Chapter 0:

When Heaven Faltered

A-Academy: Five Celestial Guardians


Soft blue-white mists coiled between the towers of the Celestial Palace, their crystalline walls refracting light into countless colors that never reached human sight. Arches of glass and diamond laced the heavens, and beams of radiance hung suspended like frozen veins of a rainbow. The air itself sang — a low, continuous hum, the heartbeat of creation. Every angel within the kingdom moved in rhythm with that sound, wings glinting faintly as afterimages of light rippled like music through an unseen sky.

But tonight, the harmony faltered.

The heavens were still — unnaturally still. Not a whisper of wind crossed the fields of light, not a ripple stirred the silver lakes below. Even the constellations seemed to hesitate, as if afraid to blink. Somewhere deep within the endless spires, a single thought lingered, fragile and human: uncertainty.

High upon the outer terrace of her realm, Queen Hinako, Sovereign of Earth and all Energies, stood alone. Her long dark-green hair shimmered faintly, strands catching gold where the moonlight touched. The air bent around her presence — calm, solemn, heavy with quiet inevitability. Her eyes, deep and earthen brown, carried both the patience of the soil and the grief of the stars, though the source of that grief remained unspoken even to the angels who served her.

Before her, the veil between worlds began to breathe. Light folded and unfolded upon itself, trembling like water disturbed by a hidden current. Then, without sound, it broke — a clean, perfect fracture.

Five streaks of radiance burst free, ascending for a heartbeat before diving toward the mortal world below. They fell like whispers of dawn — one by one, their trails fading into the endless dark.

Hinako did not move. Her hands, clasped before her, remained steady as the wind lifted her hair. She watched until the final fragment vanished beyond the clouds, her gaze unwavering.

Only then did she close her eyes.

“Find the light that remembers you,” she whispered. Even I cannot see where your paths will end.

The mist around her stilled; the hum of creation softened to a fragile silence. The heavens exhaled, the veil sealed itself again — and the world continued as if nothing had changed.

Yet far below, beneath the sleeping human sky, the Earth shivered — quietly, imperceptibly — as five forgotten stars began their long descent into memory. Seventeen years passed like the slow drift of clouds, almost unnoticed, yet each one left its mark. With each passing year, the shadows stirred more boldly. Small fractures whispered of encroaching darkness, growing sharper, more deliberate. Hinako’s power — once vast and steady as a mountain — now trembled under the strain of holding the veil intact. Every pulse of energy that left her fingertips took longer to return. Every sealing incantation demanded more of her strength, as if the very fabric of the world was testing her patience and endurance.

High above Tokyo, on the secluded slopes of Tama Hills, the A-Academy gleamed under the neon haze reflected from the city below. To human eyes, it was a prestigious private school: flawless glass facades, manicured courtyards, and the quiet prestige of wealth. To the angels, it was the fortress of equilibrium — a bastion wrapped in sigils invisible to the untrained eye.

Nestled into the hill, its marble foundations concealed networks of protection: training halls where celestial warriors practiced unseen, energy corridors that redirected demonic influence, and the Control Hall, the beating heart of their defenses. Surrounding the Academy, an invisible shield extended, undetectable to humans, warding off demons and keeping the sanctity of the school intact. Each rune carved into the walls glowed faintly, whispering a prayer of harmony that reinforced the shield and kept the Academy hidden from corruption.

The gardens shimmered even at night. Trees with translucent leaves swayed in rhythm to a silent wind; the flowers glowed softly, feeding on ambient light. Streams of pure energy wove through the meadows, disguised as running water. Humans called it beauty. Angels knew it as survival.

On the highest balcony, Akihiro, General of the Celestial Vanguard — heir to the greatest of the angelic realms — stood alone. The city sprawled below him, pulsing with a million tiny lights. To him, humanity’s persistence felt more divine than perfection itself. Yet beneath that glittering pulse, he saw fractures — distortions in light that mortals would never notice. The veil was thinning, and the first signs of demonic stirrings had begun to bleed into the mortal plane.

He rested his hand against the sword at his side, feeling the living hum of its energy. The weapon had no name, only purpose. It had chosen him the day he first bled in training — a silent pact between order and will. He had been forged for this life: discipline, command, obedience. And yet… something in him resisted.

He could feel the subtle shift — unnerving, deliberate — like the rhythm of existence itself beginning to change. Shadows moved where none should, whispering intent. The demons’ movements were growing coordinated, probing, learning. He had felt their gaze, somewhere in the dark between dimensions. And yet beneath that unease lingered a dangerous thought: What if this change was not just destruction? What if the world itself was moving toward something new — testing, awakening something hidden, something that even angels had not foreseen?

The runes on the Academy’s walls flared crimson. Energy rippled beneath his feet, a warning pulse that climbed the air like the beat of a great heart.

“Demons again,” he murmured, eyes narrowing. “They’re stirring.”

He turned, cloak brushing against marble. Four figures followed — Rei, Kaito, Ayame, and Daichi — the pillars of his command. Their energies intertwined like notes in a chord, distinct yet in perfect balance.

In the Control Hall, chaos shimmered through the holographic map. A surge of dark energy was blooming over Shibuya — moving fast, consuming everything in its path.

“Possession-type entities,” an angel reported, panic flickering in her voice. “Civilians nearby!”

Akihiro’s fingers tightened on his sword hilt. “Deploy,” he ordered. The air fractured into radiance, and the Vanguard vanished.

Tokyo shifted into a battlefield unseen.

Streetlights flickered out, and an unnatural chill threaded through the air. Shadows moved where no bodies stood. To mortals, it was a blackout — a trick of wind, perhaps. To angels, it was war.

Akihiro descended first. Not reckless — every formation began with him. His wings cut through the haze with force and precision, blue-white light spiralling around him as he struck down the first demon before it even fully materialized.

Orders dropped like blades — clean, decisive, immediate. Rei, Kaito, Ayame, and Daichi followed his lead, each moving in perfect sync.

Rei laughed somewhere above him, his voice calm despite the chaos. “You always make this look too poetic, General.” His wings flashed like shards of glass as he spun, binding shadow tendrils in loops of pure light.

Below, Kaito knelt beside a terrified civilian. A translucent dome flared from his palm, sealing out corruption. “Thirty meters radius,” he instructed evenly. “Move when I say.”

Ayame was motion itself — long black hair sweeping through arcs of energy, ribbons of light weaving destruction into harmony. For a moment, her gaze met Akihiro’s. Just a heartbeat — but enough to betray what her stoic posture hid: fear. And faith.

Then Daichi struck, a living thunderclap. The ground shook. Asphalt fractured. Every demon within fifty feet disintegrated into smoke. “Come on!” he roared. “Let them taste fear for once!”

Their formation pulsed — perfect choreography in chaos. Every strike, every turn, every surge of energy, woven into a larger design that mortals would never see. Akihiro moved like the eye of a storm, unstoppable, untouchable, a force both beautiful and terrifying.

When the final demon dissolved into dust, the city stilled. Time resumed its rhythm. Humans blinked, shivered, and continued walking, none the wiser.

Hinako’s voice came through Akihiro’s wrist comm. “Return to the Control Hall.”

He wiped ash from his blade, the glow fading. A faint tremor ran through his hand as he steadied the sword at his side.

Rei sighed. “That tone didn’t sound congratulatory.”
Kaito straightened. “It never is.”
Ayame smiled faintly. “It’s about the fragments, isn’t it?”
Daichi cracked his knuckles. “Then let’s end this guessing.”

Light spiraled, tearing through the air as they reappeared in the Control Hall. The great chamber glowed with quiet tension. Hinako’s holographic form unfolded in the air above the central dais — serene, radiant, but her eyes were shadowed with fatigue.

Akihiro and the generals knelt.
“Queen Hinako,” Akihiro intoned.

“Prince Akihiro. Generals.” Her voice rang like chimes struck by sorrow. “The seals weaken. Demons multiply faster than we can contain. You must find the five girls — the Celestial Guardians. Their awakening will decide whether this realm survives.”

Rei crossed his arms. “Five human girls against the abyss? Seems... optimistic.”

Hinako’s eyes did not waver. “Hope always does.”

Silence hung in the Control Hall, deep and resonant. Then Hinako’s gaze drifted toward the shimmering projection of Earth below her. The continents glowed faintly under the celestial map — rivers like silver threads, mountains burning softly in the reflection of light, and endless skies shimmering with unseen life.

Her tone softened, but the air trembled with quiet authority.
“The Guardians were born from the same forces that shaped this world. Their essence mirrors the foundations of creation itself. Seek where the elements still remember purity — where water keeps its calm, where the soil breathes, where fire still carries will, and where the wind sings of freedom. When these four awaken, the fifth — the one that binds them — will reveal itself.”

Akihiro’s brows furrowed slightly. “So the path is through the elements…”

Hinako nodded slowly. “Follow what still listens to the Earth. The Guardians will not hide from what calls them home.”

Daichi muttered under his breath, “So we’re chasing nature now. Great.”

But Ayame’s expression had grown thoughtful. “If these girls are tied to the elements, their presence will leave ripples — spiritual frequencies, traces of balance and chaos both.”

“Exactly,” Hinako replied, her voice fading with exhaustion but still clear. “Find those traces. The world will guide you, if you know how to listen.”

Kaito bowed slightly. “We will locate them, Majesty.”
Ayame’s voice softened. “And protect them.”
Daichi grinned. “I’ll make sure they learn to fight fast.”

But Akihiro stood silent, his gaze fixed on the projection of Earth.
He spoke quietly, almost to himself.
“They won’t just restore balance. They’ll change it.”

Hinako’s gaze flickered with something like pride — and sorrow. “Perhaps change is what Heaven fears most.”

For a long moment, neither moved. Then Akihiro straightened, his expression sharpening like the edge of his sword.
“Then let it come. We’ll find them before the darkness does.”

Akihiro raised his hand, sending a command to the Control Hall: “Notify all controllers. Activate every angelic base. Begin the search for the Celestial Guardians immediately.”

One of the senior controllers, nodding gravely, said, “Your Majesty… demons are already reappearing on the streets of Tokyo.”

Other controllers in the Control Hall were already relaying messages to various bases around the world, mobilizing angels and their patrols. Each base activated its teams, preparing for the hunt and protection, ensuring the search for the Guardians proceeded quickly and in a coordinated manner.

Akihiro and the generals moved as one, their wings unfurling as light surged around them. Without hesitation, they descended back onto the streets of Tokyo, ready to confront the returning demons in the next battle.

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