Long time ago, far away, in the mist-laden hills of the ancient kingdom of Hikarama, there was once a powerful Oni known as Okuramaru, or as the people called him, the
Demon Sentinel. This fearsome being, with crimson skin as bright as the sun at dusk and horns that curved like the crescent moon, was not just any ordinary Oni. He had been appointed by the royal family to serve as their eternal guardian after he once saved the kingdom from a marauding army of rival demons.
But unlike most stories of demons, Okuramaru was no villain. He was both feared and beloved by the people of Hikarama. Children whispered his name in awe, and villagers left offerings of sweet sake and rice cakes at the forest's edge, hoping for his protection. Yet, behind his towering figure and menacing appearance, Okuramaru was plagued by something no Oni could ever escape: boredom.

Emerging from the fog, this Demon Sentinel showcases his formidable fangs and spectacular horns, evoking a sense of dread and fascination as he navigates through the ethereal mist of the forest.
For 300 years, Okuramaru had kept the kingdom safe. Demons dared not cross his path, and rival human armies turned away the moment rumors spread of his presence. But even a demon can grow weary of the same old routine. He craved adventure, mischief, and something to break the monotony of his life as the eternal sentinel. Thus, Okuramaru developed a peculiar habit: prophecy.
Now, you might ask, how does a demon become a prophet? The answer, much like this tale, was both absurd and entirely accidental.
One evening, after polishing off a particularly strong barrel of sake, Okuramaru declared in a loud voice to the nearby trees, "I see the future!" Startled by his own proclamation, he found the entire forest strangely silent, as if even the birds were waiting to hear what absurdity would come next.
"The kingdom!" he roared. "The kingdom will face great peril unless... unless..." He paused dramatically, swaying a little. "The royal family does a ridiculous dance atop the Great Stone Tower! And they must do it... every year... on the first full moon of autumn, or else doom will befall them!"
It was, of course, a drunken joke. Okuramaru, though fierce and capable in battle, had the humor of a particularly mischievous raccoon. But what he didn't expect was that a passing royal messenger, who had been eavesdropping on his drunken declaration, rushed back to the palace and reported the Oni's "prophetic vision" to the king.
Naturally, the king took the words of his Demon Sentinel very seriously. After all, it was Okuramaru who had kept the kingdom safe for centuries. The royal family, despite their dignity, had no choice but to comply. And so, every year, on the first full moon of autumn, they climbed the Great Stone Tower in elaborate ceremonial robes and performed a rather ridiculous dance under the moonlight, to the bewilderment of the entire kingdom.
The spectacle became an annual event, drawing visitors from far and wide, all eager to watch the royal family hop, twirl, and flail in an undignified manner to appease the Demon Sentinel's mysterious "vision." To the people of Hikarama, this strange ritual was both revered and ridiculed. Over time, it became a source of amusement, with the villagers joining in with mock dances of their own, calling it the
Dance of the Moonlit Oni.
For decades, Okuramaru found the whole thing hilarious. He would watch from his perch in the mountains, roaring with laughter at the sight of the king, queen, and their courtiers making fools of themselves under the guise of preventing some vague, prophetic doom.

This magnificent Demon Sentinel, draped in a flowing robe, commands attention as he looms over a vibrant field, blending the ethereal with the earthly in a dance of strength and serenity.
However, what Okuramaru hadn't foreseen (because, let's face it, he wasn't actually a prophet) was that his little joke would eventually backfire in a way that would haunt him for the rest of eternity.
One year, when the king grew old and the queen even older, their son, the young Prince Yosuke, took the throne. Unlike his parents, who dutifully performed the ridiculous dance each year, Yosuke was not amused by this tradition. He had heard the whispers behind his back, the laughter of the villagers, and he was determined to put an end to the mockery.
"This Oni," Yosuke declared one evening in his court, "is making fools of us. I will not dance like a puppet to a demon's whims."
Against the protests of his advisors and family, Yosuke refused to perform the dance on the full moon of autumn. That night, as the moon shone bright and full in the sky, Okuramaru sat waiting for the spectacle. But as the hours passed and no royal family appeared on the tower, a terrible realization dawned upon him:
his own prophecy might actually come true.
In a drunken stupor years ago, Okuramaru had blurted out a vision, and now that it had been disobeyed, he feared the kingdom truly was in danger. Gripped by panic, the Oni scrambled from his lair and descended upon the palace, howling about doom and catastrophe.
The king, however, had grown tired of the Demon Sentinel's antics. "Okuramaru!" Yosuke shouted, standing before the gates of the palace. "Your so-called prophecy is a joke. You have no power over this kingdom anymore."
But as Yosuke spoke these words, a sudden flash of lightning split the sky, and the ground trembled beneath their feet. The people of Hikarama gasped in terror, believing the Oni's prophecy had finally come to pass.
Okuramaru, however, looked up at the sky, and instead of fear, his face twisted into a sly grin. For the truth, unknown to everyone else, was that
he had pulled a prank on himself. Years ago, during one particularly wild night of sake-induced revelry, he had made a deal with a mischievous thunder spirit named Raijiro. Raijiro had promised to stir up a storm on the night the prophecy was broken, simply for the sake of chaos.

With a fierce demeanor and an impressive skirt, this Demon Sentinel dominates the rugged rocks beneath his feet, instilling awe as he gazes defiantly at the tumultuous sky overhead.
Realizing his own prank was coming back to bite him, Okuramaru turned to the king and roared with laughter. "Oh, my dear prince, you've no idea how long I've waited for this! The storm, the earthquake, it's all part of my ultimate joke! I may have saved the kingdom for centuries, but today, I am saving myself - from boredom!"
The kingdom trembled as the storm raged on, but no great calamity befell Hikarama. Instead, Okuramaru vanished, leaving behind nothing but an echo of his laughter in the wind. Some say he wandered off in search of new mischief, while others believe he returned to the mountains to sleep off his centuries-old sake hangover.
As for the royal family, they never danced again - but every year on the full moon of autumn, the people of Hikarama still gather on the Great Stone Tower to perform the Dance of the Moonlit Oni, laughing at the sky and honoring the strange, ridiculous legend of their Demon Sentinel.
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