Gabriella tried to change herself back into a boy, but failed on every attempt. Ultimately, she realized that she enjoyed her feminine features and she still had a cock, so it was the best of both worlds. Knowing how early it was, she trekked outside wearing nothing at all. Enjoying the cool breeze before the sun crested the horizon. She relieved herself on a tree in a secluded area of their estate. She turned to see Chantal walking toward her in the pre-dawn light, her heavy breasts bouncing with each step and her larger cock swaying betwixt her legs. Their mother had endowed them with bigger cocks, but Chantal’s was a fair amount larger.
“Isn’t it too early for the princess?”
Chantal spoke a phrase and waved her arms. The tree branches reached forward and pulled Gabriella closer, causing her to be ensnared by many small vines and branches. Once the spell resolved, Gabriella was forcefully enveloped in the side of the tree, her ass ripe for the taking.
“What the hell are you doing!?”
Chantal laughed as she struggled. “I have to relieve myself too. So, I came to the nearest chamber pot.” The buxom girl used her soft hands to spread her sister’s rump. She moistened her shaft before pressing it into her backdoor. Chantal eased herself all the way in and with some effort, began emptying her bladder.
Gabriella shrieked and struggled, halfway encased in the tree. Her cock grew hard as it rubbed gently against the bark. Chantal dismissed her pain, continuing to relieve herself. She had plenty of fluids stored for this moment, some of which remaining from their spells the previous night. The flow continued as she reached around and patted her sister’s firm belly.
“Thanks for holding this for me.” Chantal giggled as she continued blasting water into her sister’s ass.
“Aren’t you almost done?”
“Just about. I used a spell that makes the water in me take up less space until it exits, so I can hold twice as much. It’s really handy for those long studying sessions.”
Gabriella endured as her belly inflated against the tree. She could do nothing helpful without free hands to make the magical gestures. It lasted a while longer before she could feel the stream slowing.
Pulling back, Chantal pressed all the way in, causing a shriek from her unprepared sister. “What’s wrong, not ready for all this meat?”
“Take it out!”
“Hell no. You just have to get used to it and it will feel great!” She stayed in place, buried in the fair-skinned butt. “Don’t let any out or I will turn it into a solid inside of you!”
“It’s too much, please stop!”
“Are you begging? That makes this even hotter.” Chantal drew back and pressed in with all her might. Forcing the girl’s belly and cock against the tree. Her ass flattened against Chantal’s hips, hiding her cock entirely in her ass. She drew back and pushed in again, equally as hard.
“No, stop, I can’t…” Gabriella gasped, shooting her seed upon the tree and into the grass below her.
“Done already? Typical. Guess I can go for the quick finish then.” Chantal set her legs apart and pounded her restrained sister. She felt the liquid inside sloshing and churning with each stroke.
Gabriella whined as her belly squished against the tree and her sister’s cock plugged up her ass. “Damn you! Hurry up and cum!”
“Want me to cum in your ass? Want me to fill you even more?”
There was a long hesitation. “I don’t care.”
Chantal pushed balls deep again and stopped, just barely holding back. “You really want me to cum in your ass?”
“Just do it. Just cum in my ass.”
The words excited Chantal more than she imagined. Without moving she emptied into her already burdened sister, both girls moaning as she did. They waited, both breathing heavily, until the hung woman fell limply from Gabriella’s ass.
“That was fun.” Chantal said a spell and watched as the tree slowly released her big bellied sister. She couldn’t help laughing as she watched her stumble around the tree and begin emptying. They walked back in silence, still alone due to the early hour. Nearing the back entrance, Gabriella stopped and started casting.
Before she could react, Chantal’s hands were bound tightly behind her by a magical rope, wrist to elbow. “Stop this, we’ll get caught! At least get us inside!”
“That didn’t stop you from pissing in me, did it sis?”
“Nobody saw us, but this is right outside!”
“Yeah, you better keep quiet, whore.”
Gabriella took a long time to cast the next spell, weaving imaginary runes in the air and speaking the mystic tongue. With a poof and a mystic haze there was a large black stallion standing beside them.
“What the hell are you doing?”
“This is your new fuck buddy!” Gabriella smirked.
The horse’s black fur shined in the peeking sunlight. It inspected her, sniffing the bound, naked woman as it walked closer. The large animal’s shaft grew beneath its legs. It snorted, tilting its head as a nudged her shoulder. Gabriella stroked the horse’s mane.
“Are you ready to take a horse cock?”
“I’m not going to let you do this.”
Gabriella cast another spell. Chantal gagged as a white blob appeared over her mouth. “Doesn’t look like you have much of a choice.” She tried to run, but again, Gabriella cast a spell and watched her sister stumble against a waist high stone wall. Her legs were spread apart by a conjured bar strapped between her ankles. “You look like you’re completely fucked now, dear sister.”
The beast trotted closer, sniffing between her legs. Gabriella crouched and moved beneath the beast, holding the huge cock as she tried to place the tip in her mouth. It barely fit, and after struggling for a while she decided to use a magical aide. She made a gesture and tried again. This time the tip spread her mouth wide and started moving deeper into her windpipe. She maneuvered her head, allowing more of the thick shaft to work its way past her tonsils. Suddenly she felt the animal draw back and tense. Within an instant, it thrust forward, forcing a large portion of its meat down her throat.
Gabriella grabbed her throat, feeling the warm organ beneath her skin as it was pulled up and pressed down again. This time she felt it in her chest. She frantically slapped the horse, trying to halt it, but the beast was wild with lust. It continued force-feeding her its cock as it worked itself into a frenzy. Luckily Gabriella moved aside before it finished. The organ flopped into the air as it thrust wildly, trying to find release. She directed the massive animal to her subdued sister.
The horse raised itself high and put its front hooves on the stones as it edged closer. As it moved near, it thrust wildly into the air, anticipating entrance. Chantal gave muffled screams as she also anticipated the impending entry. The wet organ slid atop her ass, lying upon her back momentarily, Gabriella could see her sister was in for quite a large treat. The horse lowered the shaft slowly, attempting to ease the tip into the warmth beneath her legs.
Gabriella walked in front of her sister, stroking her hair as she passed. “Here it comes.”
The horse grunted as it pushed cautiously, trying not to slip past again. Chantal’s asshole spread unnaturally wide, her magical body accepting the enormous head of the cock. The horse knew it was in, and it thrust in with immense force. The thick, damp pole half disappeared into her as she screeched loudly. The horse ignored her high-pitched wailing as it focused on fitting its massive cock into the tight, wet nook.
It dominated the poor girl, slamming into her without hesitation. Chantal seemed to be in less pain as time went on, each thrust pressing her belly outward, showing an outline of the horse cock inside her. The beast had surprising endurance, continuing for a few minutes at a speedy pace. It snorted and put all of its weight into the pummeling. Chantal squealed and the animal whinnied. It reared back and lifted her up enough to show her belly distend, filling with blasts of the conjured horse’s sperm. It grew heavy, hanging low as the flow eventually stopped. The weight of the massive amount of sperm pulled her swollen stomach downward. The beast lowered her as it finished, balancing her over the wall, her stomach puffed out like a ball.
The horse edged back. The unwieldy cock popped free, allowing some of the sperm to pour onto the ground. For some reason Chantal fought to hold the rest in, awkwardly using a few fingers to keep her gaping asshole plugged. Gabriella nearly questioned it until she turned to see two robed women standing in the doorway.
A woman with uncaring eyes watched from beside their mother. Their aunt, a member of the local council, had come early. Mabel stood taller than Magdalene. Mabel’s caramel hair and deep brown eyes complimented her tanned complexion. Her resting expression was austere, bordering on irritable. Her manicured eyebrows always seemed to imply she was judging you. She was prettier and had a more formed body than their mother, but the robes they wore kept that hidden.
Gabriella removed all of the magical bindings from her sister. Now free, Chantal scowled as she leaned upon the stone, still retaining the massive amount of sperm without her hands. Both girls were silent as they waited for chiding from their mother.
“They remind me of someone.” Mabel spoke, stone faced.
“Yeah, they do.” Magdalene shot a malicious stare to her sister.
“I recall someone being jealous of my abilities, so she summoned a pack of wolves to assault me.”
“That was years ago, Mabel, can’t you let it go?”
“I only wish I had summoned a horse to fuck you like your… daughter did.” The expressionless woman took care to refer to Gabriella’s new gender. “She is quite resourceful, putting your actual daughter to shame.”
As usual, their aunt had gotten under their mother’s skin. Magdalene narrowed her eyes and set her jaw, furious. She turned to her daughters and spoke mystical terms as she gestured. “I told you two to behave and you ignored me! Now I will have to punish you yet again!”
Chantal yelped, jumping upright as if something had entered her backdoor. “Mom, why?”
“Your punishment is to hold all of that in while you watch your sister.”
Gabriella couldn’t stifle her laugh as her inflated sister clenched her teeth, stiffly walking in a circle. Her humor faded quickly as something approached. The stallion from before had come back with a larger cock and balls that were double the size. “No, please. She started it.” She said with sorrow.
“I don’t care, I’m ending it. What if the other council members had come early?”
“No! Bend down and don’t make me bind you!”
Gabriella knew it was pointless to argue. She leaned upon the wall as her sister had before. “Can I at least get it wet first?”
“That is what your sister is for.”
Chantal was distressed, but she was still defiant enough to roll her eyes as she bent down to put her mouth upon the massive shaft. She wasn’t able to get her lips around it, so she licked the flared edges of the head as best she could. Her full belly gurgling as it hanged below. She spent a minute licking the edges of the cock before moving to her sister’s ass. She licked her fingers and used them to prime the unhappy girl’s ass.
Magdalene waved her aside and whistled to the horse. The beast carefully pressed against the still tight hole, but slipped away. It took three more failed attempts before it finally parted her. Gabriella screamed louder than her sister had. Stepping forward as the huge tip threatened to split her apart. Her hips were against the stone as the beast continued the pressure. It startled her as the end finally breached her. Gabriella balled her fists as she hung over the wall, yelling as she tried to cope with the pain. The beast seemed more relaxed than before, pausing to allow her recovery time before it moved again.
It snorted and took a step forward with its hind legs, forcing the unreasonably sized cock deeper into her bowels. Detesting, Gabriella struggled to find a better angle to accept the unplanned entrance. She turned and raised her hips before realizing there was no better option. She relaxed and breathed deeply as the beast hesitated. The huge horse rammed in, again causing Gabriella’s semi-erect cock to pulse, sending streams of cum onto the side of the stone wall she was pressed against. Gabriella’s pained expression relaxed as she blinked repeatedly. Her entire body slacked, as she seemed to be in shock.
The stallion continued, pumping the limp girl upon the wall until it made a triumphant sound and blasted her full of cum. Gabriella’s belly bulged, distending with an absurd amount of cum. The beast stepped aside and removed its massive plug from her ass. Gabriella was pulled backward by the flared tip of its cock as it was pulled free. She fell onto her back, gripping her swollen belly as the horse vanished in wisps of black smoke. With her senses returned, she gave a pleading look to their aunt.
Chantal leaned upon the wall, giving a drained smile as she watched her sister in agony upon the ground. “You are just a regular cum dump, aren’t you?”
“Shut up!” Gabriella writhed. “I should have summoned an elephant instead, you whore!”
“Enough!” Magdalene boomed. “Go empty yourselves and we shall have a nice dinner to welcome your aunt Mabel.”
Chantal jumped, tensing with the sudden removal of the magical plug in her backside. Both of the girls waddled into the woods in opposite directions. Their somewhat erect cocks slapped their legs as the held their full bellies. Gabriella moved slower, as she held nearly double the amount of her sister.
Later, the four of them ate in silence. They all acted as if nothing had happened, until Mabel grinned wickedly. “Remember that time you gave me a horsecock, sister?”
“Mabel, we shall not speak of such lewd behavior during dinner.”
The woman sighed. “Your mother was just as frisky as you two, I must admit. Kind of a prude, though. Always tried to hide her desires.”
“Mabel, I won’t say it again.” Magdalene rose in her seat.
There was a short silence. “Later I will have to tell you what she enjoys for desert.” A smug grin spread across Mabel’s face. The rest of the dinner was tense to say the least.