Risk Level 6: Undine
Plop! Plop! Plop..! Squelch...!
Even though my body should have been limp and powerless, I found myself pinning Undine beneath me, thrusting like a wild beast. A strange sense of dissonance crept in as I watched my own hips move. Yet that feeling vanished the moment I buried myself in the tight, slick passage she had created solely for my pleasure, savoring the smooth, clinging heat.
"Hah... hah... hngh...!"
'Ahn... mmh, something... ahh...'
Because I shared every sensation with her, the pleasure I felt became hers as well. Hearing the once-gentle woman who called me "dear" now moaning so lewdly filled me with a conqueror's thrill, and I lost myself in the role of a rutting male. I had no choice. That was why I never noticed.
Squeeze...!
I thought I was freely crushing her body and moving as I pleased, but countless slender tentacles had wrapped around me, holding me fast. I simply reveled in the broken cries of the female beneath me, too lost in pleasure to realize the truth.
Now that I thought about it, even in this reduced form, Undine still kept both feet submerged in the lake that filled the containment chamber. She had not separated from it. Her shape had merely changed; her true body remained as vast as ever.
So why had she spoken and acted in a way that deliberately misled me?
The reason was obvious.
"Ugh...?"
Thrust! Twitch, squeeze...!
Before I knew it, the swollen head of my cock had pushed deep into her womb, breaching the narrow cervical entrance in an utterly obscene sight. At the same moment, her inner walls rippled and clamped down around me.
Spurt...! Spurt, spurt...!
"Ah... hah...?"
Overwhelmed by the sight and the surging pleasure, I poured thick, white seed straight into her tiny womb. The hot rush of release melted my thoughts. Only then did I notice that, despite the weakness flooding my limbs, my body refused to collapse forward or backward. It stayed perfectly upright.
"Hah... hah... What...?"
That was when I finally realized the countless tentacles coiled around me had been supporting my movements all along. The conclusion came at once.
'It's so full now... dear.'
Watching Undine gently stroke her lower belly while gazing at the milky fluid filling the womb she had made for me, I understood everything. It had all been a trap she prepared.
She could have simply drawn pleasure from me while keeping me inside her, but that was never what she truly wanted. The emotions she craved were different.
"Hah... hngh... hah..."
For that, I had to act of my own will. I had to desire her, move for her, and pour my feelings into her. So she had created the perfect situation. Weakening my body with pleasure, appearing at my size, pressing close and showing vulnerability—it was all so I would willingly pin her down, take her, and claim her.
Realizing I had merely played into her masturbation left a red haze over my dazed mind. I could now dimly see where this was heading.
Squeeze...! Tighten...!
"Hngh...?"
Because my rising alarm reached her through our link, the slick tentacles no longer bothered to hide. They coiled tighter, moving me as they pleased. When I tried to pull out of her dangerous heat, they pushed my hips forward instead, forcing me deeper.
Her walls clung greedily, refusing to let go, and I helplessly spilled what little seed remained.
'Mmm... Your thick desire... tastes even better when I swallow it into my belly...'
After absorbing every drop and cleaning her womb, Undine pressed her hips against mine again, silently asking for another load. The cool, slick touch of her thighs made my lower body respond eagerly to her seduction.
"Wait... wait a second, Undine... ngh... just...?"
Startled by a wet sound, I straightened up only to realize a tentacle had slipped into my ear canal. The message was clear: she had taken enough pleasure and fresh male desire from me. Now she wanted only one thing more.
'Don't you want to become one with me? We can feel this good... forever and ever...'
A small voice whispered from the tentacle that had invaded my ear, making my head ring. The question echoed inside my skull and felt unmistakably dangerous. Even though I had just finished, both instinct and reason understood the threat.
"..."
Yet I could not answer. I only nodded, as if entranced.
'Heehee... I knew you would agree, dear.'
I frantically shook my head, wondering if even that nod had been forced by her tentacles, but my head moved far too easily. I had nodded of my own accord.
'Hm? No? But doesn't it feel good inside me?'
The tentacle had not pierced my eardrum, yet it felt as though something was gently prodding the deepest parts of my mind. I tried to resist the unsettling sensation, but it was pointless.
Thrust, push...! Squish...!
"...!! Ngh..."
Spurt...! Spurt, spurt...! Gulp, gulp!
Once again she plunged a lively tentacle into the shameful hole she had learned brought the best results, cutting off my resistance before it could form. My flushed cock, now pitifully twitching as it spilled into her pleasant flesh, looked almost pathetic.
'You were so manly earlier... but you seem tired now. If we keep going like this, I don't know what will happen. My body can feel it too.'
My only lifeline was that she would share the sensation the moment I truly reached my limit. But—
'So let's become one, quickly.'
Faced with Undine's gentle urging to merge, I found I could not refuse. The chance to take back my earlier nod and the desire I had poured into her had already slipped away. Even now, I could not bring myself to reject her kind offer.
"Ngh... hngh... Undine..."
Perhaps the reason was simple. If I truly became one with her, the burning ache in my overused cock and the exhaustion from repeated climaxes would vanish, leaving only endless pleasure. My own selfish hope and desire made it impossible to say no.
The thick, addictive pleasure Undine had poured into my mind with her body and heart was something I could no longer let go of, like a growing dependency. Sensing my shameful thoughts, she smiled softly, slowly rose, and wrapped both arms around my neck, meeting my gaze. Her transparent eyes looked like deep wells I might fall into at any moment.
"..."
Thinking it might be all right to accept now, I slowly lowered my head. Just as our lips were about to meet without a word—
Surprisingly, at that very moment, my mouth moved on its own.
"Harpy... Rav..."
Names spilled out. Their faces did not immediately surface in my muddled mind, yet the emotions attached to those names rose clearly.
"Yerin... I don't know about her, but no... I can't... leave them behind..."
'Heeheehee...'
Splash!
Undine's rich laughter and the sudden tightening of her arms around my neck happened almost simultaneously. Gulp...!
I thought our lips had touched, but my body was pulled forward far more than expected. It felt as though I was being drawn into her, slowly sinking into this pleasant swamp.
Even then, because we were still connected, I could feel the brief flicker of disappointment in her. Yet it was quickly buried beneath a stronger sense of delight and satisfaction.
'Thank you for the meal... ♡'
An overwhelming sense of foreignness flooded every part of me—outside and inside—until it felt as though my body was being replaced by something else. A primal fear of my very existence being threatened made me tremble. I wondered if this was the result of ignoring Team Leader's warnings, yet in that moment all fear washed away, replaced by warmth, comfort, and a profound sense of security.
It felt like the gentle kindness of returning to a mother's womb I had long forgotten.
And then I lost consciousness.