The next morning, Simon woke up late. The bedroom was empty, and the first thing he noticed is that the windows were all open, and the ceiling fan was spinning away.
It was hot for sure. Simon groaned, rolling over so he could retrieve his glasses, thankful he had spent the night in just his underwear. Pajamas would have made him melt with this heat. Summer really had started fast. Though he couldn't help wondering where his brothers had gone… not that it took too much thought. Simon sighed as he placed his glasses on, turning to the door. It was left open a little.
"Let's see the damage…" Simon said with a soft sigh. He didn't bother getting dressed, opting to go right out of the room as is. Dave might still be asleep, or sequestered to his room to try and beat the heat. Either way, Simon didn't have to worry about being seen nearly naked.
As he was descending the stairway, though, he could see the door to the basement was wide open as well. Simon approached it and peeked inside. The lights were off, but he could see a slight red and green glow down in the dark. The now familiar sound of his brothers moaning were easy to hear now, so Simon flicked on the light.
He was going to head down, but another set of moans caught his attention. It was… much different than what he was "used" to. It wasn't Alvin or Theodore.
"I-It's getting really tight… should we pull out?"
"Like that's done any good the other three times. Just keep going, Theo."
Simon sighed, rolling his eyes. Maybe he was just hearing things. So, closing the door, he made his way down the stairs. "Guys, really? Of all the things to do, you could have at least asked. You know I'm still-" Simon fell silent then.
Seeing his two brothers naked and plowing into the goo wasn't a shock to him anymore, with Alvin by its head and Theo down between its legs, both holding on to it tightly. But what did catch his attention was the goo itself. The simplistic body it had just the other day was now more developed. Now it was about the same height as Theodore, with a more defined, chipmunk like shape to it.
Its arms and legs all ended in four digits now instead of just nubs. The head was a little smaller, possessing a similar shape to theirs, muzzle and everything. It's middle was noticeably longer with a build much like Alvin's. The lower half of its body was more… plump. At least in the spots that would be hips and thighs. The tail it had now had spots where it had hardened to look like fur. And, lastly, those tendrils were just longer than usual, though that could have been because they were in use, either wrapped around Alvin and Theodore, or buried into their rears.
Simon shook himself from the daze and prepared to move, but a familiar tingle between his legs stopped him in his tracks. He didn't have to look down to know he had started to tent his underwear, now wishing he had covered up. It didn't seem like he was noticed just yet.
"Gonna… gonna cum aga- a-aaaahhh yeah…". Alvin hilted inside of the goo's mouth, trembling as he unloaded another round of his cum inside of it. When he did, Theodore rammed himself to the base as well, grinding against the goo's form as he tossed his head back with a loud moan.
Biting his lip, Simon just watched them from the bottom step, his tent throbbing and demanding attention. Right as he took hold of it though, Alvin turned his head, spotting him instantly. "S-Si…? Oh, hey bro. Thought you were still asleep." He said.
"I-I was! Why are you two even down here?" Simon blurted out, moving his hand quickly and standing up. "I thought I told you two to not feed it!" He huffed, making his way over.
Alvin rolled his eyes, his teeth grit as he made himself pull out. "You slow your roll there, Professor Sexgoo." He huffed. "We came down here cuz it was hot upstairs. You're the one who left your fridge wide open for this thing to crawl out!"
"I did no such thing!" Simon insisted, crossing his arms over his chest. "I made sure it was closed. You two just couldn't help yourselves and had to interfere!"
"Uh, S-Simon? Alvin's right." Theodore interrupted, slowly moving from the goo. "It was out when we got here… We tried to put it back in, but when we touched it we just got all… you know." He said, looking down at his feet. "Sorry if we messed anything up…"
"No it's… Theo I didn't mean… ughhh, it's okay." Simon groaned. "I just need to know everything it does."
He turned his attention to the goo. As soon as he did, it changed its color right back to blue. Simon noticed that its core was floating within the head now. "So… you guys just touched it and you were aroused?"
Theodore nodded his head. "It was actually kinda sticky instead of smooth this time. That isn't normal?"
Simon shook his head, approaching the goo as his brothers stepped aside. "Alvin, you're close to the table. I'm gonna need a few swabs." he says, crouching down. "I'm gonna have to see why it's-"
"Uhh, Si? Normally I don't care to comment, but are you sure you wanna touch it while you're hard as a rock?" Alvin interrupted. "I mean… Me and Theo were soft when we got down here. So whatever that stuff is, it works fast." He says, scratching the back of his head.
"I…" Simon paused. If those two were going at it for that long, and they were still hard… "No, it'll be alright. After all, I'm probably already used to its effects. Plus it's my responsibility to know everything it can do, and everything it will do." Simon insisted.
Alvin just shrugged and did as he asked, gathering a few cotton swabs from Simon's work desk and handing them over. Simon was careful, looking right at the goo's core for a reaction as he ran the cotton along the surface, gathering a good amount of the substance. When he did, though, the core swiveled away, stopping somewhere within its belly as it let out a gurgling sound, leaning away from the swabs.
"Alright then. If you guys don't mind, I'd like some time to study this. Maybe you two could…" He trailed off, looking to his brothers. "Er, just… take care of yourselves." He said as he went to his desk to set down the swabs, reaching for his microscope.
"Heh. You know, Si… you obviously need it too." Alvin pointed out. "C'mon little bro, we'll get it all out and then you can come back to your nerd stuff!"
Simon was going to deny, but both Alvin and Theodore took hold of his hands, taking him from the desk and leading him up the stairs. "W-Wait, wait! Guys come on, it's not a big deal! I'm serious!" Simon protested, trying his best to tug free to no avail. "It's not even back in the fridge!"
"Heh. See Si? With how much you're throbbing, you should be done in no time~"
"Alvin, please don't."
"Guuuuys, you keep bumping me!"
Simon sighed in defeat. Here he was, on his knees in Theodore's bed, huddled together with his brothers. The three of them were busy masturbating together, paws going at their own paces. Alvin was in a rush, while Simon and Theodore kept it steady.
For all his protesting, Simon surprised himself by actually changing his mind halfway up the stairs. One moment he was adamant about being left alone, then… he couldn't help staring at the way his brothers' lengths bobbed with each step they took.
It wouldn't be as distracting if Alvin's hurry didn't cause him to press his tip against theirs. Theodore didn't seem to mind too much outside of a little whining. Whenever Simon tried to focus on his change of heart, he found himself stroking his length faster.
"Still wanna back out, Simon?" Alvin teased, scooting forward so his shaft would rub up on Simon's. "C'mon, admit it~. You waaaanted to join in."
"Alvin, keep it to yourself!" Simon snapped, lightly pushing back against Alvin, who's response was just a louder moan.
"Heh… keep pushing like that and I'll get to shoot first~" Alvin commented with a goofy little grin.
Simon huffed, closing his eyes. If he was stuck here, he may as well think up something worthwhile. His thoughts wandered, but not to where he expected.
Instead of an explanation, all Simon could think of was Jeanette. And when he did, the tingles that ran throughout his body made his thoughts stay on her. Her hair, her eyes, her… wearing almost nothing… beckoning to him…
"Guys! I'm gonna shoot, I'm gonna shoot!" Theodore squealed out, his back arching as he took hold of his shaft in both hands, pumping himself rapidly while Alvin encouraged him.
Try as he might, Simon's little fantasy was broken when he felt a few heavy, rather warm shots land on his cock as Theodore came. "Oh my god, Theodore if you're gonna do that at least-!" Simon stopped himself as he opened his eyes.
He hadn't noticed earlier, but… there was no way Theodore was always big enough to need both hands. And from what he saw with the goo, Theodore wasn't this productive last time neither. Even with the initial spurts were done, Theodore was still milking himself empty, now laid out on his back.
"What're you yellin' for, Si? Focus." Alvin said. "Or at least just pipe down, I'm getting close."
Simon couldn't help staring at Alvin as well. He was bigger too… Simon bit his lip a little as he returned to stroking himself. As much as he didn't want to, he couldn't help but work his brothers into his fantasies as well. He let out a little groan from the thoughts, his hips rocking back and forth now. Even as he heard Alvin hitting his peak, Simon tried to focus on himself.
Minutes passed, and Simon was still working on himself. That is, until he felt a paw atop his.
"I know you wanna do your own thing, but… you're taking forever man. Lemme help." Alvin insisted, prying Simon's hand off of his shaft. Before Simon could protest, Alvin got to work fapping him off, focusing closer to the head. Simon gasped, covering up his mouth and leaning back, propped up on his arm.
He was quick to silence himself for sure, confusion mingling in with his pleasure. The feeling only grew when Theodore moved over, reaching down to fondle his balls. "You're close too, right Simon? Let it out!" Theo encouraged.
"I can d-do it myself…" Simon said through his hand, eyes closing tight.
"Yeah, maybe. But you're taking forever. And you're the nerd who wanted to get back to research or whatever." Alvin said. "You're throbbing again now that me and Theo are helping. You should think of Jeanette doing it instead~. Bet that'll make you lose it in no time!"
Simon closed his eyes and tried to ignore them. Jeanette was back in his mind… her hands on him instead of his brothers. Her face right there by his tip, running her tongue against it as she encouraged him to unload. Ultimately, he held his head back and moaned to the ceiling, bucking his hips upwards into his brothers' holds. It was too much… Simon tried his best to hold back, but he couldn't. With one more thrust, he ended up unloading, laying out flat on his back as he came, feeling his shaft twitch and throb each time it shot.
His brothers didn't stop stroking him though, still moving his length about while his orgasm wracked his body.
"Jeaaaan…" he moaned quietly, already panting away as he clawed at the blankets under him. His hips jerked slightly as the afterglow began to settle in, leaving him tingling with pleasure as he caught his breath.
"Hehe… Was it a good thought, Simon?" Theodore's voice made Simon peek open an eye, though it went wide as he soon took in the sight. His brothers had moved closer when he came, and all of his cum had landed on their faces. To make matters worse, they were both grinning at him. Even without that lustful glaze in their eyes, they still didn't seem to mind what had happened.
Alvin wiped his cheek, looking right at Simon before sticking his tongue out. "Heh. Not as much as us. You must be jacking it too often, Si. Anyways, Theo asked a question. Answer like a good big brother." He said as he gave the mess on his paw a little lick.
Simon visibly trembled, but sighed in defeat. "Y-Yeah… yeah it was." He admitted.
"Good. Now you can go back to work~ You did say it's important, right?" Alvin cooed.
Later that day, Simon was on his way to the Miller house. After a few tests, well… he found himself at a bit of a wall. Not only did the goo cause Alvin and Theodore to grow somehow, he also found it at the basement's door trying to get out.
Now, he had improvised. He was carrying the goo in a big cardboard box, just enough to keep it in and give it enough room to move some.
"I know it's not the best time, but I need you to test it at your place." He had told Jeanette. She said she didn't mind, but he still felt weary about it. With the effects it had on his brothers… He felt bad knowing it'd be released like that.
With the house coming up, Simon put a little hurry in his step, looking down to the box. "It's alright… You're gonna be fine." he whispered to it, grunting as he adjusted his hold on the box, gripping it by the handles.
As soon as he was by the door, he set the box down and knocked at the door several times before waiting.
When the door opened, he was surprised to see Brittany leaning in the doorway, looking right at him. "Oh, it's just you Si. Jeanette said you were gonna be coming by. What's in the box?" She asked, leaning over to get a better look.
"I-It's just a little… science project we have." Simon quickly said.
Brittany looked at him sideways, but shrugged her shoulders. "You can wait in the room if you want. She's in the bathroom." She said, pulling away from the door.
Simon felt his cheeks warming up at the thought. He sighed, hefting up the box and bringing it right inside. There was something sweet on the air, no doubt coming from the kitchen. 'Eleanor must be making something…' he thought as he looked around.
"Didn't know you two had a project going on. Jean was acting pretty weird last time you brought something over, ya know." Brittany spoke, moving over to his side. "What's going on here, huh? If I know one thing about Jeanette, it's that she's always got a reason when she acts weird. But this time, she didn't say anything."
"It's nothing big. Just something we want to keep a secret for now." Simon insisted as he sat down on the couch.
As soon as the word "secret" came out, Brittany's gaze lit up. Then, she grinned, her arms crossed over her chest as she watched him. "Oh, I see what's going on now. Heheh… Well, you two enjoy your "project" all you want. But ya better not hurt her, you hear? If you do, I'll make sure you never hear the end of it." Brittany spoke.
"W-What?! No, it's nothing like that! I'm serious, we're working on a-"
"Simon? Is that you?" Jeanette's voice interrupted him from the second floor. Simon didn't dare to look away from Brittany's stare, so he just responded with a quick "Yes! I brought your part like I said!".
"Oh! Lemme get dressed, I won't take long!" She called, followed by the sound of a door closing. Simon gulped, sitting up. "See? Just a project." He insisted.
"Yeah yeah, sure. Just watch yourself, buddy. Jean's a great girl." Brittany said, plopping down on the couch before flipping on the tv.
Simon bit down on his lip, making sure he didn't say a thing until Jeanette called him up.
…
"So… You want me to… get Brittany and Eleanor to interact with it?" Jeanette asked curiously. "Simon, I dunno if you've noticed yet, but your brothers are a lot more interested in the goo more than my sisters are. A-And look at how big it's gotten! How am I gonna convince them to do anything?"
Jeanette was pacing around her bed as she ranted on, occasionally looking at the goo that sat atop her blankets. "Heck, they might think it's some sort of alien or something! I know it can feel good and all that, but they don't! And it's not like I can just lock them in a room with it!"
"I'm not sure, Jean… Maybe… Maybe you can just… let yourself be caught?" Simon offered. "It'll do well enough to make it look enjoyable, I'm sure…" he spoke, cheeks reddening at the thought. "You just have to be careful with it. It's been producing some sort of aphrodisiac recently. Don't know the exact compounds of the substance, but the effects are undeniable. Be careful, Jeanette."
"Simon… Ice still works if I want to make it back off, right?" Jeanette asked softly, rubbing her arm as she looked right at him. "I don't want it getting the upper hand…"
"Of course it does! Just anything too cold will do, I promise." Simon said as he went over to her side. His hand was shaky, but he put it on her shoulder anyway. "You're gonna be alright Jean. And if you don't want to, I'll take it back right now."
To that, Jean shook her head. "No… May as well go through with it. I'll just make sure nothing weird happens." She says with a nod. "Besides. It's gotta stop growing eventually. Maybe when it gets to that point it'll be done." She says. "I'll try to have the test done tonight. And when it's over, well… hopefully it still fits in the box."
Simon nodded then, patting the box as he hopped off the bed. "Well Jean, I guess I'll leave you to it. Don't wanna be getting in the way when it happens and all that." Simon said.
He paused when Jeanette's hand caught his. "Uh… Simon? You mind just hanging out again today?" She asked simply. "It's still kinda early, and I don't have a lot to do now that school's out."
With his cheeks burning bright again, Simon stopped in his tracks completely, sitting back down on the bed. "I… guess I can spare an hour or two. Or more."
"I was hoping you'd say that."
A/N
Soooo... I kinda have a plan now. Sucks that it took me this long to get one, but nonetheless, the next chapters shouldn't take as long to come out. Hopefully. Not sure how many people are still reading this, but if you are then thank you for the patience!
KRS, Out!