Luna tried to be honest. She perched on the side of her bed, pondering a new realization about herself. Did it come recently? Develop during her conquest of Celestia? Or had it long lurked within her own subconscious, not fully known until today?

It hardly mattered. The truth of things was that Luna had a very, very strong fetish for hypnosis, and the perfect lover to indulge upon.

That beautiful mare was here right now, tied spread-eagle upon the bed. Celestia’s thick, scrumptious thighs spread to reveal her moist pussy, now dribbling to the sheets after hours of unspent arousal. Piercings with crescent moons marked each nipple, forming perfect hooks to let them be tied or chained. She wore a black blindfold, yet Luna’s magic spun hypnotic spirals upon it to reach the covered eyes. Bringing Celestia deeper, deeper under her control.

Unnecessary. But so hot. She mumbled repetitively into her ball gag until Luna took it out.

“I am Luna’s obedient slave. My holes belong to Luna. I am Luna’s obedient slave. My holes...”

New mantras were fun. And the spirals washed Celestia’s brain with rewarding pleasure. Luna laid beside her, adding mouth and tongue to give a physical element to her sister’s joy. She started at the left nipple, licking all the way down from it into the armpit, fondling the right breast lazily with her hand.

She watched Celestia’s face with half-lidded eyes. The blindfold, the brainwashing spirals, the mouth repeating perfectly its utter submission.

Luna straddled one of Celestia’s legs, letting the thin drip of her own arousal tell Celestia her approval. Somewhere beneath those mindless mantras, her sister would sense and love it.

That was the best part, really. However much pleasure Luna had found these last few years as mistress, Celestia’s was greater still. Her beautiful white sister, at last with a lover who could bring her all she deserved.

Luna continued to simply watch, smiling as her hand moved down to Celestia’s pussy and gently slipped inside. She massaged the clit, neither forceful nor teasing, coaxing more juices out. Lazy, calm lovemaking for a lazy Sunday. Her own light wetness was enough to content Luna. To give Celestia pleasure, to worship her glorious white body, that was all Luna desired.

...And, yes, to mesmerize Celestia, bringing her mind up and down like a yo-yo. That was the fetish, and it gave them so many ways to explore, so many little games to play. Sometimes Celestia worshiped Luna’s dildo, hypnotized into thinking it a real penis. Sometimes she was prisoner in a dungeon, the brainwashed victim of Luna’s coup (mere role-play, of course). Anything that could be believed in the mind or acted in body was at Luna’s fingertips, and in the realm of dreams, even these limits fell away. Asleep and awake, they made love. Luna the mistress, and Celestia the loved and loving slave.

Another realization – Luna had been molded, too. Loving, yes, but a cruel mistress when the fancy bid. Celestia had known pain and depravity, and would so again, and again, and again. Her ass the hole for Luna’s dildo, her mouth the home for Luna’s foot, her whole body tied, locked, chained, stretched to Luna’s whims, all done safely behind closed doors.

Not evil at all. Every touch was a pleasure for Celestia. And when it was not, hypnosis could make it so.

Tonight, though, was a lazy night.

In fact, Luna wanted to talk. She faded out the spiral slowly over a few minutes, bringing Celestia gently up from her trance. She untied the blindfold and pulled it off to see Celestia blinking groggily after the effect.

“Too soon, my love?”

“We all must wake eventually,” Celestia said with kind wisdom, righting herself. “Will you untie me so I can hold you?”

With only a dim glow of her horn, Luna made it so. They cuddled together, entwining legs and arms.

“Was it good for you?” Luna asked.

Celestia gave a happy laugh. “Your every touch is amazing. I think I could cum from you rubbing my shoulders.”

Luna smirked mischievously, resting her head on Celestia’s bosom. “Hm, it sounds like you’re trying to trick me into giving a free massage.”

“Call it a challenge,” Celestia tried. “After all, nothing is beyond my mistress.”

“Tia, I think in my life I’ve broken more shoulders than I’ve massaged.”

“Kinky.”

“Too kinky for me,” Luna said, then kissed Celestia above the breast. “But it seems I can’t say no to you. Next Sunday I shall see if I can shoulder-rub you to orgasm.”

Celestia gave a little kitty-smile of victory. Luna snorted. “Such a selfish slave.”

“Such a loving mistress,” Celestia replied happily.

They settled down, still in each others’ arms before Luna shuffled. “Tia?”

“Hm?”

“How goes the rumor mill?”

Celestia giggled. “Nothing needed but time. I dropped in an interview with a history periodical that we are sisters in title, not in fact. Not exactly a wide audience, but it’s only a matter of time before a gossip rag or major newspaper looking for the next big scoop stumbles across the story. They will ask, I will confirm, and ten years hence nopony will believe otherwise.”

“I don’t wish to wait ten years,” Luna said sulkily. “I wish to write my love for you in the sky this very night, for all the world to see.”

“Patience,” Celestia cooed, still the older sister. She cocked her head. “Although… you may not have to wait so long. There is something I have been pondering.”

Luna adjusted herself, pulling away enough to set her head on a pillow and look at Celestia.

Celestia looked to the ceiling, lying still on her back. “I have been thinking of this for a long time. Even before you became my mistress.”

A slow blink. “Equestria… could be better. Magic and science advance too quickly for me to track. A dozen threats have emerged that we did not foresee, could not defeat if not for Twilight Sparkle. Laws made to protect our ponies are beginning to serve as barriers to peace and union with other races. I micromanage for hours to arrive at the wrong conclusion others take moments to avoid.”

“It will take time. We must school Twilight well, and prepare the transition. But Luna… I think we should retire.”

The pink eyes looked over to Luna. Luna stared, covering her mouth with the a blanket.

It had been Luna’s dream for them to retire, and to compel Celestia to agree. To leave all duties behind and journey where the wind may take them. A little beach house, perhaps. Perhaps later to explore jungles, live the city high-life, or even fly to unknown worlds. Whatever they wished, together as lovers, as wives.

Paradise, as easy as a word in Celestia’s ear. But Luna couldn’t. To rip Celestia from the rule and duties she took so seriously… that, no doubt in mind, would have been evil. Certainly not love, which was the whole point of this all.

No brainwashing, no compulsion, not even a lulling suggestion. This came from no one but Celestia.

“Truly?” Luna whispered, falling in her emotion to formal speech. “Hadst thou well-considered?”

“Yes,” Celestia said, and gave a meek little smile. “Our time is ending.”

“That is an odd way of saying our time...”

Luna leaned over and kissed her. “Is about to begin. Yes, Tia. A thousand times, yes.”

She pulled down the blanket, letting her grin show. She breathed in deeply, then out. “I rather fancy a nice house on an empty beach. We can always give it one or ten years then move on if the life does not suit.”

After such pleasant relaxation, Celestia yelped delightfully as Luna ambushed her with a tweak of the nipples. Luna did not let go, gripping the metal crescent to pull Celestia closer.

“What do you think, slave?”

“I would like that very much,” Celestia breathed. Their lips met, their tongues crossed. Luna pressed inwards, crushing their bodies together, though kept her hand pinched firmly on Celestia’s nipple.

When the time to retire came and went, the sisters ended up building their little beach-side house. Which, while ‘little’ by their standards, had enough space for a balcony, a full kitchen, a guest room, an art room, and a ‘hobby room’ (that is to say, a sex dungeon). The spot was chosen carefully – secluded, yet close enough to a small town with grocery stores and volleyball tournaments.

Luna adapted to a daytime schedule, letting Celestia cook indulgent breakfasts for them every morning. It was something the sun princess loved, and Luna coyly made it her ‘slave duty.’ Watching Celestia cook wearing nothing but an apron and ankle-chains was a treat more decadent than her thickest pancake.

Ever the socialite of the pair, Celestia visited often at the town, joining their little games while Luna usually contented herself reading and sunbathing. Always, of course, Celestia would return. Some evenings they lounged in the surf together, naked and entwined. On cooler nights, the bed beckoned. On randier nights, the dungeon. Or they would just take long walks until dawn, hand-in-hand, leaving footprints along the beach.

Sisters and lovers, mistress and slave.

Author's Note

We shall leave to headcanon the question of just how much Celestia was really affected. Was she truly controlled? Playing along? Or some combination of the two? After all, to be hypnotized one must be willing to lower the guard...

Thanks all for reading! This is my first endeavor into writing hypno-clop, so I hope I gave a good time.