Limestone's Midnight Escapades
Tick. Tock. Tick. Tock. Tick… Tock.
Marble stirred in her bed, her raggedy mane covering her right eye as her left stared towards her door, barely making out the shape of its frame in the dark of the night. He clock continued to tick and to tock, and her mind was measuring the seemingly-growing gap between each one.
She should have fallen asleep by now, but she hadn't. She couldn't. She was too anxious. The rocks lining her clock's hands reflected the light of the moon, and she could see where they were positioned. Midnight. Midnight was usually when she came in, and Marble could fall asleep until she was sure that her sister was not going to come.
A yawn escaped her lips and she rubbed her tired eyes. Ten minutes had passed, and her door had not opened yet. Maybe tonight would be uneventful, she thought. Allowing herself to accept that thought with ease, Marble closed her eyes and sighed, her body finally ready to sleep.
… Creak. Creak. Creeeeeak.
Marble wrinkled her nose, but kept her eyes shut. Surely it was just the wind.
She heard her door open slowly, before shutting again, but she kept her eyes closed. She heard hoofsteps moving towards her, but she kept her eyes closed. She felt the cold air against her back as her covers were moved, and she gasped, her eyes shooting open. She had let her guard down.
"Hey, you're not asleep, are ya?" Limestone asked, snuggling upto Marble closely under the covers.
Marble clutched her end of the bed sheet and replied with a meek, "N-No…"
"Yeah, I couldn't sleep, either," Limestone said. She reached a hoof around her sister and brought it down on Marble's crotchboobs, circling around them as her sister began to shuffle and whimper. "Too hot again. I need to unwind a bit."
"L-Lime, we shouldn't-"
"C'mon, it'll be fun," Lime said, clearly not taking 'no' for an answer as she leaned forward and gently bit down on Marble's ear. She continued to rub her sister, her hoof gliding easily along Marble's skin from the sweat she had worked up. "You'll enjoy it if you just go along with it."
Marble wanted to protest, but she knew that it would be pointless. Limestone would just do what she wanted, and she didn't want to start an argument. She didn't want to fight with her sister. Or anyone, for that matter. She didn't like conflict.
Limestone glided her hoof lower, and pulled her sister's head towards her so that she could plant hard kisses on her lips. She extended her tongue, seeking entry into Marble's mouth. When she couldn't get past the barrier, she pulled back and said, "C'mon, lemme in."
Marble hesitated, but then a glare from Limestone caused her to open her mouth slightly. She opened it more when Lime still hadn't moved forward again, blushing as she felt some drool leaking over the edge of her lips.
"Good girl," Limestone said, resuming the earlier kiss and exploring her sister's mouth completely with her mouth. The room was filled with soft moans and wet slapping sounds. Lime's hoof caressed Marble's crotch, playing with every inch and becoming slick as her sister's juices began to pour out.
Marble flinched with each flick of that hoof, yelped with every press of her clit, and whimpered every time it almost entered that special place. She didn't want to get wet, but her body was reacting on its own. She was afraid that it was giving the wrong idea, but she remained silent. She didn't really know how to explain it in a way that didn't seem like an excuse…
Limestone petted Marble with her free hoof, and sped up her grinding with the other. "You're so cute," Lime said as she pulled back. "Cuter than Pinkie or Maud. So cute I just wanna fuck you, all the time."
"B-But we're s-sis… ters…" Marble winced and shivered under Limestone's touches.
"Don't care. If Dad wasn't on the farm with us all the time, I'd rut ya right there."
Marble blushed. She disliked vulgar language, but made no fuss over it as it was half of Limestone's vocabulary. "But it's w-w-w-wrong. If Mum and Dad c-caught us-"
"Then stay quiet," Marble said. "Don't scream or yell and they won't catch us."
Marble simply closed her eyes, gasping as she felt Limestone speed up. "T-Then stop… please." She almost gave a demand, and it made her feel bad. "I-If you keep going, I won't be able to… to… I'll scream, e-even if I try not to!"
Limestone grinned. "Yeah, that's it. Just enjoy it and cum."
"NN!" Limestone planted another kiss on Marble's lips, muffling her cries as she rubbed so fast it might very well have started a fire. "MMM! MM MMMN MN!"
Marble came, squirting over Limestone's hoof and staining her bed. She arched her back involuntarily, grinding her hips against her sister's hoof for that extra bit of release that she craved.
Limestone retracted her hoof and rolled Marble onto her back, spreading her legs and crawling between them. Their lips touched, and Marble had to bring her hooves to her mouth as she yelped louder than she wanted to.
"W-Wai- AH! NN-Nah!" Marble could barely even think straight. She had still not recovered from her first orgasm, and yet, Limestone was already pushing her towards a second. With every thrust of Limestone's hips, Marble felt their lips connect, their clits occasionally meeting and sending shocks down Mabrle's back.
"Yeah, ya like too?" Limestone asked, trying to keep her voice down as her breathing increased. "Damn you feel good! Fuck. Why d'you have ta be so fuckin' soft?! Why d'ya have ta be so damn hot?!"
Marble's eyes were clenched shut as tears streamed down her cheeks, mixing with the sweat caused by the intense exercise. "S-Stopppp…"
"Stop what? You're lovin' this as much as me."
"N-N-N… Notttt…"
"You're not? Then go ahead and yell," Limestone challenged. "Mum and Dad'll come in here if you scream loud enough, and they'll stop it. If that's what ya want, do it." Marble bit her lip, simply focussing on holding back her moans as Limestone continued to thrust. "Thought so."
Marble wanted to cry. Not because of Limestone's actions or her strong words, but because she did not know what to do. She did not know how to respond to Limestone's challenge. She turned her head, focussing on her door as it remained shut. Part of her hoped that it would open, and her parents or her sisters would come in and pull Limestone off of her.
Another part did not want Limestone to get in trouble. She did not want any rifts to form between her beloved family, or to be the cause of Limestone potentially going to jail. She didn't want to cause any trouble…
So she just let it happen.
Limestone was starting to get faster, and louder, though still quiet enough that the mattress itself presented a bigger chance of waking somepony up. "Aw yeah, I'm gonna cum, Marble!" She leaned back, giving herself a better angle to work with and more room to breathe. "Fuck fuck fuck fuck! Marble, I'm gonna fuckin' cum all over you! Oh fuck, you're so fuckin' hot, Marble!"
Marble tried to shut out the profanity, but it only echoed in her head the more she tried to ignore it. "H-Hurry…" She just wanted it over.
"I love you, Marble!"
Marble's eyes shot open, and just like that, Limestone came. She felt her sister gushing all over her crotch, the hot fluids coating her waist and reaching partway up her chest. Some of it got onto her legs, and just a drop-or-two hit her face, making her wince.
Limestone didn't slow down immediately, and Marble couldn't hold back anymore, either. She joined her sister, shooting a second wave, blushing at the sheer amount that came out. She counted the seconds, and they seemed to drag on forever.
Limestone finally stopped, and the two simply lay there together, catching their breathes, their lips still connected as their legs gave occasional kicks.
The sounds of ragged breathing died down, and Limestone regained her senses first. She leaned over to her sister, who rolled onto her side, clutching her mattress and simply staring off into space.
"I love you," Limestone repeated in a whispered voice, kissing Marble's cheek tenderly, before she got up and straightened the covers over her sister's body. "Same time tomorrow," she said, not asked.
Marble simply watched, giving no response, as Limestone left the room, closing the door ever-so-gently so as not to risk waking the others. Once the door was closed, Marble pulled the sheets to her mouth and sobbed.
She hated it. Why couldn't she just push her sister away? Why couldn't she call out for help? Why did she have to feel guilty if Limestone got in trouble? And… why couldn't she love Limestone back?
The tears stopped, and Marble felt fatigue rearing its ugly head as her clock continued to tick and to tock. Tomorrow night, the same thing would happen… and timid little Marble would be powerless to stop it.