Equustale

by neorenamon

My Little Pony: Friendship is Magic is the intellectual property of Lauren Faust and DHX. Undertale is the intellectual property of Toby Fox. Blah blah blah. Thank you.

...

Frisk and Flowey made their way through the path to The Ruins. It hardly seemed like a year since the barrier was broken and the monsters were set free from the Underground, but now they were searching to make sure that every monster who wanted to leave the Underground was informed of their freedom. To give them to choice to stay or leave. It was almost unanimous: They wanted to move back to the human world. A world once shared by humans and monsters.

"Why am I stuck with you again?!" grumbled Flowey.

"Because everyone else had their own assignment," replied Frisk, "and Goat-Mom wouldn't let me come back down here alone."

"Great. I'm stuck as a human sitter..."

"I wish I was old enough for everyone to trust me on my own," Frisk replied under their breath.

"Yeah. You could be carrying a real gun instead of that unloaded antique," said Flowey as he looked down on the empty revolver sitting in it's holster.

"Well pardner, I reckon it's still good enough to scare any varmints we all come across," they replied in a faux cowboy accent and adjusted their cowboy hat.

"Feh! You are no cowboy!"

Frisk adjusted the backpack that Flowey was riding in. The flower was placed to the left hand side of the pack so he could see around Frisk's cowboy hat. He was in the upper part of the pack where he could be alone instead of sitting on all the supplies that Toriel packed for the two of them. While they would be in the Underground for a day at the most, she packed enough water for three days and enough prepackaged rations for a good week or so. Goat-Mom could be a tad overly cautious at times.

"This is where we first met," sighed Frisk as they came to the first chamber since returning to the Underground.

"Yeah," muttered Flowey, "and I gave you some pretty shitty advice back then too."

"In this world, it's KILL or BE KILLED," they replied in their best impersonation of the flower.

"Well you didn't listen to me, did you?"

Frisk shook their head 'no'.

"After all the times I tried to kill you, you still spared me didn't you?"

Frisk nodded and patted the flower on the head.

"Stop that!" he hissed, "I have no soul and can't feel love!" There was a pause before adding, "Not anymore."

"It's a shame that the artificial soul Alphys tried to implant in you didn't work."

"Well I for one wasn't holding my breath. After all, she created the amalgamates too, and look how well they turned out. Look how well I turned out. Maybe I would have been better off..."

Frisk put a hand over his mouth and scolded him saying, "Don't talk like that. You're never better off dead. Chara thought that by being dead, things would be better off and it wasn't."

"You came to the Underground fully expecting not to come back," he muttered once the hand was removed from his mouth, "That's pretty much the same as looking to die, isn't it?"

"Oh look, it's the passage where Goat-Mom told me to walk alone even though she was just hiding behind a pillar towards the end."

"Nice change of subject," he muttered softly.

"Where I met that odd Napstablook for the first time."

"A stellar character."

"Every monster is special in their own way," said Frisk as they walked down the path once more. This time, there was no Toriel to show them the way. It wasn't needed even a year later.

However, they were walking down the passage when the ground began to shake.

"An earthquake?!" asked Frisk, "Do those happen often?!"

"I've never experienced one in my lifetime," replied Flowey.

But the tremors passed quickly.

"Well that wasn't so bad," mumbled Frisk, "Let's keep going. I don't think we're in any danger."

"Didn't Smiley Trashbag say something about tremors the last time he came here?"

"In Snowden, but you really shouldn't talk about Sans like that."

"We don't always get along," grumbled the flower, "I mean he's the one who threatens me with 'dirt naps'."

"I think he's joking. You do live in a flowerpot full of soil, right? So technically each time you sleep, it's a 'dirt nap'."

"You like taking his side..."

Frisk stops.

"Are you even..."

"That breeze... It's strange... There shouldn't be a breeze in this part of the ruins."

"I guess not," muttered Flowey.

"Let's find where it's coming from. Perhaps a new route to the surface has opened."

"Like we could get that lucky," he grumbled.

They moved on until Frisk said, "The breeze seems to be coming from behind that pillar."

"The one Toriel hid behind while you walked the passage."

They moved to the pillar to see that the wall behind was partly collapsed leading into a natural passage neither of them had ever seen before. It was dark inside.

"Flowey," said Frisk, "Get me the miner's light that Goat-Mom packed for us. You didn't think we'd need that, did you?"

"Fine," he muttered as he pulled it out. It was a modern LED lamp lit by a small battery. He placed the lamp about the hat and secured it in place before turning it on.

Then the two of them made their way past the crumbled stones into the new passage.

"If this passage was walled over, then maybe it's not safe?" asked Flowey.

"Or perhaps they just didn't need the extra space?" suggested Frisk.

* Or maybe there's something in here that even monsters didn't want to deal with.

Frisk paused.

"What is it?" asked Flowey.

"I think that odd voice in my head... I can hear it again."

"Great. I can see therapy in your future..."

"Says Mister Kill or be Killed," replied Frisk.

"Better safe than sorry!"

"Well all the monsters in the Underground would be dead if I went by that philosophy."

"I never claimed I was perfect!" grumbled Flowey.

"The passage is too small from here to walk," noted Frisk, "I'll have to crawl. You'll have to keep your head down."

"I think I figured out that one all by myself, thanks."

So Frisk got on their hands and knees and began to crawl. Fortunately, Toriel insisted on full leather gloves as well as elbow and knee pads for the human.

"The wind is definitely coming from somewhere down here," noted Frisk.

"I can smell... water ahead..."

"We better be careful. The tunnel could be flooded, and stagnant water could be poisonous."

"Thank you for being so optimistic."

"Don't like someone else doing your job?" Frisk chuckled.

"Whatever."

The two of them continued down the passage in silence.

"I wish... I could do something to save Chara. They died for nothing... in such pain..."

"Funny," replied Frisk, "If ghosts exist in the Underground, why hasn't anyone seen Chara?"

"Perhaps they've already moved on to the next world?"

"If you believe in such things..."

"Well I think my soul's moved on to leave me to rot in this husk of a..."

Frisk covered Flowey's mouth again as they said, "Talking like that accomplishes nothing. As long as you can remember who you were, you must have hope. You must have DETERMINATION."

The flower mumbled into Frisk's hand. Then the hand was pulled back as they crawled along.

"Something... strange is going on... I can just feel it," said Frisk softly.

"Maybe we should go back."

"I don't think it's dangerous, but I suppose I should call Toriel just to be safe. You make the call."

"Fine," he muttered as he took out the phone and looked at it. Pushing a button, he listened. "Great," he muttered, "There's too much rock here blocking the signal. I can't get through. Maybe we should just turn around..."

* Go on. There might be something... special... ahead.

"Oh, it won't hurt to go a little further," said Frisk.

Soon the passage opened into a vertical shaft. Looking up and down, they could not see a top or bottom. The shaft was too twisting.

"Could this lead to the surface?" asked Frisk looking upwards.

"Not that it would be useful. Now let's go back before..."

Another tremor was felt. Then the edge of the passage collapsed into the shaft dropping the two of them. They fell screaming into the darkness as small rocks and dirt fell with them. The light was almost useless in the cloud of dirt. After hitting the edge of the shaft a few times, Frisk mercifully passed out. They felt a massive tingle throughout their body just before that happened.

...

Frisk awoke in their bed back in the ruins. They looked at themselves and realized they wore the same clothing they had worn the first time they came to the Underground... or fell into it.

'Could I have somehow *RESET?!' thought Frisk in a panic, 'No, it doesn't feel like a **RESET. Something else must be going on.*'

Getting out of bed, they went to the door. There was nothing to hear on the other side. So they opened the door and entered the hallway. It wasn't hard to turn toward the sitting room where they hoped Toriel would be waiting. Waiting for them reading a book. Walking into the room, it became clear that the chair was facing the other hallway. They couldn't see who was sitting in the chair, but could see the hint of a black spiral horn over the top. A horn they had never seen before.

Walking closer, Frisk wondered what they were getting themselves into.

'Uhh... Hello?' they asked. Then they wondered what changed in their voice.

The chair turned to reveal a midnight blue pony with wings. They wore a black tiara on their head and a black necklace about their neck showing a white symbol of a waxing crescent moon. The... monster just blinked in surprise.

'What manner of creature art thou?' it asked.

'I was going to ask you the same,' replied Frisk.

'I am Luna,' came the reply, 'One of the Princesses of Equestria. I am the alicorn of the night. Part of my job is to monitor dreams. I hadn't expected anything like this tonight. Thou art?'

'I am Frisk. You normally invade dreams?'

'Invade? That's a strong word. No, I visit dreams when I sense... somepony needs my help.'

'I'm no pony.'

'Clearly that is so,' replied Luna evenly.

'Great. I'm having a strange dream about some monster I've never heard of before.'

'Monster?' she giggled, 'Ponies are not monsters. We are quite civilized.'

'Well you aren't human,' replied Frisk.

'So I take it that there's only humans and monsters in your world?'

'My world?' asked Frisk curiously.

'You are clearly not from...' said Luna before she paused.

'What's wrong?'

'There's something going on with your body... something very magical... I suggest you wake up now. Once I figure out where you are, I shalt surely send aid thy way.'

'Allllll-righty then,' replied Frisk as they woke up.

...

Frisk awoke in a patch of flowers. There was water slowly running through them. It was getting into their mouth. As a reflex, they spat out the water and sat up. They felt... tingly all over. Thier muscles were sore, but not as sore as expected from such a fall. The cowboy hat lay nearby with the light still one. Fortunately, the light was waterproof. Something needed in caves and mines. Retrieving the hat, it was placed on their head so they could use the light without hands.

'Ugh,' they thought, 'My clothes are so tight. They must have shrunk somehow.' Shrinking in the shirt made it pull up until most of her midriff was exposed. The boots were so tight, they made the feet positively ache. So the boots were removed as quickly as possible. The socks shrank so much, they split at the toes so those were removed as well. Even the hat had shrank a bit.

They she realized something felt very strange in their chest. More than just a shrinking shirt. Something they never felt there before.

'I... HAVE... *BREASTS?!** My body... it's somehow grown up!*'

She opened her mouth to cry out to Flowey, but... nothing happened. No sound other than her own breath escaped her mouth.

'I'm mute?!'

So Frisk looked about frantically searching for Flowey, but saw something she wasn't expecting at all.

'ASRIEL?!'

Asriel lay on his back among the flowers and water. She saw that he was naked and... well... grown up as well... in more than one way. His face and horns like like the first adult form he took after he turned back into a kid. The horns long and curved, and there was black 'fang marks' coming up around the corners of his jaws.

'Mmm...' she thought as she stared at his... asset, 'Big...'

She crawled to his side and began shaking Asriel.

'WAKE UP!!' she screamed at him mentally.

"Mommy..." he muttered, "Just... 5 more minutes..."

'NO! WAKE UP NOW!'

When he opened his eyes, she could see that the whites of his eyes... were white. Not black like when he began the transformations into the more powerful forms.

"Ugh," he groaned, "Would you stop blinding me?! What time is it?!"

She looked away. 'I don't know. We're stuck in a cave somewhere. You aren't Flowey anymore. You're *ASRIEL*!'

"WHAT?!" he asked, "How can I be myself without a SOUL?!"

'I don't know. There's some strange new energy. It's filled the empty space that was left by Alphys' failed experiment. I can somehow see this energy inside your body. This strange energy... it's all around us... in the water... in the flowers...'

"Wait! How can you talk to me without using your mouth?! How can you see with your eyes closed?!"

'I DON'T KNOW!!'

"Okay okay," he replied as he hugged her, "Just calm down and think about this rationally."

'You chest... so strong... so furry...' she thought as she snuggled against his chest.

"WHAT?!"

'It's nothing! Damn, I didn't mean to tell that... to you.' In a panic, she pushed herself away from him. He lost his grip because he wasn't expecting that. She backed up through the flowers and water.

"What's wrong?!" he asked as he got on his hands and knees.

'I'm so sorry!' she thought, but he didn't respond. 'Asriel?' He crawled closer. 'He can't understand me now?!'

"I don't understand you any more," he said as he reached out to her.

Reaching back, their hands met. Their fingers entwined.

'Can you hear me now?'

"Yes," he answered, "I guess you can only 'talk' to me... when we touch."

"Are you going to ignore me all day?" asked a voice from the dark.

Frisk turned her head. The light revealed a pale skin woman with rosey red cheeks. She was quite grown up judging by her breasts, hips... and other things. Her neck length hair was straight and brown.

"CHARA?!" asked Asriel, "You're... you're... NOT A SPIRIT ANYMORE?!"

"I think that's pretty obvious..." replied Chara, "and why is Frisk giving you the silent treatment?"

"She can't use her voice! By touching me, she talks to me in my head!"

"Voices in your head? Well that's not creepy at all."

"And she can't open her eyes, but she can... somehow... see things we can't."

"Not's not creepy at all either."

He glanced at Frisk before saying, "Frisk says she didn't ask for this to happen!"

"And I'm not blaming anyone either," she replied casually.

"Oh just get over here!" he replied.

Chara crawled over on her hands and knees. Soon, she was embraced in one of Asriel's arms while the other continued to hold onto Frisk. By the time he hugged Chara, he was crying freely.

"Oh what's wrong now, ya big baby?!" chided Chara.

"I'm the one!" he sobbed, "The one who made you suffer and die! FOR NOTHING!"

'I... somehow know you so well,' added Frisk.

"Well I've been in your mind... your body... for quite some time... ever since you fell into the Underground."

'That's not creepy at all.'

"But as for you," she said turning to Asriel, "You didn't force me or trick me into anything. I wanted to save the monsters. They deserved to be free. I knew that dying the way I did... wasn't going to be pleasant. That's all in the past now so stop crying."

"I'm so sorry!" he whined as he cried.

"Well we'll never do anything stupid like that again. Okay?"

He kept sobbing so she shut him up... with a kiss.

"MMMPPPHHH?!" he asked as their lips met. Their mouths came together.

'Am I getting some of this LOVE too?' asked Frisk.

'Just be happy you aren't getting any ExP,' replied Chara mentally.

'Wow, when Frisk touches us, we can transmit our thoughts to each other,' noted Asriel.

'Now there's a mixed blessing.'

'No stranger than the winged unicorn I met in my dream,' thought Frisk.

'THE WHAT NOW?!' thought Ariel and Chara as one.

Frisk imagined Luna as she appeared in her dream.

'What manner of monster is that?!' asked Asriel. Chara and him almost forgot how they were still smooching.

'She said she was an alicorn. A Princess. She lives in a land called... *Equestria*.'

'That's not creepy at all,' thought Chara.

Chara broke off the kiss, but kept the hug going. There was a momentary pause. A silence before Chara announced, "Asriel. You boner is pushing against my stomach. If you cum on me, so help me I'm going to..."

Her words were cut off by his scream. His cheeks turned beet red as he rolled away from both Frisk and Chara. "I'm so sorry," he bleated.

'None of the spare clothing Goat-Mom packed is going to cover that... package.'

"We'll... just have to make a loincloth from a spare shirt... for now," replied Chara. Then she looked at Frisk and asked, "How can you be wearing panties? They should have split..."

'I never wear panties...'

"Oh..." she replied, "Let's get some protection on and get going."

'I'm not going to get far until I adjust the gunbelt as well as these knee and elbow pads. They're... really tight. Lucky there's room to let them out.'

"That's my mom," sighed Asriel as Frisk began pulling out handfuls of spare clothing.