"A single flame may be snuffed, but the poison it leaves will linger in the shadows forever."
— Letter from Hotaru no Yakusha
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The night breathed cold, pressing in like the weight of a thousand forgotten sins.
Kamakura's streets, once alive with whispered prayers and drunken laughter, were now choked by silence thick enough to drown a man's soul.
Shindō Motsura sat cross-legged on a broken stone beneath a gnarled cherry tree.
His eyes — dark wells of shadow — stared at the letter before him.
The black wax seal had cracked, like a wound barely healed, and inside lay a single phrase, written in ink so dark it seemed to drink the light:
"To burn the world, one must first learn to bleed for it."
Blood. Pain. Sacrifice.
These were not words to a man who had long since buried his humanity beneath corpses and ash.
Yet, as the moon hung low, casting a sickly glow on his hands, Shindō felt something stir.
Not hope. Not peace.
Something far more dangerous: a thread pulling him toward a destiny darker than the night itself.
---
From the shadows, footsteps approached.
Soft. Deliberate. The kind of steps that know every crack in the earth.
A girl emerged — no more than thirteen — her face pale as moonlight, eyes blind yet glowing with an eerie calm.
She moved like a ghost, silent and sure.
"Shindō," she said, voice barely a whisper, "the firefly waits for no one."
Shindō's fingers tightened around the letter.
He had never met her before.
And yet, in her presence, the cold inside him trembled.
---
"You seek purpose," the girl continued.
"But purpose is a blade with two edges. One that cuts flesh… and one that cuts the soul."
She knelt beside him, placing a small jar in his hands.
Inside, a single firefly flickered — blue as the lantern's flame he had seen once before.
"Keep it close," she said. "It will light your way… or burn your heart."
---
Before Shindō could respond, a scream shattered the night — raw, desperate, filled with agony.
The girl's eyes flared with sudden pain.
"Too late," she whispered.
"Already the shadows have moved."
---
Shindō rose, nodachi drawn like a sliver of moonlight slicing the dark.
Tonight, the game had begun.
And there would be no turning back.