Celestia sauntered down the glorious hallways of Canterlot castle, her hoof steps echoing on the marble walls as she made her way to her sister's room. Luna had asked her to grab her second set of star maps as she was busy fixing stars that had gradually lost their position in the sky as well as changed colors. Celestia's maintenance with the stars while Luna was gone wasn't to her sister's specks and she wanted to fix them. Not that anypony would notice.

She arrived at the doors to her sister's chambers, two lunar guards stationed outside it on either side. Celestia smiles at them. "You two are momentarily relieved of your duties." The guards glance at each other before casually walking away. Celestia quietly let herself in once the guards had gone away.

The inside of Luna's room was like what anyone would guess. The walls were painted black and enchanted with a spell that showed the night sky as it was. Some of the stars flickered and moved before flickering again. A real-time star map. It was impressive, Celestia had to admit and the light from it alone was enough to set the room in a thin light that wasn't dark but also was easy on the eyes. It was the perfect 'morning light' and Celestia now thought about having something similar installed into her chambers.

As she continued to look around the room she noticed a group of rolled up papers, rather large ones. They were about as tall as her, not including her extended height from her horn, and were thick like a small novel. Celestia wondered why they were so large and why there were so many of them. She levitated one over and opened it. To her surprise it wasn't a large portion of the sky like she thought it would be. It was actually a smaller portion with no more than fifty stars on it, each with its name and year of creation.

Satisfied, Celestia closed the scroll and gathered the rest. She was about to leave when she noticed a booklet on the dresser in the back corner. Setting the scrolls aside for the moment she causally made her way over, avoiding the various papers littered across the ground. Upon reaching the dresser Celestia levitated the small booklet and read the title.

She paused. "I couldn't have read that right-" she whispered to herself before looking behind her to make sure no one was watching. When she deemed the coast clear she reread the title. "Princess.... Molestia? What in Eques- is that suppose to be me?!"

Celsstia took a good look at the fully colored cover page. It was her dressed in a black leather boots that went almost all the way up her legs and some other clothing she'd never seen before. It appeared to be a uniform of sorts and it too was black. Atop her head was a hat and in her magical aura a whip. She wore a sly grin on her muzzle that didn't promise good things.

"What would Lulu be doing with something like this?" Celestia trivialized as she opened to a random page. Her face quickly flushed red as she stared at the page before her. In it was her standing before her student, who was chained to a wall in black leather boots. She also had a blindfold on and looked to be a little frightened

Celestia took a closer look at the page, curiosity getting the best of her. She examined herself, the detailed pages showing her with a disappointed expression and the frightened Twilight. She was levitating the whip back and forth across Twilight's cutie mark and the mare was tense.

You've disappointed me again, Twilight. Celestia reads the quote bubble above her head.You know what come next, right?

In the next panel Twilight swallows the lump in her throat. I'm sorry Mistress, it won't happen again! the lavender mare pleaded as she struggled against the chains. Twilight then lets out a yelp as the whip strikes her flank with force. She let out a small whimper. Prince~

What do you call me by? Celestia, or Molestia reminded Twilight, readying her whip to strike again.

Twilight bit her lip, her ears flattening on her head. ...Mistress... she replied meekly as she waited for the sting of the whip against her flank. That sting however never came and Twilight relaxed slightly.

Molestia got up close to Twilight. You must be thirst. she cooed into Twilight's ear, levitating a bottle of red wine over. She opened it with a pop and before Twilight could reply she pressed the bottle to the mare's lips. Molestia tipped the bottle up sending the blood red liquid into Twilight's mouth.

Twilight, taken by surprised, had to quickly swallow the first few gulps before the princess pulled the bottle away. Twilight coughed for a few seconds, her mind already starting to swim. She knew she was a light weight and didn't drink often because of it. The bottle was pressed to her lips again and she drank it down more easily this time before it was taken away again.

Molestia grinned at Twilight who was slowly getting drunk. She attached a collar to her neck and connected a leash to that before releasing Twilight from her chains. The lavender mare dropped down onto all fours and wobbled around at bit before the tugging on the leash guided her forward. She took a few steps before bumping into something and fell on her rump.

Open your mouth, Twilight. Molestia commanded, attaching a strap-on to herself. Twilight obeyed with her tongue hanging out slightly. Molestia grinned and rested the tip of the dildo on Twilight's tongue. Twilight -who was now extremely confused- moved her head back to speak, but Molestia stopped her by pressing the tip to the mare's lips. Kiss it. Molestia commanded in a harsh voice.

Twilight took a moment to register the command before gently kissing the tip of the dildo. She was rewarded by Molestia stroking her mane before she felt her head being pushed forward, the dildo parting her lips as it was forced into her mouth. Twilight slowly took the length of the fake phallus until her gag reflex kicked in and she tried to pull back, but Molestia's hoof stopped her.

Keep going, Twilight. Molestia encouraged, pulling her hips back slightly before forcing more of the length into Twilight's mouth. Twilight let out a soft whimper of discomfort as she began to deep throat the toy, her stomach threatening to let lose the wine and her lunch from earlier. The dildo soon hit the very back of Twilight's throat and the mare continued to fight back her gag relflex so she wouldn't get punished.

Twilight felt relief when her throat was cleared of Molestia's toy and she quickly sucked in a breath before the toy was forced all the way in again, this time it seemed to go further down her throat. This motion was done several times until she was swallowing the whole dildo.

After a few minutes Molestia pulled the strap-on out of Twilight's mouth, which was now dripping with her saliva, and admired the mare as she coughed and gasped for air. Molestia began to trot around Twilight, admiring her plot. Twilight, are you ready?

Twilight didn't quiet understand what Molestia meant but shook her head up and down nonetheless. Molestia grinned as she leaned her head down towards the oth-

"Sister!" Luna shrieked at Celestia who had ended up on her sister's bed. Celestia shot her head up to see Luna's flushed face as her quickly flushed as well. "Wh- is that?"

Celestia quickly looked between the adult comic book and Luna before throwing the book over the side of the bed. "N-no..." she replied, her eyes shifting around the room to avoid her sister's look. "I uh... I have to gooooo-" Celestia stopped herself as she couldn't think of an excuse to leave. Finding no way out the room filled with a bright white flash and Celestia was gone, leaving her baffled sister to only stare embarrassed at the spot she was just at.

Author's Note

A friend's idea for a fanfic and he always bugged me to write it so here it is. In other words not my idea. I also decided to not make this very long (sense this was never intended to be a true fanfic). The reason most of the speaking is in Italic is because that's Celestia reading in her head, in case you didn't catch that.
Enjoy~