Polymorph: A Human Disguise
After polymorph (illustration). What time is it now? Looking out the window, the sky had already darkened, and the moon was rising. It hadn't been long since lunch, and I'd already gone four rounds, but it was already this late. Snapping out of it, I took in the incredible sight before me.
"Haaah...♥ Haaah♥— It's really full...♥ Cough!♥ My belly's stuffed full♥♥"
Cecilia was stroking her swollen belly, her bunny girl outfit—including the stockings—riddled with holes from my acidic fluids.
"...Groooan— Hngh— Haa...♥ Insane... fuck...ing..."
Ellen had her face planted on the floor, her ass and anus beet-red and swollen as she lifted her hips high, spewing filthy words. The bruises on her nape, breasts, ass, and lower belly seemed to heal only to be rebranded anew.
And finally, Bella...
"......"
She'd passed out completely. Milky fluid mixed with clear liquid dribbled from her puffy, inverted nipples.
...Did I go a bit overboard? Even my dick tentacles weren't producing semen anymore—just spurting out watery fluid. Ugh... no more, seriously. My body felt utterly drained.
No wonder. Look at this dressing room. Clothes were scattered everywhere, and the floor was pooled with semen and pussy juices up to about an inch deep. Even in this tiny eight-by-eight space... I'd cum buckets. And this was after having the creatures clean up midway.
The burning event... I really went all out, turning everything white. I wouldn't even think of sex for a while.
How much did I even shoot?
Right on cue, the level-up message chimed. It had rung once more while I was creampieing Ellen's ass earlier, so that made two levels total.
A new skill, huh. The Seed Reproduction skill from last time had been super useful, so I was inwardly excited about what this one might be.
Opening the skill window with anticipation, the name at the bottom read...
Polymorph Lv.1
Transforms the body to mimic the appearance of other races besides Tentacle Monster.
Can only transform into races whose females have been conquered. Completion rate increases with user's spellpower.
*Currently transformable races
-Human
-Elf
*Basic stats are adjusted by skill level.
Current adjustment: 70% of base stats
Whoa... So that's why the System told me to hit level 10 before eating Ariel? This was on a whole other level from Seed Reproduction at level 5.
Of course, this tentacle body was superior in physical aspects and efficiency compared to a human's. But the stats would drop. With my current spellpower at 20, a 70% adjustment meant 14. That was like losing two full levels.
But even with all those penalties, Polymorph was incredibly appealing. Wandering the village in this body would just aggro every resident and get me purified by Ariel into dog chow.
Just when I needed a breakthrough, this perfect skill drops in.
'As expected, System. You've got it all planned out!'
I am merely providing the best advice for your growth, user.
A sudden thought hit me: Why are you helping me grow, anyway?
I exist for that purpose. Additional information requires administrator privileges...
"Yeah, yeah. Didn't expect a straight answer anyway. Still, thanks."
With the new skill in hand, I decided to test it right away by transforming into a human.
Insufficient stamina remaining. Skill cannot be cast. Please rest and try again.
Damn it. Tease me like that and then this? Sigh... The girls were all exhausted and asleep anyway, so I decided to rest too. I summoned creatures to clean the dressing room, then carried the females one by one to the master bedroom.
Finally, the time had come. My monstrous tentacle stamina recovered me quickly—I didn't have to wait long before I could cast Polymorph.
My whole body writhed, bones cracking ominously. All tentacles, including the vision ones, vanished, and my senses cut out completely. Panicking a bit at the sudden change, my vision and senses soon returned.
The sensation of being human again after so long. The musky scent of semen and pussy juices, the humid air on my skin. Looking down at my hands and feet, clenching and unclenching them—it really felt real.
"Ngh. Even in a human body, the dick's still the same."
Not even hard, it was already about eight inches. And...
"It can grow bigger too?"
The moment I thought about enlarging my cock, it flushed red briefly and thickened, growing longer and girthier than before. Curious, I imagined 'hand turns into tentacle'—and it instantly morphed into a tentacle monster appendage.
While experimenting with the polymorph body, post-childbirth Cecilia stirred awake.
"Huh...? Where's Master...? Sniff sniff. Could it be... Master? It is, right?!"
She eyed my transformed self suspiciously at first, but caught my scent and beamed her usual sunny smile.
Her sharp instincts always gave me chills. How does she recognize me just by smell? She's not even a beastkin.
"Yeah. I can revert too."
Shlorp!—I showed her my tentacle-transformed hand, and she glomped me. Her massive tits squished against my chest. I nearly got hard again, but not today.
Ellen and Bella woke too, eyeing me warily like Cecilia at first—but relaxed once they saw the tentacle hand.
"Figures, you monster bastard. Another bullshit power. A monster pretending to be human... gives me the creeps."
"Hehe, I didn't imagine you as a tentacle in human skin, but you're way hotter than expected♥"
As I glared down at Ellen's contemptuous gaze—itching to smack her around—Bella quietly handed me a hand mirror.

'Ooh... I'm a total hunk.'
My original hair and eye colors intact on a striking male face. Sharp, masculine features on a small face that rivaled idols. Not bulky like David, but toned and solid muscle all over. I could tweak it anytime, but this default form was perfect.
The initial polymorph form is based on the user's internalized 'ideal male' image.
Makes sense why it fit my style. Back on Earth, I never obsessed over looks, but seeing is believing. Feeling this handsome was pretty great.
Anyway, I'd mostly use this form in the village from now on. Time to adapt. It'd only been so long since tentacle form that human senses felt awkward already. Stats down would make it worse.
Might as well check the status window.
Monster - Tentacle Monster (Polymorph - Human) Lv.10 (00.08%)
HP 100%
All stats except Luck adjusted to 70% in parentheses. Decimals rounded. And 24 remaining points? When did it pile up like that?
Couldn't hoard forever. Time to spend. First... the System-stressed spellpower.
Minimum 33 spellpower pre-polymorph.
I dumped 13 points into spellpower, hitting 33. 11 left... Stamina? Even outside sex, skills drain it.
No unimportant stats exist, but for priorities, I recommend Agility.
'Huh, Agility? I'll hypnotize 'em anyway. Need that?'
Agility boosts not just movement speed, but reaction time, perception, judgment, and cognition. Invest 5 points and see for yourself.
Hmm... Odd compared to my thinking, but the System had always kept me alive without losses. Trusting it again, I pumped Agility to 26.
Whoa!
No bodily change from +13 spellpower, but +5 Agility hit hard. The world felt slowed. Ignore it, and time flowed normal—but focus, tense muscles, and Agility's power shone.
For example, Cecilia's bouncing tits in slo-mo... Or during that one second Ellen squirted after I smacked her pussy, plotting how to deliciously ass-fuck her for maximum notoriety.
This at just 26 Agility—or 18 in polymorph. No contest.
I dumped the last 6 into Agility.
Final stats:
Monster - Tentacle Monster (Polymorph - Human) Lv.10 (00.08%)
HP 100%
"Nghhh— Solid as fuck!"
Now, just conquer the village and eat mid-rank nun Ariel. Spread those legs nice and wait, Ariel.