Twilight finds herself on the steps leading up to the Canterlot Castle just three days later. Her mind is a blur of worry - Is this allowed? Is this okay? Will Celestia be mad at her? - but she pushes through, forces herself up the stairs and into the castle with a practiced smile on her face. Anypony who knew her well would see her anxiety, but the guards just see another Perfect Royal, so she makes it into castle without any interruptions. She had sent a letter asking if she could stop by, and Celestia had told Twilight to come 'Directly to her chambers at 3pm on Tuesday', which sounded both formal and intimate and Twilght was having trouble processing. But here she was, standing outside of Celestia's chambers at 2:48 PM, staring anxiously at the clock and awaiting the time to knock.

She needn't wait for 12 minutes though, as she heard soft metallic clicking on the floor behind her, and a familiar voice call out. "Ah, hello Twilight! Early as always, I see." Celestia greeted Twilight just as she turned her head to see who was approaching. Yellow magic enveloped the door handle in front of Twilight and slowly swung it open, revealing posh yet strangely barren bedchambers. "Let's head inside, Twilight. I can guess what you've come to see me about."

Twilight gulped as she followed her mentor into the bedchambers. Celestia hadn't sounded angry, but her tone had been one Twilight had never heard before. Celestia headed straight for the bed, kicking off her golden boots and climbing upon it with grace. She pats the area beside her, giving Twilight a warm smile. Twilight smiles back nervously, eyes flicking around the room as she climbs slowly onto the wide, soft bed. She hears the door close behind her as she does, and barely suppresses a squeak.

"So?" Celestia asks once Twilight has settled, her smile gentle but a mischievous glint in her eyes. Twilight tries to smile, but it just feels like her facial muscles are pulled tight.

"S-So, I, Uhh..." Twilight starts, trying and failing to look Celestia in the eye. "So...Bartending?" She manages, finally, praying that Celestia doesn't force her to say a full sentence.

Celestia laughs, hearty, and nods. "Yes, Bartending. Somepony has to, and since I run the place -"

"You WHAT?" Twilight yells, unable to stop herself. "Well, I, Sorry, Celestia, I just...I didn't expect that, you...you run a secret fetish bar?" She quickly backpedals, stammering when she notices Celestia's moderately worried glace towards the door.

"Indeed, Twilight. I started it, in fact. Around the time I banished Luna, I realized I had a void I simply needed to fill, so i set about finding out all the darkest parts of me. Being comfortable with even the grossest parts of ourselves means we know how to handle when we want to do bad things. And, having seen Nightmare Moon yourself, I'm sure you understand how important that is to me, Twilight, especially around that time." Twilight nods as she listens to her mentor, enraptured by knowledge and understanding.

"Once I realized that we all have dark places, I quickly set about conquering my own. I found ponies who were willing to kneel beneath me, even begged me to stand over them...And I realized that I like hurting ponies, Twilight. Only when they want me too, of course, but..." Celestia pauses, taking a deep breath. She seems almost lost in memory for a moment, before continuing on. "I fantasized about the pleading, the begging me to stop. And after a good long while of searching, I realized that there are ponies who love that. They want to feel forced, raped. 'Consensual Non Consent', I began calling it, and the name has finally caught on here recently, thankfully. Anyway, When I found somepony I could really let loose with...I discovered how relaxing it is. How freeing. I wanted to give other ponies a chance to explore these thoughts as well. I started Masquerade, under a disguise, to give everypony who could be considered a 'deviant' a place to do deviant things. Nothing wrong with that, I believe. I haven't told Luna yet, just so you know, Twilight, so please don't mention this to her."

Twilight nods in stunned silence. She hadn't expected....well, any of that. Especially not hearing her esteemed mentor and princess use the word 'rape'. She looks at Celestia, really looks at her for the first time in awhile, right in the eyes...And she sees sincerity, and clarity, and an aged mare who is fully comfortable in her own fur. And finally Twilight relaxes, and smiles, and speaks her mind. "I've always wanted to experience things, all of the things to be honest...And when I was a foal I'd experiment with, y'know, weird things when I'd masturbate. Like sewing needles, and ice cubes...I started really early," She laughs, looking down at her wing and fidgeting with it. "My mom told me to stop and always freaked out when she saw me do anything weird, so I kind of figured it was bad, you know?"

Twilight takes a shaky breath, about to cry, and feels Celestia's wing wrap around her. She allows herself to be pulled in and hugged, and rests her head on her mentor's shoulder. "I was so happy and so scared when I got the flier, I...I wanted so badly for it to be Okay b-but I was so anxious that it would get out that the, he Princess of Friendship is a freak, you-you know?" Twilight is crying now, stuttering, holding herself tightly against Celestia's side.

Celestia holds her tightly, refusing to let go until the last shudders pass.

When Twilight wakes up, it's dark outside, and Celestia is walking back in from the balcony. "It's okay Twilight, the sun just set. You've been asleep a couple hours." She says, a warm smile on her face as she climbs back onto the bed. Twilight blinks and yawns, looking around the room. Several candles and lanterns are lit, casting a warm glow through the bedroom.

"If you'd like to stay the night, you always have a guest room open." Celestia begins, looking directly at Twilight. Her expression turns serious. "But you're also welcome to stay here, with me. If you'd like to keep coming to the Masquerade, you're welcome to no matter what you decide - but I want to offer you some guidance, a...Helping hoof with your first time doing something more extreme, if you'd let me. Don't feel pressured, of course. We can just talk if you'd like. But - I can see you wanting to ask me - Yes. I'm serious. I would like to be your Mistress for the night, Twilight, if you'd let me."

Twilight is beyond shocked. She's awake now, definitely. She doesn't know what to say. A strong, normal part of her wants to run, to say "No, thank you though." or "Let's just talk?". But inside she knows that she wants to. And their earlier conversation crosses her mind. This is...healthy. It's normal.

Celestia wont call her a freak, no matter what she wants to do.

Twilight nods.

"I need to hear you say yes, Twilight. Consent is the most important part."

"I...Yes. Yes, I'd love to, Celestia."

Celestia beams, the happiest Twilight has ever seen her. Her grin could melt glaciers, Twilight can't help but think.

"So, Do you know the stoplight system, Twilight? We're gonna use Red for stop, Yellow for slow down, and Green for keep going. I'll ask you for a color regularly. Red and Yellow are our safewords, meaning they are standing in the place of 'Stop', 'No', 'Don't', or anything similar. You have to say red to get me to fully stop. Do you understand, Twilight?" Celestia speaks with absolute authority, the voice of somepony in charge, who knows that they're in charge. Twilight nods quickly, sitting up on the bed. "Oh, and Twilight? Call me Mistress, tonight, and any time you see me in the club." Twilight nods again. "And address me by voice, Twilight, every time that you can."

"Yes, M...Mistress." Twilight says, her face flushing and her ears back. Celestia smirks and hops off the bed, turning to face it. She caresses Twilight's cheek, her hoof trailing slowly down the lavender mare's neck and onto her chest, pushing her onto her back on the bed.

"Stay very still for me, Twilight. I'm going to grab some things." Celestia says as she turns around, and walks towards a lone closet on the wall farthest from the door. She disappears inside, leaving Twilight sprawled on the bed. Her tail is curled up between her legs, wings twitching anxiously. Celestia is back out before she can get too anxious though, a roll of black rope around her neck and a small, red velvet case held in her magic. "Stay still, Twilight," Celestia says as she walks up and Twilight turns to look at her. Celestia gently turns Twilight's head back towards the ceiling, sets the box down on her nightstand, and begins to tie Twilight up with practiced speed. It's a simple tie, one piece of rope keeping her forelegs against her sides and another - utilizing small metal rings on the sides of the bedframe - keeping her torso and wings down against the bed.

Twilight struggles briefly against the ropes - more to test their strength than to try and get out - and finds herself very thoroughly restrained. Her legs clench together, a sudden warmth making itself apparent. She glances over to see Celestia opening the small box with her magic, and levitating out...A large needle, or Pin, capped on one end with a small piece of plastic.

"Hearing about how naughty a filly you where gave me such awful ideas, Twilight." Celestia says, practically growling, her grin filled with malicious excitement. "Do you like pain, Twilight? Do you like seeing your sweet lavender fur blot red? I know that I will. I'm so excited to see." Twilight gulps, eyes wide, body shaking with fear and excitement. She feels warm and tingly and alive in a way she never has before.

"Can you give me a color, Twilight?" Celestia asks, running the dull end of the needle in tight circles around Twilight's bellybutton. Twilight jumps at the feeling of cold metal, but is barely able to move. Twilight nods, but after a moment of Celestia's movement not changing at all, finally remembers to speak.

"Green....Mistress." Twilight murmurs, throat tight and voice heavy.

Celestia goes to work with purpose, but in no rush. She takes the needle and brings it over to Twilight's collarbone, pinching the skin up slightly with her magic. Then, not slow but not fast, presses the pin through. Twilight jumps - as much as she can jump - and yelps with surprise. Her legs remain clenched together, her thighs grinding together slowly.

"Color?" Celestia asks.

"Green!" Twilight gasps, panting. Another needle comes out of the box, and goes into her opposite collarbone with the same precision and pace as the last.

"Color?" Celestia asks, again, and Twilight's response is the same. And like this they continue - one in each collarbone, three in one foreleg and two in the other, until Twilight's response changes.

"Yellow!" She sobs out, her cheeks and muzzle soaked with tears. Celestia smiles warmly, sets the box down, and climbs onto the bed with Twilight.

"I'm so proud of you, Twilight." She says, nuzzling Twilight's stomach. She gently pushes Twilight's thighs apart, and much less gently buries her face between them.

Twilight gasps, loudly, and barely chokes out a "Thank you Mistress!" Before she's too far gone to speak. Her legs are a crushing weight on either side of Celestia's head, trying simultaneously to pull her in and push her away. The pleasure and pain are overwhelming, small dots of blood forming around the piercings as her body thrashes against the ropes. She needs more, less, more, less, more more more. Celestia's tongue dances dizzying circles on her clit and the pleasure is so overwhelming that she can't focus on anything at all.

Twilight comes like a freight train, squirting into Celestia's mouth and in an arch above her head. A strangled screams comes from her mouth as she practically seizes against the ropes, then fades into a low groan as she falls limp into bed. Celestia is up in a flash and quickly unties the rope, careful not to jostle Twilight as she removes it all and throws it off the bed. Then she settles next to Twilight and carefully wraps a wing around her.

"Hey, Twilight, Sweetheart, are you all right?" Celestia asks, concern evident on her face. Twilight cuddles into her side, wincing as her piercings move.

"That was...Wow. Ow." Twilight says, barely able to keep her eyes open. She shifts, and again groans in pain.

"I'm glad to hear that, Twilight. I'm going to take these out now, okay? I'm gonna need you to stay very still for me, Twilight, and just let me know if you need me to stop and hold you, okay?" Celestia says, pulling a paper towel and two wrapped sanitizing towels out from her nightstand. Twilight tries to nod, but hisses as the pain from her chest catches up to her.

Celestia starts there, quickly pulling each pin out and putting them on the paper towel. Twilight winces and cries a little each time, but does not ask Celestia to stop until they're all done. "Last one, Twilight, I'm so proud of you." Celestia says, planting a kiss on Twilight's stomach as she pulls the last pin out of her foreleg. Twilight sobs in relief. "Just going to clean you off now, then we can cuddle and go to sleep, Okay Twilight?" Celestia says, kissing her tummy a few more times before opening one of the towel packets. She wipes down all of Twilight's wounds, the alcohol only stinging them a little, then tosses the used towel. She quickly opens the second one, and cleans off the pins before putting them back in the box and closing the lid.

Then they lay together, Twilight curled into Celestia's chest, and hold each other as they fall asleep. right as she drifts off, Twilight murmurs...

"Thank you, Mistress..."

Author's Note

I spent awhile googling to see if it was Lore appropriate to say 'tuesday' in this fic and couldn't find shit all about equestrian dates

So I was like. It's porn so whatever lol, I can say it's Tuesday. And then suddenly nearly the whole chapter was Feels and the porn came later, haha.

There will be more to do with the Club in the next chapter, but i wanted to go ahead and publish this now. ^-^ Let me know if you liked it, and any kinks you want to see in future chapters!