A Grip-Friendly Dildo
Squelch♥ schlick... schlick♥
"Haaah... nngh♥!!"
Fwoosh♥ fwooooosh—!! splurt♥
Gaaaaah!! I can't stop—!!
Against Topaz's pussy—currently performing a water-release jutsu of staggering magnitude in a place with no water whatsoever—this was the most effective countermeasure I had. I was generating dozens of cocks from a body that possessed none and driving them into her, and it still wasn't enough!! All she'd done was hold out for half a day, and yet she was throwing herself at me with a desperation that called up my past self, the one forced to go a full month without jerking off in boot camp.
Urgh?!
"Oooh♥ hngh♥ haaahnnn..."
Dazed and limp under the mana pouring out of her, I could only hang there as she picked up my tentacle and scraped it roughly through her insides, working it like a dildo.

"Nnh... it's not enooough...! Deeper, push it deepeer...!"
Kieeeek—!!
As if to say it still wasn't enough, Topaz wrapped mana around me and squeezed, demanding I stand up nice and hard. My whole body shuddered at a pain I'd only ever known once as a human—the single most horrific agony of having my balls crushed.
My sweet Topaz would never do this!!
The rough, almost clinical way she handled me, like I was nothing but a sex toy, and the mana blasting out of her with no restraint whatsoever—that was when it hit me. How stupid I'd been, barely half a day ago, snickering to myself about sending Topaz away and savoring that little thrill of conquest. All I'd ever done was take the WWE-style beating she'd been kind enough to hold back on. The defeat I felt, as a tentacle and as a man, defied description.
Sob, sob, I'm just a dildo with a really nice grip!!
"Hngh...♥ heheheh...♥ Feels good for you too, right, Tentacle...?♥"
Nod-nod-nod-nod!!
Was this how a wife felt under domestic abuse? After a few more climaxes, Topaz seemed faintly satisfied and let me go. When she asked, I gestured with everything I had that I agreed—violently so.
"Heheh, thanks for making me feel so goood~"
It wasn't her usual sunny smile. It was slack, almost vacant, a loopy little grin. She stroked me, and I felt my mood lift in spite of myself.
Hah!
One smile. One stroke. And the pain I'd just been through vanished like it had never existed. I felt a flicker of alarm at the power of Topaz's breasts and that face of hers.
"Heheheh, so cuuute..."
Jiggle-jiggle♥
Yeah, well. That part hurt a little, but whatever.
"Ah! Right. I was gonna give this to you right away~ Sorry? I got so horny I totally forgot♥"
She stopped stroking me, something occurring to her, and hopped up to go rummage around the room. The urgent fire had been put out, but she still wasn't satisfied—love juice beaded and dripped from her as she crouched down, ass twitching. A truly admirable sight.
"Ah, found it!"
What Topaz pulled out was a test tube that looked like it belonged in a laboratory, cold vapor shimmering off it. The contents were transparent enough to look empty, and yet I felt my mouth watering for reasons I couldn't explain.
"Aha♥ You like it?"
At some point, without realizing it, I'd stretched out a tentacle to snatch the tube. Topaz pressed it into my waiting tip as if to say, go on, take it, then murmured in a low voice, a smile on her face that was equal parts shy and aroused.
"My eggs♥ Eat them all up...?"
Holy shit.
So she'd extracted her ova and frozen them in advance, knowing her own mana would keep my tentacles from ever reaching her womb.
"Hurry up and eat♥"
Caught in a swirl of emotion I couldn't name—moved, impressed, horrified—I popped the cork from the test tube as if under a spell.
Pop♥
A sweet, mellow scent bloomed from the tube, the way a well-aged wine smells when you pull the cork. Common sense said an ovum, something you couldn't even see with the naked eye, had no business smelling this rich. Then again, this was an eroge world. Maybe it really did smell that sweet.
Slurp
Afraid of spilling even a drop, I carefully sucked up every last bit of liquid in the tube. The preservative itself had no taste, and yet even that liquid carried a dense, lingering flavor.
Pop♥
And then, midway through, a little granule that burst as I chewed.
The first time I'd taken in Topaz's mana, I'd thought it tasted better than anything I'd ever eaten as a human. This was beyond that. The flavor that had seeped into the preservative was nothing—less than a bag of nitrogen-puffed chips with 0.003% truffle—compared to the dense, melting richness that crashed over every sense I had until they went numb. I resented my own impoverished vocabulary for how badly it failed to describe the taste.
It was the awe of seeing Topaz's pussy for the first time and the pleasure of that first insertion (hymen not breached) all woven together, a moment of self-reflection that made me reconsider the entire purpose of my existence.
Ahh. So this is what they call a fortuitous encounter...!
I imagined this was what those miracle elixirs the protagonists of wuxia novels stumble into must taste like. There wasn't much change on the outside, but I could feel the quality and quantity of my mana rising sharply from consuming the ovum. I was certain now—I could digest the mana gushing out of something as trivial as love juice without breaking a sweat!
—I can do this. Right now!!
Swollen with newfound confidence, I lunged at Topaz, who was waiting for me to compose myself.
"Kyaa~♥ You're all perked up~♥"
Thanks to the growth, I could feel it now. The alien mana mixed in among everything inside Topaz...! She'd never exactly seemed all there, but before it had been the clear-eyed madness of a cheerful lunatic. Now she just seemed like a complete psycho, and I had a feeling that mana was the reason. Could it be Black Mana?
Squelch
"Ahn♥"
For a closer look, I slid a cock into her like an endoscope, but unfortunately I still couldn't get any further—her hymen barred the way.
"Nnh, it's... it's touching...♥"
Growth was growth, I supposed. Before, my tentacles had evaporated in the condensed mana before they even reached her hymen. Now they weren't dissolving in the high-concentration mana inside Topaz's vagina. But it was like she'd laid an aura shield over the damn thing—no matter how hard I prodded, I couldn't get through.
"Ook?! Nnh, Te-Tentacle... hang in there♥"
If it had felt hard, I probably could have punched through somehow. But it was skin tissue, soft and yielding, and trying to push through it felt like trying to pop a rubber balloon. I couldn't get a clean breach.
Whiiiiir!!
My tentacleeee!! Is a tentacle that WILL penetrate this pussy!!!
I spun the tentacle wildly, rolling it over and over like a drill.
"Oooh?! Th-that's too much...!"
Rip
"Hnh?!"
For a split second I felt the hymen tear, and then my tentacle was sucked in to a depth I'd never reached, sliding forward with no resistance at all.
Schlck♥
"Hoooooh?! I-it's iiiin....♥"
And then resistance again. Unlike the tough, stretchy feel of the hymen, this entrance was relatively firm, with a springy tautness.
Tap-tap♥
"Ok?! D-don't knock on my womb... I haven't dropped an egg yet...."
Watching Topaz come apart as I knocked on her cervical opening, I decided I wasn't falling for it this time.
You were just going to get rough again the second it wasn't enough! Just like an eroge doujinshi!
Thump♥ thump♥ tumble-tumble♥
"Ook?! W-wait a sec...♥"
I won't be fooled again!! Yah! Yah!
Hadn't I calmed down when she stroked me earlier? That was that, and this was this. I put the free movement of my tentacles to 1,000% use, scraping her vaginal walls, fine-tuning against her reactions to see if the G-spot actually existed, and keeping up a steady knock on her cervix until her pronunciation collapsed and she looked ready to die of pleasure.
Stroke... stroke... schlick♥
"Hyaaaaah!! Th-there!! Hyaaah!!"
When I scraped the upper wall about halfway in, she screamed outright and her whole body shook. Confirmation that the G-spot was real. Thrilled, I sped up the caress.
"Hoh♥ ooooh♥ ~~~!!!"
The sounds coming out of her weren't moans anymore—they were the howls of a beast. Her insides clamped down, and for the first time I felt the urge to come. I'd shut off every sensation because my cocks kept dissolving and the pain was unbearable, so this was the first ejaculatory feeling I'd had in a long, long time. I didn't hold back. I pressed tight against her cervix and came.
Bllllrt♥
"Ook...♥ hnh...♥ i-it's hooot..."
Fwooooosh...
Whether every muscle in her body had gone slack from too much climax or not, Topaz squirted not love juice but a stream of golden holy water, and then she passed out on the spot.
Slap-slap
"Nnh...♥ nh♥"
I gave her lower belly a few light slaps to check if she was conscious. She trembled faintly, but showed no sign of coming around. Thanks to that, I could feel around inside her at my leisure, still buried to the hilt.
...Huh? It's gathering around my semen.
The mana I'd been guessing was Black Mana—spread all through Topaz's body—began drawing together into one place, as if it had found a familiar medium in the load I'd just dumped. Once gathered, the Black Mana started condensing, forming something like a nucleus. The sensation was similar to the condensed jewel of mana that sat on her chest when she transformed.
"Ah... aaaah♥ heheheh.... heheheheh...."
I'd been so absorbed in watching the Black Mana gather and shift that I was late to notice Topaz had come to.
"Aaaah♥ it feels so good...! Aaaaaaah!!!! Ah, ah ahahah... hahaha!!"
I'd called her a psycho half-jokingly before. Now she really did sound insane, screaming and laughing in turns. Her pupils contracted and dilated by the second, like she was on something, her whole body broadcasting that she was not okay.
D-don't tell me...
Until I'd come, there'd been a sense of wrongness, but I hadn't been able to confirm it as Black Mana. What if my semen had stimulated it, and Topaz—who'd been teetering on the edge—had well and truly lost it?
"Tentacle♥ cock... give me mooore!!!"
Even more far-gone than before, she lunged and grabbed my tentacles like she meant to tear them off. I did my best to match her, caressing and thrusting as much as she wanted, playing along while I watched for an opening. Centered on the semen I'd shot, the Black Mana clumping in her womb looked like it was trying to take root—like implantation.
No!!! You!!! Don't!!!
Topaz's womb was mine. I had no intention of handing it over to some Black Mana of unknown origin that had rolled in from god knows where.
"Nnh♥ haaahn♥ so good!! More, mooore!!!"
I slathered her body with mucus laced with a heavy dose of aphrodisiac. Her brutal grip eased, as if that satisfied her. Her entire body was basically one giant erogenous zone—a breeze could have set her off—and yet her threshold seemed to be climbing, because she kept demanding more like it still wasn't enough. I paled and scrambled for a faster solution.
Kh... no choice.
The Black Mana was still clumping, still trying to put down roots in Topaz's body, but it wasn't going as well as it seemed to want—gathering and scattering, over and over. My fluids, which should have been the proper vessel for Black Mana, had already taken in Topaz's mana, so they were functioning as a medium but the reaction wasn't firing cleanly. It hadn't rooted yet. A little disgusting, sure, but it was all clumped in one place. If I could just stomach a bit of revulsion, I had a way to pull it out.
Sluuuurp
I'd shut off every sense I had—taste, texture, all of it—and sucked back up the semen I'd just gone to the trouble of dumping inside her. The unpleasant sensation still wouldn't fade.
"Oh... ooooh?! Oweoough? Ugh?!"
The Black Mana–semen mass had already put down faint roots in Topaz's body, and it didn't want to come. I sucked harder. Topaz screamed like a broken toy, clutched her head as if the headache were splitting her skull, and passed out.
Gueeeh...
The moment she lost consciousness, it was like all control over the mana vanished. The resistance disappeared without warning, and I nearly swallowed the whole thing from sucking so hard.
Ptooey—!! ptoo ptoo ptoo ptoo ptooeeeeey!!
I didn't know if it was rejection from being unused to Black Mana or just the act of holding my own semen in my mouth that was so disgusting, but I bolted for the bathroom, puked it straight into the toilet, and flushed.
Hmph. That should bring Topaz back to normal.
No matter how I looked at it, the only explanation for her sudden violence and that slightly ADHD, scatterbrained behavior was the Black Mana. I started tidying the house, which was a wreck of love juice, hoping that when she woke she'd be my sweet Topaz again.
An S-type Topaz every now and then might not be so bad...
Honestly, as long as she didn't make the squeezing actually hurt, it had been pretty good.