Xu Fu's body reacted instantly.
Her back arched slightly, her breath stopping for a moment before breaking apart.
The wave came quickly.
Too quickly.
As if everything she had been holding back until now collapsed at once.
The warmth she had been suppressing surged out, overwhelming her, spreading through the underground storage space.
"Ahh… ngg—!"
Her voice broke.
No longer something she could hold back.
Her body trembled—not gently anymore, but clearly, shaking in response to something spreading from within, expanding uncontrollably.
She tried to hold on—but failed.
Completely.
Her head fell onto Kuro's shoulder, her breathing uneven, her body going weak, though faint tremors still lingered, not yet fully fading.
"…you…" her voice was faint, barely audible. "…really…"
The sentence trailed off.
But it didn't need to be completed.
Because her body had already said everything.
And Kuro—only gave a faint smile.
As if he had already known the outcome from the very beginning.
"Alright… let's continue…"
Kuro stood up.
In a brief flash, his clothes vanished—drawn back into the surrounding space, as if they had only ever been a temporary layer that was never truly needed.
Without many words, he lifted Xu Fu's body.
Light.
As if he was already used to it.
Xu Fu only managed to take a breath—
"…wait—"
But the sentence was never finished.
Because the next moment—she had already "fallen" into a different kind of warmth.
Not suddenly.
But gradually.
Slipped in.
Allowed for her body to adjust… though it was clear, that boundary was never truly given a choice.
"Ah…!"
The girl's reaction was immediate.
Sharper than before.
Clearer.
As if her own body was startled by recognizing something that shouldn't have been touched… yet felt all too real.
Kuro didn't rush.
He paused for a moment.
Allowing Xu Fu to fully feel—the distance that was now gone, the space that was now filled, and the strange sensation that slowly transformed into something… hard to resist.
"…you're too tense," he murmured softly.
Then—he began to move.
Slowly.
Deeply.
Like the first wave that comes not to destroy—but to test how far the shore can hold.
But with every subsequent movement—it becomes clearer.
Deeper.
As if he were deliberately "knocking" on the same boundary, over and over, until the boundary itself forgets how to stay closed.
Xu Fu bit her lip.
Her breathing was ragged.
Her body tensed—then slowly… she gave in.
"Ahh… mm—"
The sound escaped her again.
Lower.
More honest.
As if she had stopped trying to hide it.
Kuro moved a little closer, holding Xu Fu's body so he wouldn't actually fall, keeping the rhythm steady—not too fast, but also leaving no room to calm down.
Every movement felt like a "opening" thrust, not roughly—but with an undeniable certainty.
Like a door that had been fragile from the start… just waiting for someone to push it a little further.
And Kuro—did it without hesitation.
Meanwhile, Xu Fu—slowly lost her bearings. The movement continued unhurriedly and slowed down.
As if Kuro were deliberately keeping Xu Fu right on the edge—the point where the body begins to lose control… but hasn't quite fallen yet.
Xu Fu's breaths grew shorter.
More irregular.
"...master—"
His name slipped out again, this time weaker.
Not a rebuke.
Not a protest either.
More like something that was too late to stop.
And Kuro knew.
He could feel it in every tiny tremor rippling through Xu Fu's body.
"It's close…" he murmured softly.
Then—he changed his rhythm.
Just a little.
But enough to make everything collapse.
"Ah—!"
Xu Fu's body immediately arched.
The tremor came without warning—spreading rapidly, like a current that had finally found an outlet after being held back for so long.
"Ahh… haa—ngg…!"
Her voice cracked.
It could no longer be hidden.
Her entire body trembled, caught between holding back and giving in.
And right at that moment—Kuro stopped.
For a split second.
Enough to make the sensation hang in the air… too intense to hold back.
Then he pushed deeper.
Deeper than before.
As if to ensure there was no distance left.
"...ah."
Her voice was low.
Calm.
And the warmth came.
Not just flowing—but overflowing, like a dam that finally cracked, then collapsed all at once, letting everything flow uncontrollably.
Filling.
Spreading.
Leaving not a single empty space.
Xu Fu's body reacted again.
Stronger than before.
The second tremor washed over the first—deeper, longer, as if her slender body itself could not distinguish where it began and where it ended.
"Ahh—!!"
Her breath was gone.
Her body went limp, yet continued to tremble, trapped amidst the lingering waves that refused to subside.
She no longer tried to hold back.
Nor did he try to understand.
All that remained was that sensation—too intense.
Too deep.
And Kuro—held him there for a moment.
Allowing that warmth to truly "settle," before slowly letting go.
Xu Fu swayed in his embrace.
Her breathing was ragged.
Her consciousness felt like it was being pulled up and down by the lingering, unfinished waves.
"...you..."
Her voice was barely audible.
"...really... too much..."
But that tone—wasn't entirely a protest.
More like an admission... that she didn't want to voice clearly.
***
An hour passed.
Time felt… irrelevant.
All that remained was rhythm.
And a body that had long since surrendered to it.
Their positions shifted—Xu Fu in front, pushing forward with what little strength he had left, while Kuro stayed behind, keeping the distance from closing… completely.
His movements didn't stop.
Nor did they slow down.
Like a current that had found its path—and chosen to keep flowing regardless of what lay in its way.
Xu Fu's breath was ragged.
Short.
Gasping.
No longer able to form a steady rhythm. Her eyes lost focus, slowly drifting upward without direction.
Her lips parted, letting out fragmented sounds without permission.
"Hngg… ahh… ahh…"
No words.
Only reactions.
Kuro smiled faintly.
"Your favorite position really is the best," he said casually, his tone light—a stark contrast to what was happening.
He drew closer.
His lips touched Xu Fu's ear again, his warm breath flowing gently.
"You agree, right?"
No answer.
Only increasingly chaotic gasps.
Xu Fu's body was already too far gone to choose.
Kuro shrugged slightly.
"Well…" he muttered, "…you're too busy to answer."
Then—he moved even closer.
His teeth touched Xu Fu's neck.
Not to hurt her, just enough to leave a mark that he'd been there.
And at the same time—the rhythm changed deeper, more certain. Like a final push that no longer held anything back.
"...ah."
Her voice was low.
Almost like a closing.
And the warmth came.
Not slowly—but overflowing.
Like something that had been held back from the start… finally released without a trace.
Flowing.
Filling.
But the space had been too full from the start, so some of it overflowed—leaving a warm trail that couldn't be hidden, like rain that the saturated ground could no longer absorb.
Xu Fu's body reacted once more.
Deeper.
Weaker.
Yet all the more distinct.
"Ahh…!"
That final tremor rippled through her body, then slowly faded… leaving her clinging only to the lingering sensations.
Kuro stopped.
But he did not immediately pull away.
He remained there for a moment—letting everything fully "finish" in his own way.
Meanwhile, Xu Fu was unsteady.
Her breathing was messy.
Her body trembled faintly, as if something had just crossed a boundary… and had not fully settled back yet.
No words.
No need for them.
Because everything… was already clear.
"Don't get ahead of yourself," Kuro whispered softly. "I'm not done yet."
His tone was calm.
Too calm… for something that was clearly not over.
Slowly, he withdrew.
Leaving behind a space that suddenly felt empty—and because of that, everything remaining within it began to spill out, unable to be contained. Like a vessel that had long been overfilled, finally losing its restraint.
Xu Fu trembled. Not from movement—but from the lingering sensation that had not yet had time to subside.
But Kuro did not give her any time.
His hand moved again, retrieving an artifact from the Gate of Babylon.
Without much pause, he set it in place once more.
And in the next second—the tremor returned.
"Ah—!"
Xu Fu's legs immediately tensed, nearly losing their support.
The tremor was not intense.
Not rough.
But precisely because of its consistency… it gave no room for her to adapt.
"Ohh… haah… haaa…"
Her breath hitched, the sounds slipping out without time to be restrained—forced out by something too steady to resist.
Kuro let out a quiet chuckle behind her.
"A wonderful sensation, isn't it?" he murmured casually.
But before Xu Fu's body could adjust—Kuro moved closer again.
The warmth returned.
But this time—the direction was different.
"Higya—!"
Xu Fu's body tensed sharply, almost jolting from her place.
Her reaction was far more pronounced.
More honest.
As if her own body was surprised by boundaries being pushed again without warning.
"Be patient," Kuro said calmly. "The interesting part is just beginning."
And indeed—moments later, he moved.
His rhythm was firm.
No longer experimentation.
But consistent pressure, striking the same point repeatedly—while the artifact continued to pulse, creating two opposing currents of sensation colliding with each other.
The result—chaotic.
"Hngg—ahh… ahh…!"
Xu Fu's voice broke like heavy rain, no longer something that could be contained.
Her body trembled without pattern, her breathing completely shattered.
There was no coordination left.
Only reaction.
Kuro maintained it.
Not speeding up.
Not slowing down.
Only ensuring Xu Fu remained right at that threshold—too full to endure, but not yet given permission to fall.
Then—he stopped.
Suddenly.
But he did not withdraw.
On the contrary.
He pressed deeper—holding that position, making all sensation hang at its most concentrated point.
"...ah."
His voice was low.
And the warmth returned.
Flowing.
Stronger than before.
As if something that had no longer been restrained was now seeking space in a place that had long lost its capacity to hold it.
Xu Fu reacted immediately.
Stronger.
Deeper.
As if her body could no longer distinguish between the peak… and what remained afterward.
"Ahh—!!"
The tremor broke again.
Longer.
Wilder.
Then slowly… it weakened.
Leaving behind a body still trembling faintly, a breath that never fully recovered, and a consciousness still caught between the remnants of the waves.
Kuro remained silent behind her for a moment.
Taking in the result.
As if he had already known—Xu Fu would never truly be able to hold it back.
____
Author's note:
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