The Apple's Family Tree is growing

by Akataja

Rating: mature
Tags: Sugar Belle, Big Macintosh, Slice of Life, My Little Pony: Friendship is Magic, Anthro, Romance, Applejack, Porn, Fetish, Sex
Length: 4072

Apple Jack is going through the worst heat and the only stallion around is already taken... and her brother!

Estrus had shown up at sweet apple acres and Apple Jack has a real hard time with it.
Sugar Belle is suffering the same problem, but she has an advantage, a stallion with the right tool.
Big McIntosh is in a long term relationship and wants to go to the next level, but his mare friend is not ready yet.

What happens when these three ponies and their problems clash together?

Kinks: Anthro, Incest, accidental Incest, Brother/Sister, impregnation, crossbreeding

This Story was originally written for the April Incest is Wincest contest.

Published 2019-04-20 00:00:01 UTC
Last updated 2019-04-20 00:00:01 UTC

The only chapter

Author's Note

This Story was written for the April Incest Contest.
Also, this story was written by a German Brony and you should except some errors in grammar and spelling. Please give it a chance anyway.

The only chapter

McIntosh and Sugar Belle were a sweet couple and had a lot of fun. She thought he was the most handsome and nice guy ever and he saw the most beautiful and kind mare when he looked at her. Since Sugar started to work for Mrs. Cake, she was way more often in town and they spend much time together, going on dates, eating together and spending a nice time together... oh! And of course, the sex was awesome! Sugar Belle maybe seemed like a good honest mare, but she had nearly no taboos and did everything with him he wished for, an angel in the Streets and a slut in the sheets, Macci was happy.

Apple Jack was a bit less happy. MacIntosh was her big brother best friend forever and she should be happy when he was, but somehow she was not. Sometimes she was scared he would leave the farm to live with this mare, but her brother was a born farmer. He would never leaf the farm, that was sure. Every time AJ saw him and her together she felt like she could puke every second, but she had to smile and act like she was happy for him. She did not know why she felt that way, maybe she was a little envy. Like the most little sisters, she had a crush on her big brother when she was a little filly, but these times were long ago, right?
She just did not like the idea of losing him, but at least he was happy.

This day she was working on the fields together with McIntosh and Apple Bloom was also there. It was a very warm day, the sun was bright and the hard work made every pony sweat. Apple Jack was in the middle of the worst heat, her womb was like an oven right now. It was the worst timing for such a hard estrus because she had no chance to go to Zecora for a potion or to ask Twilight for a spell.

Grannys Cure for immense heat was simple “Go and grab a fine Stallion and get a bun in this oven!” of course she didn't give that advice when little Apple Bloom was around.

But Apple Jack had also no time to find a stallion, there was a huge load of work to do! Most days it was like she was bucking tree from dawn till dusk. And today seemed to be no difference. Around noon she needed a break and walked over to the fountain to get some water. McIntosh was also there, he just had grabbed the bucket and poured the cold water over his head. The water was running over his bare chest and Jacks eyes followed one of the drops and she licked her lips when she imagined how it would be if her fingers would run over this strong muscles and vanish in his pants. Her eyes went lower and opened more when she realized that his wet pants were so tight to his body, that she could see the lines of his sacred treasure! It should be retracted but Macci was surrounded by mares in heat. AJ had to bite her lip, her brother had grown a lot since the days they played nude in the mud.

“Ahma sorry,” he said and his word ripped her from her little fantasy “ah know it's Ladies first.” he threw the bucket back in the well and pulled it out with the robe. The bucket was now full of water and he offered it to his sister.

Jack took the bucket and she thought about pouring it as he did, her white blouse would become transparent and he could see her goods as well as she saw his. This would be a nice flirt she would do, but Big McIntosh was her brother. For Celestia's Sake! AJ pull yourself together.

The scene was interrupted by Sugar Belle. She had just arrived and walked over to them.

“Macci!” she called out for him and he looked over to her with a smile. “I missed you so much!”

They hugged each other and Mac raised her, his fingers grabbed her buttocks like a piece of clay. Mac turned them away but AJ was able to see how she run her hand over the huge bulk in his pants. The two were kissing deeply, Jack could hear it, she could see they tongue wrestling and she could swear she smelled that dirty unicorn cunt getting wet.

She had to go.

AJ walked as fast as she could over to the barn, she needed some distance.
Jack knew that her little sister had a little hideout right under the roof of the barn, on a small floor hidden by the hay. It was small but the air here had always the smell of fresh hay and was cool, also Apple Bloom had a hidden stash of Apple Juice here! AJ cracked open a bottle and sat down, frowning and getting this delicious juice down her throat.

Oh, Celestia, she needed that! Nearly as hard as she needed good old rutting.

“Screw it!” she said herself and opened these tight short jeans she was wearing. She pulled the zipper down and a herby scent filled the air. She inhaled her own flavor with a shudder “darn gale, yah really need it.” she closed her eyes and licked her fingers before she put her hand inside her panties. Rubbing the old bean would only help for a little and the heat would return soon stronger than ever, but she needed to scratch that itch right now. She was sitting on a hay ball, her legs spread wide, one hand was holding the bottle, the other was in her pants and her head was leaned back with closed eyes.
Jack was none of the fillies that needed romantic music, candles or a foam bath, she only needed the taste of Apples in her mouth and two strong fingers to grab that swollen clitoris and doing hard circles.

“You see? No pony is here.” That was the voice of Sugar Belle! AJ was frozen in an instant! Her body was so nice and relaxed and from one second to another she was totally flexed!

“Yah sure about that?” AJ could hear her brother.

She stood up from the hay and crawled over to a little hole in the floor and spied on them. Her ears were right, Macci and Sugar have entered the barn. Sugar had pressed him against a wall and opened his pants. She pulled his jeans down to his knees and AJ had to close her mouth with her hands. This was a giant red monster snake! She knew her brother had a huge dick, but this was the first time seeing it in full length. How could any mare fit this thing inside?
Sugar Belle looked like a snake when she went on her knees and shoved that thing in her mouth! Was her jaw made of rubber? AJ could not believe she shoved down that thing so deep in her mouth. Her throat was bloated and she managed to get in that whole monster. Jack could only imagine how that feel, it had to hurt, right? The farm mare had to admit Sugars skill and she had to admit that she was some kind of envy.

Sugar Belle had to gag and lost some nasty slimy spit when she let the monster out of her mouth “Alright big boy, time to dress and pound that pussy.” she smiled and get a black condom from her pocket. That thing nearly looked like a plastic back for garbage!

“Cant we put that thing aside?” asked the big red stallion

“No, we cant. Macci you know I am in heat!”

“Ah know and that's good! We had some really good harvest, y' can easily take off a year or two, ah will take care of you and yah can take care of the foal.” her gently stroke through her mane with his big strong fingers.

“No Macci! I already told you a dozen times, I am not ready for this... I want to finish my training with Mrs. Cake and open my very own shop, maybe I want to go to Canterlot or Manehattan?”

“W-wait! Y'want to leave Ponyville?” he gasped

“I don`t know... the only thing I want right now, is that big fat cock inside of me... so let me put that condom on and then take me like a cheap whore!”

Big Mac grunted and Apple Jack ripped herself from that scene. She knew it was wrong to watch her brother having sex with her hand in her pants. She was able to escape through the small window without been seen. Soon after she left the barn unseen, she put her hand on the wall, she could feel it shaking. Darn! Big Mac was hammering like mare like a wild bull! AJ had that crazy idea, she could go back inside and take part in this game. Sugar was a crazy bitch, she would say yes and Macci maybe was horny enough to not mind fucking his little sister. But no, this would be wrong, super wrong, mega wrong and also so super nice! But no... she just could not do that. She returned to the well, took the bucket and put her head under water, screaming all the air from her lung and then pouring all that cold water over her body, it was so cold it hurt but it also was good.

“A-apple Jack?” Apple Bloom stood right next to the well when her sister just showed up “Is anything alright?”

“No... no AB... it is not.” Jack was heavy breathing.

Apple Bloom looked at her sister and her transparent wet shirt “J-jack... I... I can see your...”

AJ just stripped her shirt and threw it aside, showing her bare big orange breasts to the world “We have a lot of work to do Apple Bloom.” AJ picked up her shirt again an hung it on a branch “This Shirt will dry.”

The rest of the day a quite normal and Sugar stayed at the farm for this night.

AJ had the room next door and was prepared for a night full of way too loud sex noises. She already thought about sleeping downstairs in the living room. She had picked up her pillow and her blanket and went outside of her room when she could hear the voice of her brother and his door opened.

“Listen Sugar, j-just wait here. Y'know ah really love yah, we will find a solution to this problem. Just stay here, ah will return as soon as possible!” Big McIntosh rushed down the hall, he did not notice his sister.

Apple Jack looked after him, maybe he had forgotten to bring the cows from the fields? It was his turn today and he spend a lot of time in the barn, fucking with sugar. After he was gone Apple Jack waited a bit, till she hears something from his room. She walked over and found Sugar Belle climbing out of window.

“Sugar cube? What are yah doing there?” AJ sounded confused.

Sugar belle sighed “Listen Apple Jack, I really like you, your family and your brother... but Macci is a bit to uptight and old fashioned... in the last weeks he only was speaking about moving together, making foals, getting married... all this family stuff, all this boring stuff... listen... I have to go... tell him he is an awesome fuckboy, but I don't want this.” Sugar jumped out of the window and made landing like one of these comic heroes Apple Bloom loves so much. Apple Jack leaned out of the window and looked after her, she was running like the wind. Jack was impressed, she never knew that this simple baker mare was so athletic.

This situation was horrible! Maybe Big McIntosh seemed like a big tough guy, but AJ knew he was a softy. If he returns and sees that Sugar is away, it would break his heart, it would break himself. But luckily Apple Jack was here, she could talk to him when he comes back, softening the shock, this was her task as Sister.
So she sat down on his bed and waited, but it was late, she was exhausted from a day full of work and she was very tired, she wanted to sleep. She yawned after 10 minutes, her eyes were way too heavy after 10 more minutes and after another 10 minutes, she thought it would be okay to close her eyes a bit.
She laid down on the bed, resting her head on the pillow and getting covered by the blanket

“Ah knew ya would stay.”

AJ opened her eyes when she heard her brothers voice. The only light came from the window and it was weak. Did he confound her with Sugar Belle?
He starts sniffling behind her ear, kissing her, the feeling of his hot tongue was strong and it made her womb hot like an oven again. She shuddered when her brother stroke over her side, she could feel his rough fingers. Big McIntosh was a hard worker, he pulled the plow and the cart with tons of apples, he chopped wood, repaired the barn, he was a strong male and all this hard work formed his body. She had to bite the pillow when his fingers entered her panties and rubbed over her sensitive labia. Apple Jack wanted to moan, but she bites the pillow. Maybe she should have moaned and spilled the beans? Big Mac thought she was Sugar Belle, this was wrong.

But that hot throbbing smelly stallion dick between her buttocks felt right.

Her last sense of responsibility left her when she felt how his strong finger glided between her legs and found her clit. She had to bite her fist when he started to rub the magic bean with two fingers. The feeling of his warm precum in her tail and fur made her wild, it became all sticky and made her look and smell like a horny slut.

“so wet.” he whispered in her ear “love a horny mare in heat.” she saw his hand reaching over her to the nightstand.

She gasped because it was clear that he wanted to reach for the lamp to make some light. If he finds out that she took the place of his mare friend she would never again have the chance to have this magnificent cock. The best thing would be to let him find out and end this act of accidental incest, but she doesn't want that. She grabbed his arm to hold it.

“Ya sure?” his rough deep voice was always nice to Apple Jack and now every tone made her pussy flex and shiver. He kissed her neck again “Ahma glad y'want no condom too.”

Wait! Did he want a condom, not the light? He wanted to fuck her raw in her heat!? She tried to grab the condom now but it was too late. His thick dick was not only as big as it could be, but it was also dripping with precum and AJ knew she would end up pregnant the moment he spread her. This guy was way too big! AJ was no virgin, but she only had one dick so far. Pony Joe, better-known as Donut Joe later, was younger than her, it was soon after she finished school, he was a good friend and looked so cute when he begged for it. Unicorns have a smaller penis than Earth Ponies and Jack was very glad about that back than, some times she things that Joe only found his passion for donuts after he played with her ponut. Anyway, Jack never had imagined the differences in dick size could be so big! She felt like she would die and it would be a super nice death, the feeling of her tight strong pussy getting filled and stretched so far she thought it would rip. She even had the feeling it would become even bigger.

She could taste her own blood because she bites her fist so hard, but she was not able to concentrate on the taste. The only thing she could feel was how thick his dick was inside her and the only thing she could hear was his deep grunting when he forced himself even deeper.

“Can't believe how tight ya without a condom.” He spoke through his teeth. That's right! She had a different body shape! He had to find out soon. He grabbed her right leg and lifted it high.

The sudden sting in her tights came so hard that she was not able to hold that yelp she let out. Luckily he could not hear it, because of his grunting and the sounds of the bed when he changed position. Apple Jack was turned on the side, her left leg raised high to make more space for that huge monster dick of her brother inside her. She closed her mouth with both her hands, she had too much fear to let out another tone.
Apple Jack shuddered hard when his medial ring spread her labia one more time, tears came to her eyes and she was not sure if she was crying in pleasure or pain.

“F-fuck! Can't hold this Sugar.” He moved a bit and made a big thrust to shove the rest of his dick inside her with one move. He hit her cervix and overstretched it and AJ knew she was not able to hold the moan, but at the same time, he pressed his lips on hers to kiss her deeply. They were kissing deeply. She could not believe how amazing his tongue felt, she was indeed jealous of Sugar right now.

Big McIntosh soon started to massage the big breasts of his sisters, he did not think about the change in size, he just enjoyed the feeling of this warm fun backs in his hands and how her nips became hard under the pressure of his thumb. When he grabbed her tit hard and squeezed it, he made her moan in his mouth.
He was not waiting too long and soon started to plow his sister. He needed a lot of strength to move his dick in and out. His massive muscles were covered in sweat and he could feel it flowing from his forehead and chest. Mac didn't know he had sex with his sister, but he knew something was different. He could not care less, this feeling was awesome! It was his bare pussy! It was so much warmer and so much more intense. Also, the feeling of finally setting seed in that hot womb made his dick harder than ever before.

Every single thrust pushed her deep into the hay-filled mattress. AJ was finally so far, that she stopped to think about how wrong this was, she just enjoyed to get plowed by a stallion with a huge penis, she did not care that it was her brother. The only two things she had in her mind was to do anything to keep herself quiet and the sensation she felt when finally someone was scratching that itch.
She felt him throbbing deep inside her and how his flared tip scrubbed hard over her sensitive vagina walls. He hit her cervix again and again and every time it loosened up a little more, it was like very aggressive kissing with internal organs. Thick sticky drops of warm precum filled the space between the entrance to her baby wonderland and his foal batter. With every move, he pressed some of it in her hot fertile womb. His big balls flapping against her strong buttocks, forth and back and forth and back, again and again.
The grunting and moaning of the two siblings filled the room as well as the scent of their naughty juices and the slurping sounds of their sexual organs, smacking against each other.

McIntosh did not care anymore, he was not sure who he was fucking here, but it was not important. Right now he was just an animal that wanted to mate and he was ready to reach his target.

AJ could feel this thick monster inside her was getting even bigger, swelling up and pulsating, she knew it was time. She would be impregnated by her own brother. Her belly would bloat like watermelon or even bigger! She would have to raise an incest foal and maybe she had to hide it! This was wrong! This was a horrible mistake! But she doesn't want to stop! All of her instincts bounding her to this dick and her body acted on her own when she turned around and hold him tight with her legs around his hip.
She felt like she would melt when he starts to shoot his hot fertile load inside of her, it was like liquid metal inside of her. It made AJ scream in pain and pleasure, she felt light like a feather, she was flying. She felt like seeing stars and a million of supernova right in front of her eyes, this was the most intense she ever felt, so strong that she lost her connection to herself and fell unconscious.

AJ opened her eyes and find herself in darkness, she was still in Maccis room and it was still night. She felt a light stinging pain in her lower body when she moved. Big Mac's big monster cock was still balls deep inside her, it was soft but still huge and warm. Big Mac had put his arms around her, she could still feel his last kiss on her neck and the warm breath from his nose, has he fallen into sleep too? At least it seemed so. For a moment she had the idea to stay here, it was warm and comfy, but she knew this was insane. AJ let out a muffled moan when she moved up and felt how that big fat horse cock left her body, she shuddered about the feeling of the sperm flowing out of her fresh fucked cunt.
She walked down the stairs, she knew she had to go back to her own room, but she wanted to drink some water first.

“Apple Jack?” Sugar Belle meet with Jack when she was sneaking back in the house. Her clothes were a mess, her panties were hanging out of her pocket. Sugar came back from a club, where she had drunk sex with multiple strangers, she was in deep shame and just wanted to sneak back to Big McIntosh, but now she nearly bumped into his Sister.

“Sugar Belle?” AJ saw her and she could easily guess what she did by the smell and her look, but should she judge her? She just had the sex of her life, with her own brother and should be ashamed of herself, but she felt good.

The two mares looked at each other for a moment, than they ways parted. Both decided it was better not to talk about what happened, never.

Time passed.

AJ was scared of her pregnancy, but she had to admit that she felt better now. She was able to work harder without that annoying heat and from day to day the idea of having a foal felt better to her. But she was not the only pregnant mare, Sugar Belle was walking around with a big round belly too. Big McIntosh was very proud about that, even when too half zebras popped out of her. He believed her when she told him, that her great grand father was half zebra. AJ could just chuckle and shake her head.

Jack gave birth to a healthy earth pony colt, she never told any pony about his father and no pony dared to ask twice.
At least till the day when her son came to her and asked her a very confusing question.

“Mommy? Why do I look exactly like uncle McIntosh?”