Friday, the best day of the week. The day where all kids were finally free of school for two whole days and could run wild with whatever plans they had. When the bell rang, two of the students had headed back to one of their homes as fast as possible to get started.

In Rumble's home, we find said boy on his bed, stark naked with Twilight's head bobbing up and down between his legs. He had changed into his older form since spending so much time in his regular one had proven to be trickier than expected. He had come to like it real quick and the added bonus on making his dick even bigger than previous had made it oh so tempting to get Twilight involved while they were at school, but he had managed to keep it together on advice from Aphrodite.

A week had gone by since his life changed, and it was amazing. The magic in the bell had pretty much gotten full, and with Twilight sending him fresh pics of her body during the days helped keep him in a strong state of ready to breed. Which was a bit awkward when he actually needed to go to bed.

But in that time, he had been planning; working out details for his plan to bring in Twilight's friends into the mix. With the help of Aphrodite, he had gotten a better grasp on his magic, feeling like a true extension of himself. Levitation, shapeshifting, protection, magical beams, slight mind manipulation, and his personal favorite being the power to make someone extra sensitive. The last one he had practiced on Twilight for a full day to see how strong it was. Suffice to say, she had to stay home one of those days given she couldn't focus on anything else except touching herself over and over again, hardly able to even walk out of her own room.

He looked down and grinned at Twilight, said egghead making loud slurping sounds as she bobbed her head up and down his girth, eyes closed with her focusing solely on tasting and lathering his girth up with her saliva. "Taste good Twilight?"

"Mmmhmm~" she let out, nodding without removing her head as he patted her head, making her move even faster at the motivation.

Rumble groaned at her tongue licking up and across the tip. "Y-You're a natural at this."

'I have to be if I want any of your cum~' she thought, mindful not to touch herself given she wasn't told to.

Rumble panted at her technique, before feeling a lightbulb go off in his head. Looking over to some of the toys on the floor, courtesy of him transforming a few books to help spice things up, he spotted a fat black dildo and got an idea. Raising his hand out, it glowed purple before an aura covered the dildo and the toy started to rise up. He brought it over down behind Twilight, the girl unaware of it as he grew a devious smirk. The toy hovered down near her soaking wet folds.

Twilight felt her mind swimming in ecstasy the more she sucked on Rumble's girth. She was aching for him to cum so she could taste his sperm and would go nuts if she didn't get it soon. But that's when she snapped out of it when she felt something rub near her pussy. She looked up at Rumble who had a big smirk.

"What's wrong Twilight? I just wanna make sure you don't let the toys gather dust. Besides, I'll bet you're begging for something fat to stuff you, aren't you? Let me fix that."

Her eyes widened as he grabbed her hair and roughly slammed her mouth over his dick with a grunt, right as the toy came careening right into her pussy without warning. She moaned out loud over the girth, her pussy clenching around the dildo as Rumble gritted his teeth from the sudden vacuum feeling over his dick.

"Here you go! Drink up!" he roared out as his dick twitched and started spewing fresh hot cum right into her mouth and down her throat while Twilight herself moaned due to her own body hitting it's peak and started spraying her juices all over the dildo.

'Yes! Feed me Rumble!' she cried in her mind, eagerly relaxing her throat to let the sperm rush down into her stomach. Feeling it pooling in her body made her feel better than the last few times she tasted his hot loads.

Rumble let his body fall back on the bed, trying to catch his breath as Twilight kept her mouth over his dick. "Phew, that was…great."

'Aww, is someone tired?' teased Aphrodite.

'Hell no, I just wanna give Twilight a moment.' he responded, looking down at her before sitting up using his elbows. "Twilight, get off."

She let out a hum and slid her mouth off, making sure not to let any extra sperm fall out and licked her lips with a hum and smile. "Mmm, it tastes so good~"

He felt his face heat up, seeing her expression still looking beautiful after all this time. "Well, make sure my cock is clean all over." he ordered her softly.

"Yes Rumble~" she purred with half lidded eyes, sticking her tongue out as she began licking up and down around his dick, moaning at any residue leftover with Rumble sighing at the sensation.

"Fuck! You know where to touch." he let out, raising his hand as he held a connection with the toy and began to make it push and pull back out of her. She moaned in response, but kept on licking his dick without breaking her stride. "M-Make sure it shines."

'Of course~' she dragged her tongue down to his balls, licking across the huge orbs as Rumble gritted his teeth, having to bite back a huge groan in response.

'Just imagine what she'd look like with your balls over her face. I'll bet your smell would make her play with herself in her sleep~'

Rumble looked up in thought, briefly imaging the scene before his dick suddenly sprang at full mass at the ready. 'Wow! You think I should try that later?'

'I think she'd love that~'

Rumble gave his wrist a twist, causing the dildo to spin around as it slid in and out of her sopping wet snatch. Hearing Twilight moan as she started to suck and lick on his balls together was driving him up the wall and tempting him to say fuck it and just tear into her ass, but he had to control himself and give her some slack. Besides, they still needed to work out the plan.

'Make sure you don't tease her too much now.'

"T-Twilight, hold on." he ordered, making her pull back as he took a sec to catch his breath. "Alright, we…we need to go over what we talked about."

"You mean the idea where you wanted me to get different outfits to try roleplaying?"

"No, I mean the plan involving your friends." he clarified.

"Oh, oops." she gave a bashful smile of embarrassment. "Slipped my mind."

"Alright, so what can you tell me about them? What are they up to this weekend?"

"Well, Rarity told me that she wants me to model some new clothes of hers. She thinks it might help me with my self esteem." she replied while keeping a hand on Rumble's dick. "The way she told me made me think she made them a bit risque."

"So no sneak peaks?"

"No." she shook her head before looking curious. "Do you want me to call her?"

"Maybe, tell me about the rest first."

'Oooh, I wonder if any of them are more revealing than togas.' chuckled Aphrodite.

"Well Sunset Shimmer is gonna be staying home the whole weekend for a video game stream she's been planning for months."

'I would prefer a nice long massage, those video games seem less fun than physical contact.'

'Hey! I love video games!' he thought back with a frown.

"Applejack is out of town because of a family reunion, so she won't be back till monday." Twilight continued while counting down with her fingers. "Fluttershy is going to an animal rights convention, Pinkie Pie is spending time with her sister Maud for some sisterly bonding, and Rainbow Dash has a soccer game that she needs to practice for."

'Her friends never cease to amaze me with how so much different they are, you'd imagine they wouldn't be friends with how jarring it is.'

'That's what makes them stick out so much.' he thought, holding a hand to his chin as he looked up in thought. "It'd be easier if they didn't have anything going on, but I can still work around this."

'Of course you can; after all keep in mind, there's no set time limit so even if it took months, you could get them no problem.' remarked Aphrodite with a seductive undertone. 'You just need to figure out who you'll sink your teeth into next~'

'Well, if I had to pick? Rarity.' he gave a goofy grin. 'She's really popular when it comes to making clothes and she's really pretty. Lots of guys have tried asking her out, including my brother.'

'My my, and I'll bet you've checked her out while having a crush on Twilight~' teased the alicorn.

"Did not!" he let out, making Twilight jump.

"Did not what?" she asked, making Rumble blush in embarrassment and hold up a hand.

"N-Nothing, it's nothing."

She looked at him in confusion as he heard Aphrodite giggle.

'Not funny.' he thought in a grumble before shaking his head. "Ok, so I'll start with Rarity; you can invite her over for modeling some dresses and that's when I make my move. After her it can be Sunset. If she's just gonna stay home then it'll save time."

"Fair point." admitted Twilight, albeit with a hesitate look to her eyes as she looked to the side. "So…how fast are you going to try and bring them in? I mean, the sooner the better I'd imagine, but there's no real rush, right? You could stuff my asshole again if you'd like." she quickly offered up with a smile. "Or would you prefer a boobjob?"

'Hmmm, sounds like someone might be jealous.' chuckled Aphrodite.

'Jealous? Why?' he questioned in confusion.

'Think about it: You want to include lots and lots of other girls, right?'

'Well duh.'

'And she was the first one you went to, right?'

'Can you just tell me where this is going? I'm lost.'

'Ah, still a child at heart. She's concerned you might get bored with her and forget about her in favor of her friends or more new faces. After all, you DID blow her mind and made her feel the joys of pleasure. That's not something anyone else can easily say, so she couldn't just up and find some other male who could do what you did, especially one without magic.'

Feeling the dots finally click together, his eyes widened before looking at Twilight who had kept quiet. "Twilight? Are you…jealous of the plan?"

"W-What?!" she blushed and held up her hands. "T-That's crazy! I'm not jealous. I'm happy, really!"

'Lying~' sang Aphrodite as Rumble looked concerned with Twilight trying to give a reassuring smile, and failing.

"Twilight, are you worried about being replaced? Be honest."

"Really, it's fine. I'm not…jealous…" she trailed off before finding her face facing Rumble's who held a serious expression.

"Look, just because more girls are gonna get involved doesn't change the fact that you came before anyone else. I won't ignore you for anyone else, I promise." he spoke clearly without breaking eye contact.

Twilight went silent, letting the words sink in. Her eyes briefly looked down before glancing back at him. "Promise?"

"I promise." he smiled. "You'll always be my princess and mistress to every other girl involved, and that won't change, ever."

Twilight's eyes started to glisten as small tears rose up, making him feel like he said something wrong before suddenly finding his head pulled down into a sudden kiss by Twilight who held him there and closed her eyes.

'Awww, guess your princess wanted her prince to make it official~'

Rumble's face turned red at the move, but he responded with wrapping his arms around her to hold her close and heard her moan the longer they held it, feeling their tongues roll and lick across the other.

They focused on the sensation of their tongues and held each other close for a little bit before breaking away, both panting with a strand of saliva between their tongues.

"Do you…trust me?" panted Rumble, making Twilight nod and give a bright smile.

"I do, and I promise to be the best princess you want."

"I know you will." he pecked her on the lips while Aphrodite gushed.

'Awwww, you two are precious. Make sure you give that kind of affection with other girls~'

'Already planned on it.' he responded as Twilight took a seat beside him. He looked up in thought as a curious question came. "Say Twilight, do you know if Rarity has any kinks? Like, something she told you she wouldn't tell anyone else?"

"Well, she did let it slip out during a sleepover. Me and the girls were playing truth-or-dare, and when Rainbow Dash asked her, she didn't want to say, but Pinkie got it out of her. Turns out she secretly gets off on tentacles."

"Tentacles?" he looked confused.

'Oooh, I've been there. Ahh, I found out why so many mares had a fetish for those when I went on a trip to the beach. Those can cover EVERYWHERE at once, I even had a temple made near it~' giggled Aphrodite.

"You mean like the kinds from anime?"

"Well technically she got interested in them from these special kinds. I think they're called 'hentai'."

"Oh! I've…heard of them." he let out, making Aphrodite burst out laughing in his head.

'Oh you've done more than heard of them Rumble~'

'It's not my fault! They're…just very thorough!'

'Well you don't need them now.' Aphrodite remarked before holding a hoof to her chin. 'Hmm, you could use this.'

'What do you mean?'

'Think about it; you can shift your body to young and older, right? Well, you could use a spell from the bell to allow sexual fantasies to become reality.'

'Really?! That's amazing!' he perked up. 'Wait, why didn't you say something sooner?'

'You were having so much fun, I didn't think you cared.'

Rumble gave a deadpan look, confusing Twilight as she watched him in silence as he had the interior conversation.

'But with this info, you can make good use of it. You could give this Rarity her best wet dream come true, and who else to practice on then your dear Twilight?'

He slowly grew a grin on his face before turning to Twilight and put his hands on her shoulders. "Twilight, I need you to help me with something."

"Sure Rumble, whatever you need." she smiled as he stood up.

"Ok, don't freak out, this is gonna be new for me." he closed his eyes as his hands glowed with magic before the aura moved up his arms and spread across his body. His form began to slowly glow purple before his features vanished and left him as a faceless figure. His arms and legs started to stretch out, the ends splitting apart and turning into multiple limbs with his head stretching up.

Twilight's eyes widened as she had to tilt her head up, her form covered in the shadow of Rumble who kept growing and shifting until he reached the ceiling. The glow on him vanished with Twilight's jaw dropping. "R..Rumble?"

"Mmm, woah, I feel…weird." he let out in a slightly guttural tone. His form had completely turned. What was in his space was a huge purple skinned gelatinous creature with numerous squirming slimy tentacles around his body. Rising from the top was a lone eyestalk that blinked and looked around. The tentacles seemed to be covered in a mucus substance with the size taking up the whole bed and spread out onto the floor. "Holy cow! Everything looks different!"

'That's what happens when you have just one eye.'

He looked down at his tendrils, raising two of them up to look them over. Seeing how slimy they looked made him shiver, but at the same time the sensation of moving more than two limbs was amazing. He made several of them wiggle at once, then one at a time, then all together. 'Woah, is this what squids feel like?'

'Maybe ignore the shellfish and take a look at your girlfriend~'

Rumble's eye looked at Twilight whose jaw hung open as she stared at him, making him stare at her while realizing the size difference between them. He was easily three times her size on height alone, not counting the width. He gave a grin in his mind and leaned down closer. "See something you like Twilight?"

"Oh! S-Sorry! I just…I'm just…stunned." she let out, adjusting her glasses while staring at the slimy limbs. "How are you feeling?"

"It's a bit weird, but pretty good too. In fact…" he narrowed his eye at her before raising up a tendril, shooting it out and wrapped it around her waist and lifted her up with ease, making her let out a startled yelp. "Why don't we take it for a test ride?"

Twilight felt her pussy throb at the tone, the dildo inside still inside before several tendrils lashed out and wrapped around her ankles and wrists, spreading her limbs out. She felt her breath grow heavy as Rumble's eye roamed over her body, unable to cover herself as he gave a lecherous gaze.

"Now I see why those monsters are so horny, this is pretty hot." he let out, his eye looking down at her breasts before a pair of tentacles slid up across her legs and stomach, making her gasp at the slime before moaning when they coiled around and squeezed her breasts, sliding across the mounds and hard nipples.

"AHHHH~!" she threw her head back, the mucus making the limbs smoothly go over her tits without issue.

'Oooh, you're taking to this like a natural, maybe you were secretly a squid in a past life.'

Rumble didn't respond, his focus being on Twilight's breasts as he felt his body act on instinct he didn't know he had. He trailed another one around her thigh, squeezing it as the tip raised in front of her face. The tip seemed to leak out the mucus before it pushed itself into her mouth, making her let out a muffled cry of surprise. He felt his body burn up from the sensation of her mouth, feeling like she was choking on his own dick.

'Oh god yes!' thought Twilight, the tentacles brushing across her nipples faster as they squeezed her breasts while feeling the one in her mouth sliding down deeper, her throat expanding out as a result. Her body was getting more sensitive before feeling two more start rubbing across her ass and pussy.

"We don't need this." Rumble grabbed the dildo and pulled it out, Twilight moaning from the sudden removal before feeling the tendril rub across her slit, smearing mucus across it. The other one lightly prodded at her anus, the mucus covering the entrance and making Twilight shudder. "Why let a toy get all the fun? I'm gonna stuff you like a thanksgiving turkey."

'Oooh, I don't know what a turkey is, but that sounds fun~'

'Just watch and learn.' Rumble rubbed the tendrils against her two holes together before pushing inside, the anus needing a bit more effort.

Twilight tensed up and shivered in his grip, feeling both her pussy and ass getting filled up was WAY different than a regular dildo. The cold and slimy sensation moving inside was foreign to her, but that just made it more exciting. It was like she was getting gangbanged by three Rumbles at once.

Rumble kept pushing his tendrils deeper and deeper, forming a bulge in her body before stopping. He slowly pulled them back with just the tip in her before he started to suddenly go full force. The sensation of her throat, pussy, and ass all at the same time was making his own mind go wild. All he could focus on was stuffing her senseless and wanting to fill her over and over.

Aphrodite was noticing the state of his mind and kept quiet, just sitting down and watching the fun while drinking from a goblet.

"How does it feel Twilight? To get fucked by a monster? I'll bet it feels better than anything we've done!" he grunted, adjusting her position to make her parallel to the ground, watching his tendrils piston in and out of her as she moaned louder and louder around his tentacle stuffing her throat.

'It's amazing! Amazing! My body is on fire!' her body squeezed harder on the girths, her body desperate to take them in as much and far as possible. The slime made them slick and so easy to move, there was hardly any friction to slow them down.

Rumble let out a low guttural growl, his limbs inside her feeling a build up racing to the ends. "I'm gonna cum! I'll flood your insides and fill you like a balloon!"

'Yes! Yes! YES!' she thought before the tendrils twitched and she suddenly felt three gushes of sperm filling her holes at the exact moment with intense pressure behind them. Her belly expanded as the sperm hit her stomach from two angles, and her pussy got completely flooded. The amount was so great, it was leaking out over the tendrils as he stayed inside her.

'Ooooh! So this is what a turkey looks like.' remarked Aphrodite as Rumble let out what sounded like panting, awkward mind you given his lack of mouth, and stared at Twilight's fucked silly look with her tongue hanging out as her eyes were rolled up into her head.

'I…want…more. I'm not done yet. I wanna REALLY try something.' he thought with a devious chuckle in his mind. He raised another tendril up towards her pussy, but stopped it and pulled the one in her snatch out, making her moan as it caused the sperm to leak out. He brought the two tendrils against the other before coiling them around each other, forming a spiral shape with the two before bringing it to the folds and pushed it inside. Twilight cried out from the extra snug fit, her tongue swirling around the tendril in her mouth as she was desperate to get more.

'My pussy feels so good! I want to drown in his sperm!'

Rumble kept pushing the coiled tendrils inside before stopping and began to spin them downward to pull them back to a point, then spun them in the opposite direction back inside, pushing the sperm deeper as a result. The tendrils were coming in and out of her, essentially drilling into her back and forth.

'Try to show some restraint, or you might break her mind. Do that and all she'll want is tentacles~' joked Aphrodite.

'It's hard not to! I feel incredible! I-I'm gonna cum again!' he thought back, thrusting the tendrils in and out of her faster and harder, Twilight crying out which caused the vibrations hitting the tendril in her mouth to twitch. He closed his eyestalk and let out a growl, another strong rush of semen shooting into her throat, stomach, and pussy.

Her belly engorged even further, her mind burning as she hit her orgasm again and squeezed the tendrils, desperate and eager to try and milk them for all their worth.

Rumble himself felt a bit winded, more so than the other times the two went at it, and chalked it up to changing form and the intense rush of pleasure that came from fucking three holes at once. He carefully lowered her down onto her back, let go of her limbs, and retracted his tendrils from her holes. She gasped and panted for air, her legs twitching as his sperm seeped out onto the floor, pooling into a large puddle.

'Might wanna clean that up before it stains.'

Rumble took a moment to catch his breath and used the magic to reduce his body back to it's normal age. He plopped down on the bed, feeling his body slowly trying to refresh itself thanks to the bell. He raised his hand up, zapping the puddle of sperm on the floor and causing it to slowly vanish from the spot. Albeit with the magic making him feel like he just ran a marathon, twice.

Twilight herself just stayed where she was to rest and calm down, closing her eyes as the two decided to take a little nap.

(Later)

'So Rumble, how did it feel going wild like a real monster? With all the sperm you poured in Twilight, maybe she'll get knocked up~' teased Aphrodite as he and Twilight were trying to get dressed, feeling more rejuvenated, especially with the bell filled up to the top.

'S-Shut up.' he replied, his cheeks flushing red as she giggled. 'There's no way it'll happen. I'll just use a spell and clean it up again.'

'If you say so~'

Shaking his head to stay focused, he waved his hand as a small cloud blew over the two, ridding themselves of any leftover scent they may have on them and looked at Twilight who finished texting a message on her phone and smiled at him.

"Alright, everything's set up."

"Alright, you did what now?" he asked, wanting to hear her tell him exactly what she did to be sure.

"I texted Rarity and told her I'd be over to model for her, and she was really excited to hear."

"Then?"

"I told her you'd be coming with because I'm tutoring you and your brother really wanted me to make sure you were all caught up."

"And her response?"

"She's perfectly fine with it, she said it would work out for her since she needs someone to give Sweetie Belle company."

"Really now?" his grin grew hearing that as the two left his home. "That makes things even better~"

'I'll say, what's better than seducing one glamorous girl? Seducing her and her little sister together~' giggled Aphrodite. 'Ahh, I wonder how long it takes before they're fighting each other over your dick? I give it ten minutes.'

'After that crazy trip under my belt? Easy as pie.' he thought, walking behind Twilight and giving her ass a rub, making her shiver and smile with a blush. He leaned behind her ear and blew into it, making her gasp. "You ready to get things started? Because when we start with Rarity? There's NO going back."

"A-A-As long as I'm still your princess, I'll get you as many girls as you want." she promised with a smile.

He smiled and pecked her on the cheek. "That's my girl."

'Awwww, how precious~'