Here's a cleaned-up and polished version of your latest story chapter for The Unknown Prince, keeping your tone and style while fixing grammar and flow:
Chapter: The First Challenge
After a peaceful night's rest high in the trees, Prince Eyrix awoke full of energy. But beneath that energy burned pain—the pain of betrayal. His father's treachery had left a scar deep in his soul. He clenched his fists, swearing to one day burn the kingdom down and take his father's life, so he might understand the agony he had caused.
Climbing down from the tree, Eyrix headed into the woods in search of the dragon. But on the forest floor, he found a message burned into the earth: "Find me."
This was the first challenge.
Without hesitation, he ran. His legs ached, but he did not stop. The prince was determined.
Meanwhile, back in the castle, Prince Jhon was training harder than eversharpening his skills to one day avenge his lost brother. Handsome and noble, with dazzling green eyes and bright white hair, Jhon was every bit a prince of legend. He trained day and night, body and mind, believing his brother had died by the hands of monsters.
Unbeknownst to him, the true monster sat on the throne.
Unlike Eyrix who was wild, rash, and angry Jhon was calm, kind-hearted, and disciplined. The two had been opposites, but they had loved each other deeply. With Eyrix gone, Jhon was broken.
Though he suspected his father's involvement, he had no proof so he said nothing.
That evening, after finishing sword practice, Prince Jhon went to the king.
"Father," he said, "I have mastered the sword. I have learned the weaknesses of the monsters. Please, let me go and—"
"No!" the king barked, cutting him off. "I can't let you go. You'll die out there! Your brother is dead, Jhon. He is not coming back!"
Jhon's voice rose in anger. "Yes, he's gone. But what kind of king would I be if I didn't avenge him? And what kind of king are you if you couldn't even protect your own blood?"
"You will not go," the king roared. "You are not king yet. You will do what I command!"
Without another word, Prince Jhon stormed out of the palace.
Soon after, a spy arrived with urgent news.
"My king," he said, "a creature with four wings and four legs is calling lightning down near the farmlands."
"Ready the troops," the king growled. "And bring my son. He will see what it means to fight a real monster."
"My lord," the spy hesitated, "forgive me, but… this monster is no ordinary beast. We may not win. Perhaps retreat is wiser."
The king's eyes darkened. "You dare question me, peasant? Cut off his head."
"No! Please, I meant no disrespect" the spy cried as he was dragged away to be executed.
The king left with his army, Prince Jhon by his side.
Upon reaching the farmlands, they saw it. A mighty beast stood before them the Great Dragon Storm. Its four legs crushed the earth with every step. Its wings stretched wide across the sky. Its roar shook the heavens.
Lightning crashed down, barely missing the king. The shockwave sent him flying. He lay unconscious as his troops rushed to carry him back to the castle. Prince Jhon, shaken, retreated with them.
The dragon watched, then turned and vanished into the woods.
Back in the forest, Eyrix heard the roar and ran toward it. When he arrived, he saw the dragon Storm resting among the trees.
It was then he realized: the dragon training him and the dragon who had destroyed the farmlands were one and the same.
"You found me," the dragon said, his deep voice rumbling like thunder. "Well done. But this is only the beginning. The challenges will only grow harder."
"I'll do it," Eyrix replied without hesitation.
Then, overwhelmed by exhaustion from running all day, the young prince collapsed.