The Enchanted Tale of the Unknown Hero

Once upon a time, in a realm far beyond human reach, an unknown hero embarked on a noble quest. The realm, known as Eldoria, was a land characterized by enchanting beauty and magical diversity simmering with ancient wisdom and mystic charm. The story I'm about to narrate is one that has never before been heard in your part of the vast universe.
Our hero was an enigmatic figure, a human, stranded in Eldoria due to an anomaly in the cosmic rhythm. The locals labeled him 'Arkaan', meaning 'mysterious'. Eldorians were a peaceful and amiable species blessed with the gift of prophecy. Amidst this tranquility, there arose a problem. The sacred Centauri tree had started wilting. Eldorians drew their strength and wisdom from this tree. It was prophesied that the tree would cease to exist unless its dying heart was replaced with the 'Heartstone', a mystical gem found in the heart of the treacherous catacombs known as the 'Abyss of Shadows'.
Arkaan's heart burned with courage and compassion for his adopted homeland. He resolved to find the Heartstone and save the Centauri. Armed with only his wit, a map leading to the Abyss, and a golden sword bearing the crest of Eldoria, Arkaan set sail for his dangerous quest, departing amidst tearful goodbyes and prayers.
The journey to the Abyss of Shadows was fraught with peril. Arkaan battled savage beasts and endured treacherous terrains. Through these trials and tribulations, he never lost his fortitude and stayed true to his mission. The Abyss was a labyrinth, its darkness impenetrable, its echoes spun from nightmares. Battling the mind-numbing fear, Arkaan pressed forward, guided only by the tiny illumination from his sword and his undying determination.
After what seemed like an eternity, Arkaan reached the heart of the Abyss. He could see the Heartstone's radiant glow piercing through the darkness. His joy was cut short as he felt a monstrous presence nearby. An ancient guardian, a massive creature composed of shadows with ember eyes, blocked his path. Arkaan, utilizing every ounce of strength and strategy, managed to trap the creature in a pillar of light generated by his golden sword, snatched the Heartstone, and raced towards the exit of the Abyss.
With the Heartstone in his possession, Arkaan was imbued with newfound energy and swiftly made his way back to Eldoria. The Eldorians celebrated their savior's return but the task was not finished. The Heartstone was to be infused into the Centauri tree by the one who procured it. Arkaan stepped forward, placing the Heartstone in the realm's sacred vessel, reviving the Centauri tree.
As the Heartstone fused with the tree, the Centauri began to radiate with an ethereal light, illuminating Eldoria's sky, casting away the looming dread. Arkaan fell, exhausted but fulfilled, as the Eldorians rushed to his aid. As a token of their gratitude, they imbued Arkaan with a part of the Centauri tree, thus welcoming him into the Eldorian race.
Arkaan's journey from an unknown protégé to Eldoria's savior was narrated across generations. His tale became an emblem of courage and devotion. A living proof that a hero is not defined by its birth but by its deeds. Yes, this is the story of Arkaan, an unknown hero lost in words in Eldoria's mystical scrolls.