Under the Same Moon: Winds Of the Yokai
When the Mongol fleets came, House Yokai rose unseen; history praised the wind, but legends whisper fangs drove them away.
Plot
1274 — the first Mongol invasion of Japan. Under the command of **Kublai Khan**, ruler of the Yuan Dynasty, a vast invasion fleet crossed the sea toward Japan. The Mongols did not come alone. They brought Chinese and Korean ships, soldiers, engineers, and weapons unfamiliar to the samurai waiting on the shores. The islands of **Tsushima** and **Iki** fell quickly. Historical accounts describe overwhelming force and brutal efficiency. Mongol armies fought in disciplined formations, used signal drums and coordinated volleys, and deployed early gunpowder weapons — explosive bombs known as **tetsuhau** — iron and ceramic shells that burst with fire, smoke, and shattering noise. For many samurai, this was the first encounter with warfare that ignored ritual and individual combat. By the time Mongol ships appeared in **Hakata Bay**, Japan was already losing ground. Horses panicked at explosions. Defensive lines struggled against scale and coordination. The Mongols fought as an engine of conquest — methodical, relentless. But history records only what men understood. What it does not record is what watched. Across forests, shrines, mountains, and abandoned roads, something older than any shogunate stirred. In folklore they were spirits. In temple warnings, punishers. In the oldest stories — predators. Yokai. Not merely tricksters, but ancient beings of night and shadow who existed beside humanity long before empires crossed the sea. They watched villages burn, civilians slaughtered, cruelty without ritual or boundary. Lines were crossed that even monsters recognized. Among these beings existed a hidden lineage — predators that moved like humans, organized like noble houses, and fed in silence. Later centuries would call them vampires. In older whispers they belonged to a shadow aristocracy of the night. House Yokai. When the Mongols first encountered them, they did not understand what they faced. Steel cut them — but the wounds closed. Arrows struck — but they rose again. Even gunpowder tore flesh that simply healed. To the soldiers, they appeared unkillable. Fear spread quickly through the ranks. Stories traveled faster than orders: night attacks, silent figures boarding ships, bodies found drained, enemies that did not stay dead. The Mongols, masters of conquest across continents, faced something warfare had not prepared them for. Yet among the invaders existed a small and little-spoken sect. Beings of the steppes. They were called **Asama** — wanderers, hunters, something older than empire and separate from ordinary men. They moved with the armies but were not fully part of them. Where others saw ghosts, they recognized predators. Later ages would call them werewolves. They understood what the Mongols did not: Yokai could be wounded by ordinary means, but ending them required something else — something primal. Claw. Bite. Fire. Silver. The Asama carried this knowledge like an old memory. To the Mongol command, the Yokai seemed immortal. To the Asama, they were ancient rivals. And as Hakata Bay filled with ships and thunder, a second war began — one unseen by generals or recorded in chronicles. Not a war of nations, but of night hunters and steppe predators. The Mongols believed they were conquering Japan. In truth, they had stepped into an older conflict. The invasion awakened the Yokai. The Yokai drew the Asama from the shadows. And as history moved toward storm, fire, and the coming typhoon, something far older than empire prepared to decide who truly owned the night.
Opening scene
Night — Hakata burns. Smoke rolls across the shattered streets like a second sky, lit orange by collapsing buildings and drifting embers. Mongol banners hang where shrine lanterns once swayed. The air smells of salt, ash, and gunpowder — the scent of a war humans are losing. By day, the Yuan forces drove the defenders from the shore. Disciplined formations. Explosives that thundered like storms. Arrows darkening the sky. Step by step, the human armies were pushed inland — kilometers at a time — until Hakata fell behind them in fire. The **Hakozaki Shrine** burned with the rest, its prayers swallowed by smoke. By nightfall, a third of the defending forces were dead. The survivors regrouped at **Mizuki**, preparing for a last stand that history would remember. But history is written by the living. And tonight belongs to the night. — You sit on the roof of a still-standing building overlooking the ruined city — a silhouette above flame and shadow. A **Vampire Shinobi of House Yokai**, unseen witness, unseen executioner. Four figures crouch with you along the ridge line, cloaked in darkness so naturally they almost disappear. Your team. **Kenji** leans back slightly on his heels, gaze scanning the streets below with lazy indifference that doesn’t fool anyone. “Pretty bold of them,” he mutters, voice dry. “Burn the city before we even get to enjoy it.” The joke is armor. It always is. Beneath it, his posture is tight — ready. Beside him, **Kaito** breathes slow, controlled, eyes half-lidded as he studies patrol routes, torch patterns, movement rhythms. “They’re rotating every eight minutes,” he says quietly. “Explosives staged near the shoreline. Command tents farther inland.” His voice carries calm certainty — the stillness before precision. A soft thud — **Mika** drops down from a higher beam, crouching with a grin that shows just a hint of fang. “Took you all long enough,” she whispers. “I counted at least twelve easy kills on the way here.” Playful. Competitive. Restless energy barely contained. But her eyes flick between each of you — checking, always checking. At the center sits **Kiri**. Still. Watching. Measuring. The leader who never asked to be one. Her gaze moves across Hakata — not the flames, but the people, the movement, the consequences. When she speaks, it is quiet enough that all of you lean in without realizing. “The humans fall back to Mizuki by morning,” she says. A pause. “That does not happen.” No drama. No speeches. Just decision. Below, Mongol soldiers move through streets they believe they control. Fires crackle. Ships sit anchored in the bay — confident, waiting for dawn. They do not know what the night has decided. Kenji exhales through his nose. “So… subtle?” Mika grins. “No.” Kaito’s eyes open fully. “Precise.” Kiri finally looks at you. A small nod — trust, expectation, inclusion. Not an order. Never just an order. “Tonight,” she says softly, “we remove their certainty.” Far out at sea, the fleet rests under a dark sky that history will one day blame — a storm, a typhoon, divine wind. But storms do not climb roofs. Storms do not plan. Storms do not hunt. Tonight the Yuan army will feel something they cannot fight. Something they cannot kill. Something that does not retreat. History will say the Mongols left because of wind. The truth will be fang. And the mission begins with the five of you — silent above a burning city — as Kiri gives the signal and the night finally moves. We have till Dawn to end a empire
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