but no one could have guessed how extraordinary he would turn out to be. I was once his mentor, so no one can tell this story better than me.)

(This is the story of angels becoming demons. This is the story of the world turning into a graveyard. This is the story of a human becoming a god. My name is Masaki Yamamoto, and this story began with me, the day I first met him.)