"...Let's see… how long until one of you mistakes the other?" Tsukikage said softly.
A faint laugh escaped him.
Then his form flickered.
Not like a person moving.
Not like something vanishing.
But as though the darkness itself had momentarily taken the shape of a man... before remembering it was never human to begin with.
The shadows around the branches twisted upward, swallowing his figure whole.
And he disappeared once more.
Below, Kagerou and Kanae remained motionless.
The situation surrounding them had already become troublesome.
At first, the shadows merely copied their appearances.
A second Kanae standing between the trees.
Another Kagerou leaning lazily against a trunk.
Distorted imitations meant to provoke hesitation.
But that alone was not enough.
Not for them.
Even if their eyes were deceived for a moment, they could still distinguish the real from the false.
The differences were subtle.
Too subtle for ordinary people to notice.
But for Demon Slayers who had sharpened every sense through training and battle… It was enough.
A fake voice lacked the proper rhythm of breathing.
A fake body carried no warmth.
A fake presence moved half a second too late… or too smoothly.
Even scent betrayed the shadows eventually.
Kagerou could still recognize the faint fragrance of the wisteria surrounding Kanae.
And Kanae could still hear the calm steadiness hidden beneath Kagerou's breathing, even when the forest itself tried to drown it out.
Their senses compensated for one another.
When sight became uncertain, hearing remained.
When hearing became distorted, scent remained.
And because of that… The shadows failed.
For a brief moment, the forest fell still again. Then the darkness shifted.
Not violently.
Quietly.
Like something learning.
Adapting.
That was what made the shadows terrifying.
They did not simply deceive.
They observed.
They evolved.
And somewhere deep within the forest... Tsukikage smiled.
Because he had already realized something important.
Distorting their senses alone would never be enough to break them.
So the shadows reached for something deeper.
Something far more dangerous.
Memories.
The darkness around the trees began to ripple unnaturally.
And then...
"Kage-nii!"
A bright voice echoed through the forest.
Kagerou's eyes widened slightly.
Kyojuro.
Not beside him.
Not behind him.
Ahead.
A child's figure stood faintly between the trees, illuminated by fractured moonlight.
Smiling.
"Look what I learned!"
The image flickered.
Changed.
Blood.
The smile vanished.
Torn clothes.
Burned flesh.
Kyojuro's body collapsed soundlessly into darkness.
Kagerou's grip tightened instantly around his blade.
"...Tch"
Beside him, Kanae's breathing faltered for the first time.
Because now...
"Nee-san…"
A small voice whispered softly.
Shinobu.
Standing alone beneath the trees.
Eyes trembling.
Covered in blood.
"Why weren't you there?"
Kanae froze.
The shadows did not stop.
One memory bled into another.
Twisting.
Changing.
Reconstructing fragments of fear, regret, and guilt into living nightmares.
Not illusions born from imagination.
But pieces of truth corrupted into something monstrous.
And that was what made it dangerous.
Because unlike false images… Memories already lived inside them.
The forest only forced them to relive what they wished to bury.
Kagerou's eyes narrowed sharply.
"...Don't listen to it," he said immediately.
But even his own voice sounded less certain now.
Because the shadows had finally found the one place even trained senses could not easily protect.
The heart.
Then the forest struck deeper.
"...Kage-kun"
The moment that voice reached him, Kagerou froze.
Not from fear.
Not from confusion.
Something far worse.
His breathing lost rhythm instantly.
One breath too shallow.
The next too sharp.
His fingers stiffened around the hilt of his ninjato as his body slowly turned toward the source of the voice.
And there... She stood beneath the trees.
Ruka Rengoku.
Alive.
Moonlight filtered gently through the branches above, falling across her figure in soft fragments of silver. Her long hair swayed lightly with the wind, and that familiar smile rested upon her face.
Warm.
Gentle.
The same smile that had once made the entire Rengoku household feel like home.
Kagerou's eyes widened slightly.
Because it wasn't merely her appearance.
It was everything.
The way she stood.
The softness in her gaze.
The quiet warmth behind her eyes whenever she looked at him.
No shadow should have been able to replicate that.
And yet…
"...You've grown, my son," Ruka said softly.
Her voice carried through the darkness with unbearable tenderness.
She slowly opened her arms toward him.
"Come here," she whispered gently. "Let me take a closer look at you"
"..."
Kagerou said nothing.
Could say nothing.
Somewhere deep inside him, memories he had buried long ago began clawing their way back to the surface.
Warm mornings.
Gentle hands brushing through his hair.
A soft voice praising him after training.
A fragile body smiling despite pain.
The smell of medicine lingering faintly in her room.
And then... Silence.
Loss.
His chest tightened violently.
Too beautiful to forget.
Too painful to remember.
A wound that had never truly healed.
Beside him, Kanae noticed it immediately.
The change in his breathing.
The way his stance had loosened.
The hesitation.
Her eyes widened slightly.
"Rengoku-san!" she shouted sharply, cutting through the forest. "Don't listen to it! It's an illusion!"
At the same time, shadows burst from between the trees, lunging toward her as though they had realized one of them had fallen.
Kanae swung instantly.
*Slash!*
Her blade tore through distorted figures rushing from the darkness, scattering them into smoke-like fragments.
But her attention kept shifting back toward Kagerou.
Because he wasn't moving.
"...Rengoku-san!"
No response.
Her voice never reached him.
Not anymore.
At this moment, nothing could.
Not while he was drowning inside memories he had spent years trying to suppress.
The forest around him began to fade.
All of it grew distant.
And standing at the center of that fading world… Was his mother.
Smiling at him as though nothing had ever changed.
As though she had never died at all.
"...Mother..."
The word left Kagerou's lips almost soundlessly.
Short.
Fragile.
And filled with emotions he had buried so deeply that even he had forgotten how much they still hurt.
His vision blurred.
Not from the darkness.
But from tears slowly gathering in his eyes, trembling at the edge of falling.
And before he realized it... The forest disappeared.
The cold.
The shadows.
The suffocating silence.
All of it faded away like mist beneath sunlight.
What replaced it instead… was warmth.
A warm morning beneath the shade of a great tree.
The soft rustling of leaves overhead.
Golden sunlight filtering gently through the branches, scattering across the grass in shifting patterns of light.
A younger Kagerou lay quietly with his head resting on Ruka's lap.
Small.
Safe.
Her fingers moved gently through his hair, slow and tender, carrying the same warmth he remembered even after all these years.
Beside them, infant Senjuro slept peacefully beneath the shade, wrapped carefully in cloth, his tiny breaths soft and steady.
And not far away.
*Plak!*
Wood struck wood.
Shinjuro stood in the open yard with a wooden sword in hand while young Kyojuro rushed toward him with endless energy, laughing brightly despite being knocked back again and again.
"Again, Father!"
"Hah! Then stand up properly first!"
Their voices carried through the warm air.
Alive.
Whole.
Complete.
Everything was there.
The warmth of family.
The sound of laughter.
The quiet peace of ordinary days.
A world untouched by grief.
Untouched by death.
The gentle wind brushed against Kagerou's skin.
Warm sunlight rested across his face.
And for one fleeting moment… He forgot pain existed at all.
"...You've been working too hard lately, Kage-kun," Ruka said softly above him.
Her hand continued stroking his hair.
The same way she always used to.
"You should rest more"
Kagerou's throat tightened painfully.
Because this memory…
No.
This dream was too perfect.
Too gentle.
Too beautiful.
And because of that… It hurt more than any nightmare ever could.
Somewhere deep inside himself, Kagerou understood the truth.
He knew this wasn't real.
He knew his mother was gone.
He knew this warmth had already been taken from him long ago.
But his heart... His exhausted, wounded heart... Wanted to stay anyway.
Just for a little longer.
Just one more moment beneath this tree.
One more moment hearing her voice.
One more moment pretending nothing had ever been lost.
And slowly… His grip around his blade weakened.
---
#A/N: "..."