Celestia waited patiently in her room, waiting for her to get back with what she had discovered about Death Petal’s potion. She was tired, tired from the events that had been transpiring since Death Petal’s secrete had been blown, which was causing all sorts of ruckus in the court. But the biggest thing that was causing her to be tired was the news from her sister, for she had been told by Luna that she was going to partake in blood mating again.

Celestia sighed, as much as she had come to realize how much her sister needed to sate that hunger, she still viewed it as a sickness, something that plagued her sister and not something to be enjoyed. But the nightmare had taught her different, and she understood that her sister needed this…no matter how much it sickened her.

Finally the doors opened to her chamber, and Celestia smiled when she saw it was Twilight, walking in with the potion clutched in her magical grip. “Have you found anything?” she asked, patting the empty spot on the bed next to her as Twilight climbed into bed with her.

“I did, and you’re not going to believe me when I tell you, but Death Petal has managed to bottle immortality.”

“What?”

“I know right, this is amazing! I don’t know if it’s the use of the alicorn stones or a combination of all the other ingredients, but she has some how managed to replicate in liquid form the same kind of energy that transformed me into an alicorn like you. Now admittedly from what she described the process of transformation is completely different, but the results are exactly the same, the creation of an immortal alicorn.”

Celestia stared at her in disbelief, slowly absorbing the information as she stared at the bottle of neon blue liquid. Bottled immortality, controllable bottled immortality…such a thing she had been looking for since she had been first turned into an alicorn by her mother long ago. She had tried, for thousands of years to come up with an easier way to grant immortality to those who she knew deserved it, to those who belonged with her in the diminished pantheon of the gods. She had tired and failed hundreds of times, and had eventually given up on ever coming up with a solution, and now this little mare had succeeded where she had failed.

“Ha…have you told anypony else about this?”

“No, just you Celestia, I figured this wasn’t something you wanted shouted for all to hear.”

Celestia nodded, smiling at her student’s forward thinking. “You’re quite right; this isn’t something neither of us can go shouting about. This will have to be handled delicately, for if the general nobles get word of this it will mean an uprising, all of them will want it.”

“I know Celestia; believe me I know, but thankfully part of controlling it is already taken care of.”

“What do you mean?”

Twilight giggled the potion a little, “it can’t be used by anypony except the pony that provides the blood, which means we can regulate it easier because of that. As for making sure no other pony makes it, we have that covered to. One, the only ponies who know what are required are you, me, your sister, Death Petal, and her mate. Two, one of the key ingredients is the hardest to get, death petal can only be grown naturally by alicorns, and that process alone takes hundreds of years.”

“But my student you forget, the way she was making it sound is that she can grow these plants much quicker, which could be exploited if were not careful.”

“I know, but nopony knows that but us, and how many ponies actually know of the herb other then in legend?”

Celestia had to admit, her student had a point. Not many ponies new about the death petal blossom, and those that did all thought it legend, so the likely hood of them discovering such was very unlikely.

“Well, I shall trust your judgment in this case, now come rest with me dear, you have been at this all night.”

Twilight nodded, then laid her head down as she set down the potion, falling to sleep as Celestia draped a wing over her, lying down beside her and closing her eyes for the night.

* * *

Luna sat up in the bed, gazing down upon her two new lovers as she remembered the night they had shared, smiling as she ran a hoof over the bite marks on her neck. It had been years since she had partaken in mating of this kind, and she had to admit she had missed it far more then she remembered, despite how much she knew it sickened her sister. She shook away that thought, deciding to instead think about the exciting conversations she was going to be having with Fluttershy when she got back home, and that was when she froze.

She quickly went over the events of yesterday, trying to remember when she had told Fluttershy that she would be spending the night with Death Petal and Fuedal. After quickly going over everything however she realized she hadn’t, and that’s when she started to panic, getting up out of the bed and pacing, accidentally waking up the two sleeping love birds.

“What wrong Luna?” asked Petal, getting up and nuzzling into the distraught mare as Luna tried to calm herself down.

“oh I have just been horrible Petal…I…I forgot to let my mate know that I would be spending the night with you, and I know she will be most distraught when she finds out I went to you without her consent, oh what am I going to tell to my dear Fluttershy?”

“What!” shouted Petal, backing away from Luna and staring at her in shock. “I…I slept with my best friend’s mare…I marked my best friend’s mare…oh no oh no oh…”

Luna placed a hoof on her mouth, stopping her from rambling as she spoke. “Petal it will be alright…Fluttershy will understand; she knows I need this, I just…I just don’t know how to tell her…”

Petal gazed at her for a moment, and then her eyes lit up as she got an idea. “Luna, what if I told you I could give Fluttershy a way to sate your other urges?”

Luna’s eyes bulged, a look of pleading and hope dawning her face as she gazed at the young alchemist, “you…you can do this?”

Petal nodded; her mind beginning to race as she thought back to the potion she had backwards engineered from her alicorn potion. “Yes I can, but I will need one thing to help um…smooth the transformation over, like the alicorn potion this one will force her to grow those new parts, but with your help we can make the process less painful.”

“But what can I provide?”

“Um…a strand from your mane…”

Luna looked at her skeptically, causing her to continue. “I know what your thinking, but I know from my books that alchemically alicorn strands contain healing properties, and can be used to help smooth over potion like the one I intend to make.” she then turned to Fuedal, walking over to him and shaking him, for he had gone back to sleep due to being tired. “Hey love, do you have anyplace I can set up shop, I would like to make a potion for Luna if that is ok?”

“Basement stairs, second door on the right is empty; you can move your stuff in there.”

She smiled, knowing he meant permanently but was too tired to say it. “Come on, this wont take too long, and then you will be able to go to Fluttershy and ask her if she is willing to go through with this.

Luna blushed as they headed downstairs, speaking up with only a little hesitance in her voice. “She…she has already expressed interest in…helping me to satisfy these urges. I don’t know if this is exactly what she had in mind, but…but I now my Fluttershy and I will support her no matter what she chooses.”

Petal nodded, heading inside and summoning her equipment as Luna closed the door behind them, continuing to speak as she got to work. “Well if she does take it you will need to help her after the change, for she will have to get used to her new anatomy, much like I had to.”

“What will I need to do?”

“one, you will need to get her used to her new diet, she is going to need to start eating animal protein to survive, as well as drink healthy amounts of blood as well, so you will need to get her used to that. Two will be the changes to her physically, she will develop fangs, her wings will change, and her eyes will develop that cat like look to them, but the biggest change that might scare her will be the changes to her fore hooves, I know it freaked the hell out of me.”

Luna nodded and then flinched when Petal yanked out a strand of her mane, growling as she watched it get added to the potion. “And that should do it,” she said, scooping up the glowing red liquid and pouring it into a bottle before handing it to Luna. “I hope this helps, and take care ok.”

Luna nodded; sharing a brief kiss with her before leaving the building, leaving Petal giggling at the spring in her step.

* * *

Luna eventually reached Fluttershy’s cottage, her pace having slowed due to how nervous she was. She knocked on the door, not too surprised when the door burst open and Fluttershy pulled her in, looking worried.

“Oh Luna I have been so worried about you, when you left in such a hurry I was worried something bad might have happened, are you ok?”

Luna nodded, “yes Dear Fluttershy I am fine, and as to why I was in such a hurry, that is actually why I am here, could we please sit down?”

Fluttershy nodded, leading her over to the couch and sitting down before speaking again. “What is it Luna; did something happen last night?”

“Yes…um, do you remember when I talked to you about my…my other urges?”

Fluttershy blushed and nodded, understanding now where this conversation was leading. “I…I suppose you found a solution then,” she said, looking hurt.

“Yes, with Fuedal and his mate Petal, who I know you know. But that is not important, what is is that Petal has provided us an option to help…help you help me with my urges, if you so choose.”

“Really?” asked Fluttershy, lighting up at the possibility of being able to help her mate fully.

“now before we…we go through with this, I want to make sure you are utterly willing to go through with this, for this option will change you into…well into a bat pony my love, with all the pros and cons that implies.”

“I’ll do it…”

“But you haven’t even spent time thinking it over?”

Fluttershy shook her head, “don’t need to, I already know I want this.”

“But how can you know?”

Fluttershy looked from side to side, as if worried somepony mite overhear them, then moved her mane to the side, letting the light sine onto the back of her neck where a bite mark was visible. “Fluttershy, is that from…?”

She nodded, “my…my first time was with a bat pony, I had met him when I was young. He…he had been part of the student exchange program that Celestia had founded reaching out to the bat pony tribes, trying to re-forge the lost connection and bring them back home. We…we hit it off pretty well, and eventually started dating…I remember Dash didn’t approve of it, but he was so gentle. Eventually we…we got intimate, and it was the most frightening experience of my life.”

Luna nodded in understanding, knowing how aggressive bat ponies tended to get during coupling.

“After the experience he broke up with me…he said he didn’t want to hurt me again, said that…that it would be better if we just went our separate ways. But…but he never let me explain, never let me tell him how much I had liked the pain…that under those screams of pain were screams of pleasure, a pleasure I have been aching to experience again.”

Luna looked down in shock at her lover, not having expected something like this from the usually reserved pegasus. But she had a sneaking suspicion there was more to it then what she had said, so she decided to take a little gamble and ask a direct question. “And was…was there something else besides that that you wanted to experience?”

To her surprise, Fluttershy nodded. “yes…I…I also wanted to experience what it was like to bite somepony the way I was bitten, to break past the flesh and to…to taste them in a whole no way…”

She shivered with arousal, letting Luna pull her close as her mind began to race with fantasies. “So you really want this?”

“More then anything I have ever wanted in my life, but only if your ok with it.”

“Ok…” said Luna, pulling out the bottle and showing it to Fluttershy before speaking again. “Now before you take this, I do have your assurance that you are ready for all that becoming a bat pony implies. The need to consume other animals, the predatory instincts, even the need for blood?”

Fluttershy nodded, “I…I have been getting ready for quite sometime…you…you remember those dear I brought for Fuedal?”

Luna nodded, “I hunted them, I had some special claws made to…to help defend myself from some of the more vicious predators. So…so I thought I would try it and…and I liked it…”

Luna’s eyes widened a bit, but she stayed silent, watching her mate as she shivered, both due to her own shock and how excited the memories made her.

“I couldn’t believe it, but I enjoyed the excitement of it all, the rush as I chased the dear down, the revelry as my claws dug into its flesh, and the thrill as I broke its neck…and it didn’t feel wrong…it felt right.”

She was shaking now, and Luna pulled her into a hug as she began to cry, sobbing into her coat as she spoke through sobs.

“They weren’t my first either, I…I have my own urges to Luna, but I could never be completely true to them…until now, so please…I…I need this.”

Luna nodded, letting her go and then giving her the potion. She drank it quickly, then convulsed as the changes started to take effect. She whimpered first changes began, but Luna didn’t panic, she could guess easily that if she hadn’t let Petal take that bit of her mane, Fluttershy would most likely be screaming right now.

The first change was to her teeth, sharpening as her canines grew into fangs. The next was her wings, the feathers actually melting away as leather stretched out between the bones, forming her new bat like wings. Her fore hooves were next, the cloven paws common to bat ponies forming as her old hooves cracked and reshaped themselves. Then came her eyes; developing into cat like slits while still retaining their color. But the last change shocked Luna the most, and that was what happened to Fluttershy’s mane, for streaks appeared in it matching Luna’s mane perfectly.

After the final spasm of pain ended Fluttershy looked herself over. Her eyes were attentive, catching every minute detail as she looked over herself. Her wings were strong, and she flexed them for good measure. She then looked down at her new paws, flexing them experimentally as her new claws dug into the wooden floor.

Fluttershy then turned to Luna, and Luna was taken aback by the look in her eyes; for it was the look of a confident predator. As for Fluttershy, she was excited, for she now felt whole and at one with herself, complete for the first time since her encounter with that bat pony long ago. Her predator was free now, and there was only one thing left to do before she was to be with Luna when night came.

“I need to hunt.”

Author's Note

Introducing Predashy in all her glory, prepare for an extremely gory chapter next update. As always I hope you enjoyed the chapter, and if you guys have any questions or comments please don't hesitate to drop them on by, you know I love hearing from you.