Needing no further invitation, you approached three of Erika's torsos with a trio of your bodies while your fourth one joined Mary in pleasuring the fourth upper body. Meanwhile, your six clones in Sarah's room were giving the tricephalic high schooler the time of her life, and your remaining eleven duplicates spread out into other empty bedrooms for some intimate "self-exploration".
Though you had intended to try making Erika feel as much pleasure as possible, you found yourself on the receiving end instead as eighteen hands worked in perfect coordination to service your hypersensitive cocks and pussies. While a pair of her heads passionately kissed two of yours, four more of the scientist's lips instead opted to kiss your top pairs of breasts, her tongues battling for dominance with your own triple-tongued lipples. All the while, her delicate fingers caressed your pillowy mounds, occasionally squeezing the soft mounds of flesh with just the the right amount of force to make it feel like you were receiving several million of the highest quality tit massages at once.
Mary wasn't slacking either, and while six of her tentacles were busy coiling around her wife's last torso, she still had two left to stroke a couple of your unattended penises. As the rubbery appendages slid up and down your four-foot-long rods, she paused every time she reached the tip to let her suckers tease your glans while siphoning more precum out of their tips.
While all of this continued, things were heating up in Sarah's bedroom as well. As the girl came down from her second climax, you determined that while your most recent change made her look similar to you, it did not give her your multiplication trait. Wanting to reciprocate after how good you made her feel, she asked while sitting at the edge of her bed, "Say, Mrs. Johnson, could you stand next to each other around me? There's something I want to try."
Obliging her request, all six of you stood in a tight semi-circle around her, wondering what she had planned. Wearing a trio of smug grins on her faces, Sarah reached out an arm towards each of your bodies, grasping six of your cocks. Clearly in no rush to make you cum too quickly, she slowly slid the tips of her fingers up and down along your impressive lengths. Judging by how her fingers trailed across all of your most vulnerable spots, you wondered if she perhaps had an even more intimate knowledge of your incredibly similar bodies than you did.
"It's a shame that I can't please all of your cocks at once," Sarah mumbled a bit disappointedly. "I wanna see you cum as much as possible, so feel free to lend some hands," she encouraged you, clearly not letting her limitations stop her.
Taking her cue, you not only started stroking the other two penises on each body, but you also devoted another pair of hands to each of your dicknipples. As Sarah began to rub your members more vigorously, you matched her pace and started to moan. Two by two, your heads turned to kiss each other in a dance of six tongues between each pair, and every third head just kissed the odd head out on their neighboring body. For even more stimulation, you started twirling around the tongues inside your vagina nipples, constantly passing them over your triplicated clits.
Feeling yourself getting close, you moaned with several mouths in sync, "Ohh, Sarah, I'm getting close..."
Just as your thirty cocks began twitching, the young woman opened all her mouths and lipples and stuck her twenty-one tongues out in anticipation before giving the last few strokes needed to push you over the edge. Crying out in bliss, it felt as if you had over thirty million dicks cumming at once while your throbbing joysticks pumped out rope after rope of hot, sticky cum and absolutely drenched Sarah with it. Even as each body split into seven, your balls still weren't done emptying themselves, which caused the volume of spunk you were spewing out to septuple.
With such a massive climax echoing throughout your linked bodies, barely a moment passed after you finished splitting before the twenty-eight of you in the master bedroom along with another sixty-three of yourselves in the other rooms orgasmed as well. Each copy multiplying by ninety-two this time, you soon were back up to a tantalizing 13,524 bodies, each one brimming with hormones and renewed energy.
As thanks to Sarah for her amazing service, you pressed her down to the bed and started licking all of your cum off of her using as many tongues as you could. Every time you gathered a mouthful of white liquid, you brough your faces up to Sarah's and shared it with her, allowing any of your numerous other bodies to start gathering the next load while you locked lips.
Now far outnumbering Erika's torsos, you had twelve of your clones surround and fondle three of her upper bodies. Bombarded by numerous hands, lips and dicks, it wasn't long at all before the hydra-lamia came, causing her to gain three more branches. As she grew more numerous, it seemed as if her snake half was getting longer, allowing her torsos to get further and further away from each other. Erika's remaining torso also succumbed to the ministrations of you and Mary shortly after, adding an eigth copy of her upper body to her rapidly growing form. All the while, the scylla still didn't release those two of your cocks from her prehensile grip.
As you continued to gangbang seven of Erika's branches, another wave of climaxes rocked her conjoined body. Now equipped with fifteen upper bodies, she devoted three of them towards pleasuring her wife. After the five-breasted octopus-woman reached her peak, her tentacles slackened up enough that you were able to free your penises from their confines. A few moments later, your own selfcestual orgies elsewhere in the house caused each of your bodies to split into two hundred and fifty-six more. Feeling a bit bad about how quickly Mary was getting outnumbered by you and her wife, you had one of your 3.4 million duplicates pick up the phone and generate a sentence about her.
"This scylla housewife is experiencing euphoria after her recent orgasm."
After rummaging through your writer's vocabulary for a word similar to "multiplication", you settled on "mitosis" and substituted it into the sentence in place of "orgasm". Tapping confirm, you noticed reality bend as there were suddenly two identical scyllas next to each other, their tentacles playfully twisting around each other.
"Mmm, I simply *love* how it feels when I split in two like that," one Mary said as she idly played with one of her nipples.
"Right?" The other Mary agreed before adding, "And judging by how turned on Erika looks, I bet we're not the only ones who enjoy it."
Licking her lips as she glanced over at you, the first scylla asked, "Do you wanna see us do it again?"
Joining in, the second Mary said, "We're getting so turned on just from seeing those long..."
"...hard..." Mary 1 continued.
""...Cocks,"" both said in unison, ""That we might just double again right now."" As the twinned housewives scuttled their way towards one of your bodies, you noticed that their heads were starting to duplicate while their tentacles also began splitting at the tips. Speaking one after another, the duo continued dividing into four as they lustfully taunted you.
"You know we multiply quicker when we're aroused."
"Look how wet Mary is already! Don't you want to just shove that dick into her as far as you can?"
"It doesn't matter which of us you do it with first."
"After all, anything one of us feels gets felt by all of us."
Before you knew it, a writhing mass of thirty-two tentacles had entrapped one of your bodies, bathing you in pleasure as every inch of your skin got caressed by the flexible appendages while their suckers left hickies all over the place.
Clearly, things were only getting started.