Contains: some sexual dialogue.

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Celestia collapsed upon Luna's chamber floor, feeling her power restored to her but not needing it. Her enemy was felled, but not by her own hoof. "Bu–but how? Sister, how did you know Denclop was loose?" Celestia asked, getting a gentle smile from Luna in return

"You see sister..." Luna started, only to be interrupted as Celestia suddenly realized something.

"I'm...I'm so sorry sister! I know what that... thing must have done to you and I'm...I'm so, so sorry I couldn't stop it. If only I could have stopped it earlier when It counter–traced my tracing magic, came to my chamber...and...and..." Celestia broke down in tears – only to be surprised to find her sister right beside her again, her wing wrapped around her back and her muzzle rubbing comfortingly against her own.

Celestia was quite surprised; she should be the one comforting Luna! "S–sister, how could you possibly be com–comforting me? It must have been h–horrible for you, having to go through that b–bucking thing forcing itself on you again. I r–remember last time..." Celestia continued, only to hear a calming shushing coming from her sister – feeling another nuzzle against her and feeling herself calming down, her shaking reduced to minor tremors as she felt her sister's embrace.

As Celestia turned to face her, she saw a soft smile remaining upon Luna's face. "Dear sister, It's OK. It really is. I am unharmed, and honestly, actually feel much better now that my heat has been ended." Luna said, hearing Celestia's crying now ending altogether.

Celestia then noticed Twilight again, laying behind Big Mac and apparently awoken and concerned over her crying. As Celestia indeed realized she'd smelled two separate pheromone scents earlier, she noticed what this implied – two mares in heat in the same room as stallion possessed by a mask programmed to believe it was a breeding Goddess...

"Oh my...Twilight, were you...raped too? I'm...so..." Celestia asked, only to cut herself off as she saw the named shake her head softly.

Luna spoke up from behind Celestia, "No sister, we were not raped by Denclop. We both willing submitted to its Vessel and were seeded by him. You see Celestia, we both wanted a foal."

"A f–foal? Sister, you can't... how could you possibly think you could get pregnant by this stallion?" Celestia asked in disbelief, thinking now that Denclop had finally gotten to her sister and brainwashed its insane dogma into her – making her think that it had made her pregnant somehow.

"Sister, whatever Denclop said to you is a lie, it must be. That thing told me the same lies as it held me down against my will and filled my belly with its seed..." Celestia said, remembering back to the feeling of helplessness as she was forced to breed – but at the same time remembered how gentle it had been with her at the start, the massive, constant orgasms she'd been given, and the feeling of utter contentment and total sating of her heat after. Usually when she bred with a stallion, there was still a latent burning from her heat no matter how many times she bred, only ending fully at the end of her five-day cycle. This time however, even as she sat there speaking now, there was no burning and not even the slightest itching. Celestia felt nothing but the pure satisfaction of the light, warm weight of semen still within her belly and her breeding instincts completely docile. But surely she didn't even even remotely believe...

"Dearest sister, surely you don't believe that that thing could get you pregnant, do you?" Celestia asked, her tone skeptical to say the least. "You haven't ovulated for thousands of years, and you think just because some old breeding mask possessed a stallion and...mated...with you, that it somehow magically got you pregnant?"

"Celestia, I know for a fact that any intact mare that is bred by that mask's Vessel gets pregnant..." Luna stated, letting it sink in for a moment as she watched the gears within her sisters head turning – but she needed to be sure though before confirming to her. "Celestia, you did say Denclop's vessel...climaxed within you, correct?" she asked, watching Celestia wince at the question.

"Y...yes, but what does that have anything to do with anything?" Celestia answered flatly – then watched as her sister's concerned look turned to a wide smile.

"Congratulations then sister, you're going to finally have your foal!" Luna announced, walking over and giving her sister a gentle hug.

~

"Si–sister?" Celestia heard, opening her eyes and feeling a gentle throbbing in her head. She realized she was laying down on the bedroom floor, Luna and Twilight standing over her and feeling a numbness in the now–asleep wing pinned beneath her. As she stood up, the world spun briefly before she fully came back to, her eyes then focusing on her sister's still–smiling face. Apparently she had fainted briefly.

"I know, 't'is wondrous news is it not sister?! You are finally going to have the foal you've forever wanted – and Twilight and I are going to be having foals as well!" Luna exclaimed upon seeing Celestia was OK, fidgeting in excitement in a way she'd never really experienced before since she was a foal.

"Luna...this...this isn't possible – you and I cannot be pregnant. We haven't ovulated in over a thousand years, and a mare simply cannot conceive without an egg." Celestia told her sister, not wanting to upset her but needing to snap her out of her delusion – but noticed she'd failed when she realized that Luna's enthusiasm was unabated.

"You mean...Starswirl the Bearded did not tell you sister?" Luna asked, her own joy slightly suppressed upon seeing her sister's sad expression instead change to one of confusion.

"Starswirl the Bearded? Starswirl told me everything! He was my right–hoof stallion, basically third in charge of everything! Of course he..." Celestia stated – but did she truly believe that? She had always distanced Starswirl from her regarding the entire Denclop incident, losing interest in the entire fiasco after Luna had been mounted before her and she'd done as her instincts demanded, betraying her sister at least in her own mind. She remembered a few times he'd tried to speak to her regarding Denclop, but she'd refused to listen and had told him to simply leave or blindly told him to just destroy the mask.

"Sister, how could you possibly have wanted to be bred by the same...thing that raped you all of those years ago?" Celestia asked her sister, remembering back for the thousand-and-tenth time to when the possessed guard had forced Luna to the ground and humped roughly into her, forcing her sister to be bred against her will...and remembering her sin of masturbating to it.

"Sister, you still think that was a rape? Celestia, I told you right after that happened that it was just another stallion during my heat and t'was not a lie. If you wish to know the whole, unabashed truth, I will tell you – I seeked Denclop out and submitted to it then too." Luna said, unknowingly dropping a bombshell on Celestia.

Luna...Luna had been willingly bred then too?! But if that was the case, why had—"But sister, why did you run crying to your chamber after you were dismounted, then remain in there for over a day if it was a willing breeding?" Celestia asked, detecting the small hole in Luna's story and trying to capitalize on it.

"Sister, if you were interrupted during sex in a bad heat, what would you do for over a half of a day?" Luna asked flatly, then watching an understanding look form in her sister's eyes and heard a quiet 'oh' from her lips. Nodding, Luna confirmed Celestia's thoughts; "Yes sister, I invited a stallion to my chamber to sate me – but with the knowledge it was just another mating instead of what Denclop's Vessel could have given me. That that time, it was not a stallion who could get me pregnant. That is also why I ran crying, because I did not finish with Denclop and was denied the possibility of having a foal."

There she went again, insisting that Denclop could get her pregnant! "Sister, can you tell me where you get the impression that this mask can somehow magically get a mare who can't conceive with anypony else pregnant? Do you truly believe that a breeding mask is possessed by the spirit of a Zebra goddess who doesn't even really exist?!" Celestia asked, letting everything out into the open.

Luna simply smiled. "I suppose Starswirl didn't tell you of the trip we made to the Zebra homeland a few months after Denclop was loosed the first time, did he?" she asked, getting a shake of the head from Celestia. Luna supposed it was time to tell her given their situation, never before wanting to bring up such unpleasantness for Celestia with how distant she always got whenever Denclop was even mentioned, but thinking now she'd be more than willing to listen after tonight's events.

Instead of speaking again and knowing she'd need proof of her tellings, Luna instead got up and walked over to her bedside table. Soon after she produced a large notebook, its pages slightly yellowed with age but otherwise perfectly preserved. As her first glance landed on the distinct profiled silhouette on the front, Celestia knew it was the personal journal Starswirl always to use to record everything – from his experiments to his spell notes to anything else he viewed worth noting.

"Luna, how did you get that?" Celestia asked, knowing that she herself had been unable to unlock the box that had contained it earlier, given the silencing spell from Denclop had still been present on her then.

Luna shrugged, then flipping through the pages briefly, skimming for the section she was looking for. "Well, the box it was in was downstairs. I figured I'd need proof to back what I may need to tell you, so I unlocked the box and took it out shortly after finding the box upon arriving home." she said simply, as if it was no big deal to her.

"But the box it was in was locked with a spell only Starswirl and I knew!" Celestia exclaimed, not knowing how her sister, whom she'd tried to keep sheltered from this, knew how to access the chest at the center of it all. "...and how did you know you would need the journal? How did you know...or even think...Denclop was loose again?"

"Dear sister...Starswirl taught me the unlocking magic soon after the mask was developed. He told me that despite you wanting the spell to only be kept between you and him, he knew that surely such a dangerous mask's killcode shouldn't be entrusted to only to you, given your own infertility and view on breeding in general. As for how I knew it may be needed, I received a copy of the note sent regarding Lyra Heartstrings as well." Luna explained as she closed the journal and held it out to her sister, having found what she was looking for; "Maybe the journal can prove to you what I clearly cannot. Page 73." Luna said simply as she saw Celestia's magic surround it, watching the book then crack open as Celestia moved to the page she'd been told.

~ ~ ~

105th Day of Celestia, this 1,088th Spring of Our Princess' Rule

This day, I was informed that the Denclop mask was activated again and was summoned to stop it. As I called out the kill command, which I shall write later should it be needed, I noticed that it had mounted and attempted to breed our Princess Luna! I was fortunate to stop it before the possessed guard had climaxed within her, for that may have caused a whole heap of problems for everypony involved. It was bad enough it had bred our royal assistant, let alone one of our Princesses too! After the mask had been disabled and Luna had retreated to her chambers, Celestia told me she wanted the mask destroyed, no matter the cost. I believe that this is a horrible waste of the potential good this mask is capable of, but it is a Princess's order and I cannot decline it. I will destroy the mask tomorrow.

106th Day of Celestia, this 1,088th Spring of Our Princess' Rule

This day I tried to destroy the mask as Celestia demanded, but found myself unable to. As I attempted to cast the disintegration spell, I quickly found that the mask had summoned an anti-magic force-field of a strength even we Unicorns are incapable of casting, and no matter what spells or physical attempts we tried to use on it to end that spell, we could not. Call me a loon but I believe this mask acting seemingly in self defense, as I did not give the mask knowledge of this spells nor the concept of self–preservation. It must have learned about these through the unicorn guard's memories and/or in a spell book. If this is fact and the mask can learn new spells and ideals, this mask may be the biggest threat the dignity of the ponies of Equestria may ever face.

I told Celestia about the mask and she again insisted I keep trying to destroy or otherwise neutralize it, insisting that if I could not physically destroy it then I was to attempt to destroy its enchantment instead. I once again question Princess Celestia's destructiveness of such a potentially useful item but I will not voice my opinions regarding this sensitive subject to her – lest I possibly find myself stripped of rank, banished or worse.

107th Day of Celestia, this 1,088th Spring of Our Princess' Rule

Today, I attempted to sabotage the mask's enchantment by simply disabling its main driving goal – but it would seem my spell only altered it for some reason. Magic is strange that way sometimes. As I read the enchantment again however, I noticed that the alterations were significant. I will list the known ones thusly:

Firstly, it seems that my alteration made it so the mask's spells couldn't manipulate the breeding instincts of stallions other then its own vessel. This is for definite a boon, as if Denclop were left with its old abilities of making every stallion go into rut and managed to escape for an extended period of time during a breeding season, all fertile mares would be impregnated by random stallions, making finding the foals' paternity a nightmare.

Secondly, the mask will now only make its Vessel mate with mares who, beyond simple instinct, want to be with foal and become a mother. Fortunately, this will result in ending instances of rape and unwanted foals if the mask should be reactivated accidentally in the future.

I tried to inform Princess Celestia of these developments, but she was simply upset that the mask was still functional. She requested it to be given to her, and so I did as told.

As previously written however, I now realize the kill–code may be needed later if I nor Princess Celestia can destroy the mask. One would speak thusly to deactivate the mask, should it ever be reactivated accidentally: 'Denclop, thy Duty is fulfilled. Sleep, for thine breeding season hath ended.'

~ ~ ~

Luna watched as Celestia read, watching her shocked expression grow. As she finished reading however, Celestia realized that she already knew all of this – except about it breeding only with willing mares. This brought up a few questions about why it'd chosen her to visit, though wasn't it obvious? All those heats forcing stallion after stallion to fill her with their seed until they were drained dry, using everything her zebra friends and Canterlot wizards could come up with to try and have a foal...but even still Celestia remained skeptical, still not knowing how this was relevant at all. "Sister, what exactly is it you're trying to prove? That the mask truly is possessed by the spirit of a zebra goddess and knocked me up?" Celestia asked, obviously sarcastic.

Luna just chuckled – "Sister, please just continue reading. Page 97 will answer more then I can." Celestia didn't see the point, but with a sigh she did as asked. After all, she was most curious now.

Could she possibly be wrong after all?

~ ~ ~

247th Day of Celestia, this 1,088th Spring of Our Princess' Rule

It has been about six months now since Denclop was activated and allowed to assist the tribe of Zebras with their population problem. Princess Luna has just asked me in joining her to go and see how they are doing and to discover if the mask was a success. We asked Celestia to join us as well, but she claimed that she needed to keep a watch on the kingdom – an understandable obligation and excuse, but I think she just wishes to avoid the subject of Denclop altogether after the incident...

A short while later, Luna and I set off through the Everfree Forest with a small group of Royal Guards for protection. When we arrived at the Zebra's clearing without incident and were welcomed by the whole small tribe, Luna having sent a letter to the chief previously to tell of our coming, we quickly noticed that every mare there was indeed with foal, their six–month baby bumps clearly visible. We both then happily realized that soon, the tiny village would no longer be so small in a few more months.

As we saw an elder mare well past breeding age pregnant with a foal as well however, Luna asked how that had happened. The chief had explained that when the village was in the breeding frenzy brought on by the Denclop mask, the mask whom he'd been chosen to be the Vessel of had chosen that exact mare and had made him breed her despite her not having ovulated in twenty years, using the mist on her before planting his seed deep within her and moving on. Apparently his seed had taken root and grown, even within the once–infertile mare!

I have a theory that the 'breeding mist' that the Denclop mask releases contains a magical anomaly that is unique to the mask, and that it can cause even long–infertile mares to be able to ovulate again provided their reproductive systems are physically whole, breathe the mist, and are bred by Denclop's vessel or possibly those affected by it. After all, what else would explain how a mare who hasn't ovulated in so many years would be able to bear a foal, even after being incapable with any other stallions?

I would love to test this theory, but Celestia insisted that—

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Celestia could not finish the entry, dropping the book as the realization settled in now that there was proof – she was almost definitely with foal, as well as her sister and virtual daughter too! Realizing that this stallion in this heat had finally gotten her pregnant and given her a foal, the one she so desperately had wanted for so many years! That Denclop had not lied to her after all!

Celestia then started prancing around the room like a filly who had just gotten her cutie mark, yelling 'Yes!' repeatedly in a rather foalish manner and flapping her wings excitedly. Neither Luna nor Twilight could blame her however, their own excitement very prevalent, if more well contained.

~

After the excitement died down somewhat, Luna found herself thinking about her own actions on Big Mac and about how Mac would still have to be asked who he'd been forced to breed then tried for his actions, given Equestrian customs and that his seed would bear the foals of all the other mares he'd potentially been forced to rape. The same mares who would likely demand justice, with it being a miscarriage of justice on the princesses' behalves if he simply was let off the hook willy-nilly. But all of that was another time, and for now Luna watched her sister happier then she'd seen her in so many years, hoping that the mask's powers still lasted even after those thousands of years to give them the foals they always wanted.

After some more celebration and generally merriment, Luna spoke up. "Sister, Twilight, if you are tired feel free to go back to bed. You can trust me to watch over Denclop's ex–vessel and mask." Getting nods from the other two, Celestia and Twilight now departed Luna's chamber, leaving Luna alone with Big Mac and the mask. She then settled down next to the stallion on her bed, cuddling up to him before falling asleep. She then went to the dream realm to try and find those Denclop had bred with, carefully sorting through all the Ponyville mare's dreams in order to look for clues.

Surely there would be much more to come of this in the coming months if this red stallion were corrupted...

Author's Note

So they may be with foal after all!

I'm unsure how to continue this, so the final chapter may be a while more.