"Is Princess Celestia inside?" A guard asked as he approached the throne room, clipboard in hand.
"Yeah but..." The guard at the door shifted side to side, biting her lip.
"What?" He asked, annoyed at the interruption to his duties.
"You don't want to go in right now. They're... arguing."
"Ah. I'll inform the maids about the mess later." He said in understanding, grabbing a new piece of paper and writing a note on it.
She sighed with a relieved smile. "Thank you very much. I haven't been able to get away and-"
"Oh shut UP you pastry filled sow!" The throne room doors shook behind the guard
"Right. I'll be off now. Have fun." He quickly turned away, taking his leave.
She raised a hand to try to stop him. She needed something to stop the awkwardness that came with listening to what was happening in the room behind her. "Wai- Dammit..."
~~~inside~~~
The two royal sisters stood inside, clothes in pieces, exposing their bodies.
The soft, plush body of Celestia. Her white dress was destroyed but she left the scraps on as much as she could. Her curves were accentuated by a slight pudge. Her sheath and balls were a soft matching white, while her soft shaft was pink.
Meanwhile Luna's body was almost the opposite. She'd thrown her clothes to the side after the third or so rip. Toned and tight with it's fair share of scars. Her leathery wings twitched with frustration as her fuzzy tipped ears laid back on her head. Her balls and sheath matched her dark blue fur while her erect shaft was purple and with black mottling.
"Why, I - a sow?!" Celestia shouted back "How dare you! You emotionally unstable madmare!" Celestia shouted as she stomped closer to her sister.
"A madmare am I? Well then I'm sure you'll be understanding when I do this!" Luna shouted back as she grabbed her horn and forced her down into her crotch. Grinding her face against her balls and slowly pulling it above and across her shaft.
"You child! You utter degenerate!" Celestia screamed as she tried to push away. Unfortunately Luna was always physically superior.
"Why don't you try some more crude words? Stop trying to be so Prim and proper. Call me a slut, a whore, a horrible pony. Whatever you want. Just stop being so damn boring!" She complained as her growing cock smeared against Celestia's pink lips. It was clear as day against Luna's cock.
"How dare you! You rapist! You sadist! You- You monster of a mare! How many ponies have you forced yourself on?!" Celestia shouted, only resulting in smearing yet more lipstick against her cock.
"Oh, please!" She shouted as she shoved Tia down. Her plump body shaking as she hit the ground. But she wasn't left alone long as Luna mounted her body, grinding her cock between Tia's generous ass. "How many ponies have you "Gifted" a foal? Whether they asked you to or not. Just because they're retroactively happy doesn't mean what you're doing is any different than me?" She growled
"Fuck off! Your stupid body is so blasted cold!" She shouted out as steam began wafting from between the two. Celestia's hotter than natural body and Luna's colder than natural body created steam on intimate contact. "Gah! You snowpony! Get off me and get your ugly dick away!"
Luna scoffed and continued to grind, threatening to push herself into her sisters ass each time. "Just because your tiny cock is a single color. It makes it no better."
"Tiny?! I'm a natural size. I can actually enjoy the pleasure of mating without breaking them!"
Luna rolled her eyes and pressed her tip against Tia's asshole. "Breaking them is part of the fun~ I'll teach you that much. Though not from my position of course~" luna sneered
"Don't you DAAAAAAAAH!" Tia screamed as she felt Luna's cold cock press it's way into her ass. "GET OUT! GET OUT! GET OUT YOU BEAST!" Tia screamed swinging her arms ineffectively at Luna.
"Oh shut UP!" Luna shouted as she began moving her hips roughly. "You always look down on me. Always have! Always insulting me, always sneering when I bring a pony to my bedroom as if you're any better than I am! I've seen how you look at ponies. That desire to mate. To breed. You deny it but you feel it just as strong as I do!"
Tia continued to squirm and shout at Luna as the she got into a proper rhythm "Get out and shut up! Just because I notice the beauty of mares and handsomeness of stallions doesn't mean-"
"Mmm~ You can't hide it from me. You know all too well that your tiny size makes it easy to hide so you don't even bother. But I notice it. How often you're walking around with a full erection strapped to your thigh. Biting your lip to hide the pleasure. You'd want nothing more than to shove Twilight down and force a foal into her belly."
"N- no! I would never hurt her! Not like you. Not like how you treated Fluttershy!"
Luna moaned loudly, fully knowing that the guard outside could hear "Oh, Fluttershy~ Such a cute little mare. All the noises she made as I used her~ as I broke her~" She cooed, hips moving faster still, getting some gasps from Tia. "And now she's such a wonderful Cock cleaner~ No matter what hole I've been in or who it belonged to, she'll open her lips and slurp it down her throat happily."
"H-how can I be related to such a horrible pony? Such a monster?!" Tia complained, though her panting had now started to include light moans
Luna smiled as she realized she was starting to get through. "Oh please. You'd like nothing more than to be more like me. To finally give in to some of your impulses. To bend your assistant over her desk and rail her throat raw. You wish you could enjoy your urges like I do. Ponies know how I am. They accept what happens if I bring some pony to my bedroom, or around a corner or simply bend them down in the middle of a party."
Tia's moans grew in volume as Luna's railing became more desperate. More violent. "N-No! I'm not some beast like you who will take some poor pony's wife and USE them right in the middle of a room!"
"But you'd like to!" She declared with a shout as she came. A deluge of seed filling her sister's insides, eliciting a scream as cold met hot inside her.
Luna Grinned as she watched Tia's tongue fall from her mouth. That was it. These fights weren't anything new. The sister's hated each other but secretly they held great lust for each other. Hate fucking had become the norm and each time Tia fell further and further into depravity. It was only a matter of time before Tia would happily join her when she takes a pony for the night.
Author's Note
So yeah. Here ya go. These two are where Imma put some of the more dark kinks. My other couples will still be cute with Cheer and kinky with Octy.
also, idk what's up with some of that spacing. I tried to fix it to no avail