Author's Note

And here it is, the last chapter, hope you all enjoy it.

Bonus Chapter

The sun had slowly risen and its light had begun to shine onto Canterlot City. From within the apartment of Sunset Shimmer, Yabuki was fast asleep in Sunset’s bed. Thankfully it was Sunday, so no one would question anything. The rays of the sun shone from outside the window, then to Yabuki, making him groan as he was a bit uncomfortable from the rays of the sun.

“Five more minutes.” Mumbled Yabuki. Then he said “I just had the strangest dream that Sunset wanted to experience the same thing Twilight did, but she also wanted Adagio to try this too.”

He suddenly felt something wrapped around him. When he looked around, he saw that both Twilight and Sunset were clinging onto him from both sides, with Adagio having her arms wrapped around sunset, but also tried to reach out for Yabuki, with smiles on all three of the girls” faces.

“Okay then,” said Yabuki as he realized something “It wasn’t a dream.”

The three girls were stirred awake when they heard something.

‘did something happen last night?” asked Twilight.

“I dreamt that we had sex of a lifetime.” Said Adagio.

“Yeah, and I asked Yabuki because we wanted to experience what you felt.” Said Sunset.

“Uh, ladies?” asked Yabuki.

The three looked at him and were surprised to see him, which also caused the said girls to blush.

“Oh,” said a blushing Sunset “It wasn’t a dream.”

“Pretty much, yeah.” Said Yabuki.

‘still,” said Adagio whilst she used her finger to stroke Yabuki’s chest “You have to admit, it was quite amazing.”

“Agree with you on that one.” Said Sunset as she had a moment to cuddle him.

‘still,” said Twilight with a slight yawn and stretching her arms before she put her glasses back on whilst sitting up and using her blanket to cover herself ‘thankfully the patches and cameras were able to get the data we needed. And we’ll even figure out why Yabuki was the only one who caused our…”

“Horny magic to go haywire?” joked Yabuki, causing the said girls to look at him with flexed eyebrows. “Well you got any better names?”

“I can dig it.” Said Adagio.

‘same.” Said Sunset.

“Fine.” Said Twilight whilst rolling her eyes, having no choice but to accept it.

“So, before we contemplate on notes of what happened?” said Yabuki ‘mind if we take a shower and make some coffee?”

‘sure, I could go for some.” Said Twilight.

“The cups, coffee and sugar are just right above the kitchen sink.” Said Sunset.

“Thanks,” said Yabuki “I’ll prepare the coffee and breakfast whilst you guys take a shower.”

“You do that,” said Adagio, who then smirked and said “And we may be going in a different direction when it comes to one’s attire.”

“Uh, sure.” Said Yabuki.

But just as he stood up, he felt a slight slap on his posterior. Making him yelp and sat down, making him look back and saw the smirk on her face, revealing the guilty party.

“Better get moving handsome.” Said Adagio.

Yabuki nodded and moved on, but then he groaned a bit whilst holding his privates.

“You okay there?” asked Sunset.

‘still trying to recover from last night,” said Yabuki, then looked at them and said “You girls really know how to take it to the next level.”

The said girls blushed in embarrassment for a bit before Yabuki moved. However, Adagio noticed that Twilight was looking at her sternly.

“What?” said Sunset when she noticed too.

“Are you jealous?” said Adagio.

“No.” denied Twilight. Then she pouted whilst crossing her arms and said “I wanted to do that. He’s, my hubby.”

Sunset snickered loudly and said “That’s the first time I’ve ever heard you say something like that.”

“Oh be quiet and let’s get cleaned up.” Said Twilight before she and the others got up.

*************************************************************************************************

Shortly after their showers, Adagio, Sunset and Twilight, seeing that they were alone, decided to walk around the apartment whilst wearing nothing but bras and panties just to move around freely. Thankfully, after they were done, Yabuki had made them breakfast. As they at their pancakes and drank their coffee, the three girls tried to pass the time.

Both Twilight and Sunset decided to go through their notes and data whilst they were eating a pancake or two whilst drinking their coffees, with Adagio sitting on the couch and drank her coffee too whilst she was reading a book.

She placed the cup down and looked at the others whilst saying “So did you figure out why we changed when Yabuki had sex with us?”

“Almost,” said Twilight whilst readjusting her glasses whilst looking at Adagio “After going over the notes, data and footage, we think we may have figured out why this keeps happening.”

“We also may have figured out how our magic keeps on reacting this way and why we kept transforming.” Said Sunset.

“Even me?” asked Adagio.

“Especially you too.” Said Twilight “Which is why we made the device to help tune in our magic to test our theory.”

“As long as you two don’t turn yourselves into monsters again.” Said Adagio with a smirk, making the two girls groan.

They suddenly heard a knock on the door, with the said girls looking.

“Who is it?” asked Twilight.

“It’s none other than Fluttershy, Applejack, Rarity, Rainbow Dash, Aria Blaze, Sonata Dusk and the one and only Pinkie Pie!!” exclaimed a certain party girl.

“What are they…” asked Twilight before she was cut off when Sunset face palmed herself.

“Oh, no I forgot, it’s Sunday.” Said Sunset “We always hang out on a Sunday when we have a free day.”

Adagio simply smirked and said out loud “It’s open!!”

Sunset and Twilight looked at Adagio in shock as Twilight blushed madly and said “Are you crazy?!”

“We’re not even dressed yet!!” said Sunset.

At the same time, the rest of the Rainbooms and Dazzlings walked in.

“Sorry we’re late.” Said Rarity whilst rolling her eyes “Somebody decided to sleep in.”

‘make that two somebodies.” Said Aria whilst rolling her eyes and motioned to Sonata.

“Come on Rarity, it’s Sunday.” Said Rainbow.

“For realsies.” Said Sonata “Nothing happens on a Sunday.”

“Rainbow,” said Applejack “Ya’ll know that we always come together on a Sunday every week at our places. And Sunset’s next.”

“Yeah, we even arranged it.” Said Pinkie.

“And we always try to make sure that we have a free day.” Said Fluttershy.

“So,” said Rainbow “What’s been hap…?”

Rainbow was cut off as she and the others, with wide eyes, surprise and some blushes, saw Sunset, Twilight and Adagio half naked, with Adagio casually waving at them and both the Rainbooms were greatly embarrassed about it. Fluttershy made an “eep” sound and covered her eyes, with other others clearly embarrassed.

“Goodness,” said Rarity as she held her fingers close to her chin “Whatever happened to you three?”

“Uh, I’m not sure I want to know.” Said Rainbow.

Sunset and Twilight giggled sheepishly, with Twilight saying “It’s a long story.”

‘did you guys have a party last night?” asked Pinkie Pie.

“Not exactly.” Said Sunset whilst rubbing the back of her head.

“What happened?” asked Applejack suspiciously.

When all of a sudden, the bathroom door opened and out came Yabuki as he was wearing nothing whilst using a towel to dry his head.

“Hey girls, sorry I took so long in the shower,” said Yabuki “I hope you were able to save some for…”

But he was cut off the moment he saw the rest of the Rainbooms and Dazzlings, much to his shock. The said girls were all looking at him with mad blushing faces and widened eyes. Yabuki now felt embarrassed about it and said “Well…this is awkward.”

“Uh, understatement.” Said Aria.

“Could someone explain what in tarnation is going on?” asked Applejack.

Sunset groans and said “We’ll explain. After we get dressed.”

**********************************************************************************************************

One complicated recap later

“So let’s get this straight.” Said Applejack, trying to process this with the others. “Sunset asked Yabuki to take Twilight out on a date for Valentine’s Day.”

“Then Twilight had sex with Yabuki, she suddenly grew into an adult and was in the same height as Principle Cadance.” Said Rainbow Dash.

“Then Sunset came and asked if she could experience this too.” Said Rarity.

“But Sunset also wanted Yabuki and Adagio to bury the hatchet and move on.” Said Fluttershy.

“You four hung out and had an amazingly amazing bond at your fun times.” Said Pinkie Pie before she made a squee sound.

“And when you lot had sex with him, you experience bodily growths and experimented on yourselves just to see how it reacted.”

“That’s…pretty much it.” Said Sunset with a sheepish smile as she, Twilight and Adagio were wearing robes instead of wanting to get dressed, same with Yabuki.

“Normally we wouldn’t believe any of you,” said Sonata “But after showing us the footage of what you guys did, we believe it.”

“I simply cannot believe you lot went through all of that.” Said Rarity.

“Yeah, how the heck did you guys transform in the first place?” asked Rainbow Dash.

“Well we were able to get an answer to that.” Said Sunset before Twilight picked up the notes and told them in ways she could understand.

“Whenever we get pleasured, we tend to be stimulant during those sessions, correct?” asked Twilight, which the others nodded, remembering health class. “Well according to this, whenever we get stimulant, we’re find. But somehow, combined with our Equestrian Magic, it somehow affected our bodies, causing certain growths to happen.”

“You mean kind of like Saddle-Rager?” said Pinkie.

‘minus the turning rampaging monster and crushing everything before them and instead turning them into beautiful women that any would like to pleasure?” said Sonata.

“Pretty much it, yeah.” Said Twilight.

“We thought it would only work for us, considering we wear our geodes.” Said Sunset.

“But somehow it affected me too.” Said Adagio.

“Really Dagi?” asked Sonata surprised.

“How’s that possible?” asked Aria.

“Well considering that your sirens and your magic is strong,” said Twilight “It’s possible that all of your magic still resides within you, and that all of your magic still reacts to anyone who comes into close proximity of it.”

“But one thing that puzzles me.” Said Rainbow.

‘doesn’t everything,” teased Applejack, making Rainbow glare at him, with her saying “How come Twilight didn’t transform when Sunset tried to stimulate her?”

“I was just getting to that.” Said Twilight “Just to be sure, I also placed patches on Yabuki for just in case.”

“You did?” said a confused Yabuki “How?”

“I uh…” said Sunset as she rubbed the back of her head ‘might have placed some patches on you too when we were making out.”

“So that’s what the strange feeling I felt on my back,” muttered Yabuki, then he looked at Twilight and said with a flexed eyebrow “And really?”

“I just wanted to make sure.” Said Twilight as she tried to reassure him. Then she looked back at the others and said “Anyway, when we tried to stimulate each other, somehow it wasn’t working, but when he did it to us, it somehow worked, so Sunset and I looked over our notes whilst Yabuki took a shower.”

“And after going through this, we found out how our magic acted up and how only Yabuki affected us.”

‘maybe because he’s a special lovable boy?” said Pinkie Pie, which Yabuki couldn’t help but blush and feel flattered.

“Well, that,” said Twilight “And also another major realization.”

“And that realization…,” said Sunset.

At the same time, both Sunset and Twilight pointed at Yabuki and both of them said out loud “Yabuki has Equestrian Magic.”

Everyone was dead silent on this, with widened eyes and dropped jaws, even the certain individual as he couldn’t believe what he was hearing.

“Wait…what?” said Yabuki slowly “I’m sorry but…WHHAAAAAAAAAATTTTTT?!!”

“How is that possible?!” exclaimed Rarity.

‘simple,” said Sunset “remember that video he did about helpful tips online?”

“Oh, about how to write better stories and did those audio stories about our Equestrian Counterparts?” said Fluttershy.

Yabuki was taken aback by this and said “Wait…you guys…actually listened to that?”

“Well duh dude,” said a smirking Rainbow “We never missed your videos. You did a ton of things for us, so it’s only fair that we do the same for you.”

“Yeah,” said Pinkie “I always wanted to do an audio video about our counterparts.”

Yabuki felt really touched by this and said “Aw, you guys.”

“Anyway,” said Twilight “After that, when we looked his video, I saw something that immediately caught my attention.”

Twilight showed them the one video that he did about Pony Applejack’s parents, which Applejack remembered fondly. They saw he was partially asleep, making them realize that he must’ve worked overnight. But what caught their attention, was a glimpse of Rainbow magic flying towards him, taking them, even Yabuki by surprise. The magic flew right into his mouth, giving him a rainbow glow, but then he suddenly burped himself awake and sat up and continued.

They looked at him puzzled as Adagio asked “You burp in your sleep?”

“A habit I’m trying to get rid of.” Muttered Yabuki as he walked over to Twilight’s machine to take a look at it.

“How come that looks different from any other Equestrian Magic?” asked Applejack.

“Apparently when others get infected with Equestrian magic, they were individuals.” Said Twilight.

“But from what Princess Twilight told me,” said Sunset “Our geodes combined with our magic, came from the Elements of Harmony. So it’s possible that the Equestrian Magic somehow chose Yabuki because he also represents the elements.”

The others pondered about this…

“Well, he’s always super honest.” Said Applejack.

“And he’s totally loyal.” Said Rainbow Dash.

“He’s very generous.” Said Rarity.

“He’s really sweet and kind.” Said Fluttershy.

“And he knows how to make others laugh and smile.” Said Pinkie Pie with her own bubbly personality.

As Yabuki looked at the device over, Aria asked “So how are you guys going to get it out of him?”

“Yeah,” said Sonata “It’s not like it’s some artifact or a common item that was infected with Equestrian Magic, so how are you going to get rid of it?”

“Well it doesn’t seem to be doing anything.” said Sunset.

“Other than giving you three a good time?” teased Rainbow with a smirk, causing the three said girls to blush at this.

“But we should still be keeping an eye on him just in case.” Said Twilight.

“I’ll write to Princess Twilight and ask her to come over, maybe she can help.” Said Sunset.

“Uh, what’s this device?” said Yabuki as he pointed at tit.

“Oh,” said Sunset as she explained ‘seeing that we know what we look like in Equestria, the device allows it to detect anyone’s magical signature, allowing the magic inside of us to activate that would have an effect on our bodies.”

“Like gaining our pony ups.” Said Twilight.

“Huh, interesting.” Said Yabuki as he observed the device.

Pinkie, after overhearing it, ended up appearing next to him, because when she saw a big red button, she felt drawn to it.

“Ooh, what’s this button do.” Said Pinkie Pie.

“Pinkie don’t…!!!” shouted Twilight.

But it was too late, the moment Pinkie activated the device, it caused to hum and beep at the same time, causing some to be concerned. It suddenly detected the girls in the room, whilst showing images of them on the screen. It began to detect them and energy levels begin to rise, as if it were homing on their signals.

The girls in the room, suddenly begin to feel hot.

“Uh, is it me or is it feeling hot in here?” said Applejack whilst fanning herself with her hat.

“I feel funny,” said Sonata “in a good way that is.”

“Uh, what’s happening?” said Aria, not feeling so well.

Adagio, Sunset and Twilight felt it too, until they realized what this means. They gasped and quickly went over to the girls and undressed them all until all of them were wearing only their underwear, making Yabuki widened his eyes in shock.

“I wanted to see a ton of things in my lifetime,” thought Yabuki within his own thoughts “But this isn’t what I had in mind.”

Soon, the girls were all in their underwear. But whilst they were squirming and feeling hot and bothered, the girls were still flustered by what they did.

“Eep!!” yelped Fluttershy when she covered herself.

“Why did you do that?!” shouted Rainbow, feeling the same way.

“This is uncouth, even by your standards!!” shouted Rarity.

“Trust me.” Said Twilight as she felt hot and bothered.

“You’ll thank us for this later.” Said Sunset.

Suddenly, they all yelped whilst some wrapped their arms around themselves whilst they began to shiver and shudder and tremble whilst trying to contain themselves. Before Yabuki’s eyes, they began to grow. Soon all of them were as tall as Principle Cadance, Principle Celestia and Vice-Principle Luna, with each having the same butt and breast size. Yabuki himself felt surprised by this.

After their sudden changes, they looked at one another and themselves surprised.

“Whoa,” said Rainbow Dash but in a different voice “This is new.”

“Hey, you sound different,” said Pinkie, then she gasped and said “So do I.”

“What in the hay just happened?” said Applejack with her own alluring country voice.

‘twilight, what happened?” said Rarity.

“Well, see the device has the ability to control our magic remotely.” Said Twilight. “But what happened to us was due to the energy bleed.”

“Energy bleed?” said Fluttershy as she was slowly stroking her body, which Yabuki found hot and alluring.

“When I tried to see how your magic worked the first time before the Friendship Games,” said Sunset “I was close to our own magic signal when we first experienced it, so when our energy moves away from our resonance, it moves through that frequency too.”

“Right,” said Twilight when she remembered what Sunset told her about “When we transformed, all of our energy got switched into our pony connections, but it also decayed and dispersed. Neutralizing back into ambient energy.”

“So it did just leave us, it shifted away from our ability to absorb all of it like we did before,” said Sunset “So it no doubt hit a wavelength. Our energy can’t be created or destroyed, it can only be converted.”

“So now every time whenever we feel this kind of energy when we get hot and bothered, we end up transforming into this?” said Rainbow as she looked over her body. “I’m beginning to like this.”

“Although,” said Rarity as she looked at herself “Not at the cost of our own outfits.”

Yabuki suddenly felt dizzy and hot too, making him lean against the machine.

“Uh, girls,” said Yabuki, gaining their attention whilst he said “I feel a bit off…”

His body also suddenly begins to shiver. He suddenly began to grow too. He was just an inch taller than the girls, but what surprised them the moment his robe fell off, was that his muscles had also grown a bit, much to their surprise. Yabuki looked down, thank goodness he has his underwear on.

“Whoa.” said the girls as they couldn’t believe what they’re seeing.

“What the heck happened?” said Sunset.

Twilight pondered this and said “It could be possible that seeing that the Equestrian magic in him is the same as ours, his body must’ve also been affected like ours. Hence the change.”

“Hmm,” said Fluttershy as she suddenly blushed “A really big change.”

The rest of the girls couldn’t help but feel allured to him at this moment. His well-toned body, his muscles, they couldn’t help but fawn over it. Pretty soon, all of the girls in the room had half lidded bedroom eyes, making Yabuki nervous.

“Uh, girls?” said Yabuki, “What are you doing?”

They then walked over to him as Rarity said “Oh, nothing much darling.”

“We just wanna have a good look at you.” Said Fluttershy.

‘see what makes you tick.” Said Applejack.

“And why you’re so awesome.” Said Rainbow Dash.

“And want to have some fun with.” Said Pinkie Pie.

“And with a body like that, big boy?” said Aria.

“We’re sure to find out how long you can last?” said Sonata.

Adagio stood on his left and said “And besides…”

“We really love you.” Said Sunset.

Twilight stood in front of him and gave him a gentle kiss, then broke the kiss, smirked and said “And we want to show you just how much.”

They began to guide him towards the bed, as he thought to himself “This is going to be a long morning.”

***************************************************************************************************

Soon the morning was nearly over in half an hour, and the girls were all fast asleep whilst back to normal with smiles on their faces. Yabuki on the hand, was wide awake and on the bed, but then had a goofy smile on his face before he took a temporary nap.

“Best weekend ever.” Said Yabuki before he feel asleep the moment, he closed his eyes.