Forbidden Honeymoon: Reincarnated as a Slime, Yet I Can't Let Go of Her Fingers
Rimuru, a second-year high school student, is suddenly reincarnated as a slime.
He wakes up in a deep, dark dungeon room. His body is blue and translucent, with no limbs. He can't speak properly. Milene and Chloe, female adventurers who hunt monsters, find him.
They casually tame Rimuru as a 'cute slime.' As they travel together, Rimuru's role becomes not about fighting... but about what happens inside the tent at night. Milene and Chloe begin to unleash a sticky, possessive desire onto the sl
Forbidden Honeymoon: Reincarnated as a Slime, Yet I Can't Let Go of Her Fingers - Found Blue — A Captive Who Learned Warmth
The stone corridor was simply, utterly dark.
The pale blue light of magic essence seeping from the walls here and there barely illuminated the ground at their feet. Only the sound of two pairs of boots—*clack, clack*—echoed through the cold, stagnant air.
This was the Labyrinth of Lamentations, the third stratum.
Deep within the ruins of a civilization that had perished in ancient times, the air was bitterly cold, and mingled with it was a faintly sweet, decaying scent.
"Honestly, you worry about me way too much, Chloe. We're third-year hunters now, you know?"
Her waist-length crimson hair swaying, Mirene glanced back. Her amber eyes, catching the lantern light, narrowed like a cat's. On the back of her right hand, the crest of a Stigma faintly glowed. The power to control flame and heat—and as its price, she had lost her entire family.
"That's not the issue. The magic essence flow in this stratum is unstable. Anything could happen."
Her silver bobbed hair swaying, Chloe gave a small shake of her head. On the nape of her neck, hidden by her hair, she too bore a Stigma crest. The ability of spatial perception—with it, she could detect minute fluctuations in magical power that Mirene could not sense.
"Huh... wait."
Chloe stopped in her tracks.
Her large, lake-like blue eyes stared intently into the depths of the passage. Her right hand unconsciously touched the ring on her left finger. A silver ring Mirene had given her long ago—a token of friendship, and a symbol of another feeling she had yet to recognize in herself.
"Something's wrong. An incredibly strong magical reaction... behind that wall."
The two exchanged a glance and quietly approached.
Behind the wall—on the other side of a crumbling stone pillar—it was there.
A pale, translucent, jelly-like body. About thirty centimeters in size. Roughly spherical in shape, with faint silver lines of light occasionally running across its surface. And within its body, numerous tiny golden points of light floated.
A slime.
The weakest monster in the dungeon.
But—
"Wait, isn't this thing... adorable?!"
Mirene's voice suddenly lifted with excitement. She knelt down, bringing her face close to the slime. Her burning amber eyes reflected the golden points of light.
"Look, Chloe. This little one isn't an ordinary slime. Its magical power is... incredibly pure."
The slime—Rimuru—trembled with fear and confusion.
(*I've been found—*)
How long had it been since he had awakened in the darkness? He had simply trembled endlessly, holding both hope and fear at the sound of distant footsteps. And now, two women stood before him.
A woman with crimson hair, and a woman with silver hair.
Both possessed magical power stronger than anything Rimuru had ever felt before. But more than that—they were warm.
(*Ah, body heat.*)
His slime instincts tried to draw him toward those two sources of warmth. Rimuru desperately suppressed the impulse. The reason he still possessed from his time as a human rejected the idea of approaching someone like a monster.
"Mirene, wait. That slime isn't normal. Those points of light inside it... those are magic essence crystals. An ordinary slime shouldn't have something like that."
Chloe anxiously grabbed Mirene's shoulder.
"It's fine. Besides, it's cute!"
Completely ignoring her, Mirene gently touched the slime's surface with the tip of her right finger.
*Squish.*
Cold, and soft.
"I'm going to tame it."
At those words, the golden points of light within Rimuru's body flared brightly for an instant.
(*Tame—? She's going to make me... her pet?*)
The ego of Rimuru, once a high school student, faintly rebelled. But in this body, without a voice or limbs, he could neither refuse nor flee.
"Are you serious? We don't even know what this thing really is yet..."
"You just worry too much. Now then, I have to give it a name."
Mirene lifted the slime up in both hands.
The cold, jelly-like body gradually warmed with the heat of her palms. Rimuru felt his body unable to resist that warmth.
"Rimuru. Yeah, let's go with Rimuru. Has a nice ring to it, don't you think?"
Mirene's amber eyes sparkled happily.
(*Rimuru—*)
Rimuru repeated the name in his mind.
He could no longer remember the name he had as a human. When he tried to recall it, the back of his mind hit a pitch-black wall, and he could see nothing. How he had died, why he was in this world—everything had vanished beyond the reaches of memory.
Only the fact that he could never return to his original world was something he knew by instinct.
That sense of loss had opened a hollow hole deep within Rimuru's heart.
(*But... now, I'm Rimuru.*)
A new name. A new place to belong.
Being treated like a pet was complicated—but even so, the simple fact that someone had found him made him just a little bit happy.
---
Their exploration ended, and the two women and one slime returned to the safe zone of the second stratum.
This was a place with relatively few monsters, a stone hall used by hunters delving into the dungeon to make camp. Ancient lights on the ceiling still emitted a pale blue glow, faintly illuminating the entire hall.
"Phew... we walked quite a bit today. Chloe, sorry, but could you go gather some firewood? I'll get the tent ready."
Mirene said this as she set the lantern on the ground.
"Yes, of course. I'll be right back."
Chloe glanced briefly at Rimuru, then opened her mouth slightly as if she wanted to say something. But in the end, she simply nodded silently and disappeared into a nearby passage.
Her footsteps faded into the distance.
In the safe zone hall, only Mirene and Rimuru remained.
For a while, Mirene simply stared at Rimuru. The bright, big-sisterly air she had carried until just moments ago slowly faded from her amber eyes.
"...We're all alone now."
Her voice had changed.
A coaxing, pleading tone—and yet, with a somehow maddening resonance.
Mirene picked Rimuru up and gently slipped him inside the sleeping bag she had just spread out. She herself lay down beside it, pressing Rimuru's jelly-like body against her chest.
(*Huh—what is she—*)
Rimuru was bewildered.
But his slime instincts—no. Her body heat was simply too warm, and his body clung to her of its own accord. The soft sensation transmitted through her clothes. A woman's scent—a raw smell, mingling sweat with something floral.
(*Stop it, pull away—*)
His reason screamed, but his jelly-like body would not obey. If anything, seeking that warmth, it seemed to gradually seep into her skin.
Rimuru became afraid of himself. He felt as though his former human self was slowly melting away.
"Rimuru... you belong only to me."
Mirene whispered into his ear.
No, he didn't have ears—but the slime's senses, which perceived magical power, delivered her words directly into Rimuru's consciousness.
"I won't give you to anyone. I'll never, ever let you go."
Her body heat rose further.
A Stigma bearer who controlled flame and heat—as a side effect of that power, Mirene's body temperature was higher than normal. And the stronger that warmth became, the more Rimuru could sense the cold wound deep within her heart.
His magical perception ability as a slime involuntarily read her inner self.
(*This is—*)
A house burning down.
The voices of children screaming within the flames.
The sensation of desperately reaching out for someone's hand.
And—that hand was never grasped by anyone.
Rimuru trembled.
This was her memory. The death of her family she had experienced as a child—the moment she awakened to her Stigma, she had been left all alone in this world.
The reason she was driven mad by possessiveness, the reason she sought warmth—it all flowed directly into Rimuru's body.
(*Ah, I see—this person has been*)
alone all this time.
Unable to rely on anyone, unable to open her heart to anyone, she had lived by putting on a strong front. Chloe was her only partner, but even so—she couldn't show her the very bottom of her heart.
But to a slime.
To this cute pet that couldn't speak.
(*I am—*)
Rimuru realized it.
Unable to speak, he had become a vessel that accepted all of her secrets. A realm no human could ever have entered, he had stepped into precisely because he existed as a slime.
The feeling that he couldn't leave her alone—and the fear that if he stayed here like this, he might cease to be himself.
Those two emotions swirled within Rimuru.
"Rimuru... you're so warm."
Mirene's voice trembled with rapture. Both her arms squeezed Rimuru's body tightly.
His jelly-like body grew warmer and warmer with her heat. It felt good. Terrifyingly good.
(*Am I... okay with this?*)
Rimuru murmured in his heart.
No answer came.
He just felt that her loneliness and his own sense of loss were overlapping in a strange way.
---
"I've returned."
Chloe's voice came from the direction of the passage.
In that instant—
Mirene immediately pulled her body away and slipped smoothly out of the sleeping bag. The movement was so swift, it was as if nothing had happened at all.
"Welcome back! Thanks, that's a huge help."
Her voice had returned to its usual bright, big-sisterly tone.
She took Rimuru out of the sleeping bag and placed him in a corner of the tent as if nothing had happened. The gesture was as natural as handling a mere cute pet.
Trembling, Rimuru shuddered at the speed of her transformation.
(*That voice from just now—what was that?*)
The thick, murky emotions at the very bottom of her heart. Rimuru instinctively understood that this was something she absolutely could not show Chloe.
"Let's start a fire. It seems like it will be cold tonight."
Knowing nothing, Chloe smiled as she began preparing the campfire.
"Right. And with Rimuru here, it looks like it'll be a warm night."
Saying this, Mirene showed her usual smile.
But—Rimuru understood.
What lay hidden behind that smile: a possessiveness and loneliness she could show to no one.
(*I've... wedged myself between these two.*)
Mirene and Chloe. A relationship where they had fought together as partners for two years. From the outside, their bond seemed firmly tied.
But Mirene couldn't show even Chloe the bottom of her heart.
The only one she could confide her true feelings to—was Rimuru.
Precisely because he was a slime who couldn't speak, he had accepted her secrets.
(*This is... twisted.*)
Rimuru felt his body's trembling wouldn't stop.
The campfire was lit, and the two began their usual conversation. Talk of today's exploration, plans for tomorrow, what they wanted to eat when they returned to the guild—such trivial, innocent chatter.
But to Rimuru, behind every single exchange, something else seemed to lurk.
Every time Chloe spoke, Mirene's gaze flicked toward Rimuru.
Every time Chloe looked at Rimuru, Mirene's amber eyes narrowed just a little.
(*Is this... jealousy?*)
Rimuru became aware that he, a twisted wedge, had been driven into the relationship between these two.
And surely, from now on—this distortion would only grow.
That premonition made the golden points of light within Rimuru's body tremble coldly.
The firelight flickered.
Mirene was laughing.
Chloe was laughing too.
But—between those smiles, something had definitely slipped in.
A wedge named a pale blue, translucent slime that could not speak.
Rimuru curled his body up, small.
So that no one would notice—yet the trembling went on, and on, for a long, long time.
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