The Nightmare on the Shapeless Isle: The Sisters.
 
"Hey, Master. Is this trip going to take us much longer?" Mordred roamed up to the Master of Chaldea, very little respect in her voice for the girl who summoned her.
 
Ritsuka Fujimaru just sighed. They'd been stuck in a strange variant of the Okeanos Singularity for a few days now, floating aimlessly around the ocean on a barely seaworthy vessel. Communications with Chaldea itself had been cut, so they had absolutely no idea where the grail was either. More than a few of their Servants had managed to go missing too, All three of the Medusa as well as Stheno and Euryale. Not to mention the Altered form of Lancer Artoria, Kiyohime, Scáthach and Sima Yi had disappeared that night as well.
 
Nobody knows where the nine missing Servants went, and nobody really knew how to find out, either. Medea and Circe had attempted to use their scrying spells to see the missing Servants, but their attempts always failed. Apparently a powerful magical field was blocking their divine magic from working, and as such, they were little more than average girls without any abilities, of course, it wasn't just their magic that was being blocked, practically all of the Servants had been brought down to the level of a normal human being. "Wait a minute!" Cried out the relieved voice of Scheherazade. "I can see land! We... We're not going to die out here!" The busty woman sounded immensely relieved as she spotted an island in the distance they were actually heading towards.
 
Cheers erupted around the ship as they began to speed towards their new location with greater haste. They would finally be able to eat! They might even be able to escape from this horrible singularity! The atmosphere on the deck of the vessel was jovial as Drake controlled the ship and kept it steady as she moved it towards the island.
 
Before long, the many Servants and their master had finally docked and were on dry land once more. Even Drake was relieved to finally be off that boat. There's nothing worse than the feeling of slowly running out of rations and starving to death while adrift and lost at sea. A quick look about their surroundings revealed a few places that ought to be worth checking out. Three in total. Nearby was a large cave, their best bet at finding the grail, if it was here at all was probably in there. The other sites were areas that looked like ruined temples. One of which was built atop a large hill, and the other was in the depths of a forest.
 
Gudako and Mash ended up staying with the boat while the rest of their Servants went to explore the island and try to find out a way to either restore their abilities or get away from this dreadful singularity.
 
"Aunt Circe, are you sure you know where you're going?" Medea was annoyed at Circe for taking the role as lead of their group, but the other members didn't seem to really care all that much, Quetzalcoatl and Sitonai were chatting amicably with each other, from one goddess to the other, while Ishtar and Ereshkigal were too busy bickering with each other to care about actually leading the group.
 
"Obviously! We're heading to the top of this *huff* hill! We're going to see if the grail is there!" Medea frowned again. Her aunt Circe was far from the athletic sort, and she relied on her magic to solve basic tasks even more so than Medea herself normally did.
 
Soon enough, the six normally powerful servants, many of which were true goddesses reached the summit of the hill and entered into the partially ruined temple, finding three girls wearing pure white dresses waiting for them. Stheno, Euryale, and Medusa Lily were all sitting there, apparently having been waiting for the arrival of their guests.
 
"What are you three doing here?" Medea blurts out at the three girls, and Stheno simply smirks.
 
"We realized that of all the Servants in this singularity, only ourselves and Medusa kept our power as Servants, so we decided to have a little fun!" The danger on Stheno's smile is real.
 
"That's right! We decided that we should play hide and seek with some of the other Servants, but Gorgon hid them all in her belly, and now they don't want to play anymore!" Euryale clarifies for the guests, and they find themselves shocked at how casually Euryale had said that Gorgon had eaten her fellow Servants. While everyone knew that the fat snake was a man-eater, none of them thought that she would actually fall to her base desires!
 
"W-wait a second, did you say that she... ate those four?" Ishtar finally stops bickering with Ereshkigal for a moment in order to ask the two girls a very important question.
 
"Oh yes! Whole and alive!" Medusa Lily is very much the most enthusiastic of the girls as she recounts things to their guests. "They were struggling all the way down, but big me was just too strong for them! She gulped them down one by one after we took them from the ship and she let them run around on the island for a while as she hunted them down!" Medusa Lily has a lustful tone to her voice as she keeps talking. "Then she let me and my sisters stroke her big gurgling belly while it did the strangest thing to the girls inside her!"
 
"W-what did she do?" Ereshkigal asks this time, clearly quite terrified of the entire situation.
 
"She digested them for a few minutes, and her stomach didn't get any smaller! But then... then she... oh..." Medusa lily swoons as she is too worked up by the memories to explain.
 
"What our sister is trying to say is that when her huge self was done with her snacks, she squatted down and shit out four perfect stone statues of them! She was really quite taken with them, and took them to decorate her cave."
 
"T-the cave!" Quetzalcoatl suddenly realized that the bulk of their forces were walking directly into danger. Against a Gorgon who still had access to her powers, the group they sent would be reduced to nothing more than a buffet for the beast that lurked within! "We need to go and warn them!"
 
"Right, let's go, everyone!" Sitonai was quick to follow along with Quetzalcoatl's idea. They couldn't simply sit about and do nothing
 
"No. I don't think you will." Stheno was grabbing Quetzalcoatl and Sitonai by their arms, and the two Servants were completely unable to break away from the normally weak Servant. But in truth, it wasn't that Stheno was somehow stronger than she was normally, it's just that while the two goddesses she was grabbing had had their strength reduced to that of a human, Stheno was still a servant, and the strength of even a weak servant is enough to easily overwhelm humans.
 
"L-let go you little runt!" Quetzalcoatl has a nasty snarling frown on her face, and she immediately goes to retaliate against Stheno's sudden attempt at a grab with a punch aimed at the girl's face... only for her fist to become stuck in Stheno's mouth as she opens her mouth to catch it. "Hey! What the hell are you doing?" Quetzalcoatl tries to pull her hand out of Stheno's mouth, though all she manages to do is sink it deeper into Stheno's damp mouth!
 
"Ah! Our first volunteer!" Euryale giggles as Quetzalcoatl's arm is rapidly slurped down into Stheno's throat, and the other Servants can only watch in horror as the normally powerful Aztec deity disappears into the small girl, all the while struggling for her freedom, though her screams for help soon end when her head pops into Stheno's mouth too, her ridiculous hat flying off and thudding as it hit the ground as a result.
 
The other five servants can only watch in silence as they observe the disappearance of a god. Though not running was the greatest mistake they could've made, as Euryale and Medusa chose that moment to strike. Euryale landing on top of Ereshkigal and quickly stuffing the head of the bewildered goddess into her mouth while Medusa ends up tackling Circe to the floor before starting to consume her feet first. Ereshkigal finds herself unable to do more than let out muffled yells as Ishtar simply looks at her fellow goddess being consumed by the smaller girl with ease with an expression of pure fear.
 
"H-hey! What do you think you're doing! M-Medea? Sitonai? Ishtar?! Where are you all going!? Save your team leader! Circe cries out as the three other Servants finally get the message that they need to flee from these three hungry girls before they find themselves next on the menu, but the three weren't playing around, as Medea leaves the room, she can see the three girls all finish their meals at about the same time, Quetzalcoatl and Ereshkigal's legs were slurped down like spaghetti by the two goddess girls, but Medusa Lily, ever the misfit compared to her sisters, was eating her food the wrong way round. Circe's screaming was muffled by Medusa Lily clasping her tiny hands around her face, and the bird woman had an indignant look on her face as she was sent to her final resting place within the tiny gorgon Medusa Lily. When she got summoned back to Chaldea she was going to give these three the sternest talking to they've ever had in their lives!
 
Medea was running as quickly as she could back down the hill, but she soon found herself running out of energy very quickly. She just wasn't used to this level of physical exercise, and looking at Ishtar and Sitonai, she could tell that they weren't used to having to run on their own power very often either. "D-do you think we managed to get away?" Ishtar asked, her deep panic still very evident in her tone."
 
"Of course we did! Girls with bellies that big? I'd be surprised if they could even walk, but to chase after us? That's a silly thought, Ishtar." Sitonai has a lot more confidence in their escape than Ishtar, and for good reason. There was simply no way that they'd have been able to follow while carrying all that extra weight on their frames, they'd have until the three... digested their meals to make their escape, and by Medea's calculations, the average stomach would require days to digest an average sized human! They were safe.
 
"What's this? Our runaway second courses talking among themselves instead of running?" Euryale laughed. Impossibly, they had not only been followed by the three small girls, but they had found themselves surrounded! Each one of the sisters were approaching, the occasional imprint of faces can be seen through their already stuffed bellies.
 
"N-no! Please... don't eat us!" Ishtar is quick to resort to begging to get her own way, and Stheno puts a hand to her chin, losing herself in thought before she finally decides to speak up.
 
"Alright! Only one of you will be chosen to be eaten. How does that sound?" Stheno happily announces. "That is... I want the three of you to decide which one of you is going to be eaten, and then I want you to feed her to Medusa by yourselves!" Stheno cackles evilly.
 
"Y-you can't be serious!" Sitonai pipes up. "We aren't just... just food for you three to toy with! What happened to you three? Why are you acting like this!? Master will be-" Medea and Ishtar pick up the small girl and begin dragging her other to Medusa, who of all of her siblings has the smallest belly. Circe was only a small thing, after all, and a growing girl like Medusa Lily needs all the food she can get. "You two! What are you doing?! You can't be thinking of going alo-"
 
"Omph" Medusa Lily makes a cute noise as Sitonai's head is plunged into her gaping maw, and the two desperate women restrain the tiny girl as they push her down towards Medusa's belly. They make remarkable progress very quickly, Medusa isn't wasting any time with this meal! Ishtar and Medea are relieved though, as the quicker they manage to feed Medusa the girl, the quicker that they can get back to the Master and the others and attempt to warn them of the terrible threat on the island!
 
They prepare to let go of Sitonai's ankles when the girl has almost entirely vanished into the throat of Medusa, her screaming face clearly visible bulging out of Medusa's belly already, close to Circe's own face bulge, she's closed her eyes and has a tranquil expression on her face despite her tight prison having become that much tighter. Though the moment they go to take their hands away, they find that they are unable to, a quick look at their hands reveals the reason why. They were unable to let go of Sitonai's ankles, because their hands have been transformed entirely into stone. At some point during her consumption of the tiny goddess, Medusa Lily had found the time to activate her mystic eyes, and now Medea and Ishtar were doomed to share the same fate as the girl that she just used as a sacrifice for their own safety.
 
"Come on then, you two!" Euryale smirks at the two girls as they try to pull away from the grips their own petrified hands have on Medusa's current prey.
 
"Yeah, we're going to let you go, but if you just want to feed yourself to our small cow of a sister, then we suppose that's fine too!" Stheno laughs as the two trapped Servants try to escape from their current predicament. Yet they weren't anywhere close to powerful enough to escape from Medusa, who sucked the last of Sitonai into her throat at the same time she took in the hands of the two girls.
 
"J-just hold on! Wait... We can... We can get you more food!" Ishtar begins to plead and bargain with her predator. "Isn't that right, Medea?"
 
"R-right! All of Chaldea, churning away in those little bellies of yours! Doesn't that sound nice?" Medea goes with Ishtar's decision to try to talk her way out of it at any cost. She didn't want to be food for Medusa, and certainly not the little brat Medusa!
 
"Well duh." Stheno and Euryale both answer at the same time before Stheno continues talking alone. "We're going to have all of Chaldea churning away in our bellies anyway! After we absorb the power from all the Servants that are on our island, then we're going to go to Chaldea and eat everyone there too!"
 
"A-absorb?" Medea picks out a word that brings her
 
"That's right! When our bellies are finished with you six, you'll be made a part of us three forever! We'll absorb all your memories and powers, as well as your place on the throne! You'll only exist as part of us from now on!" Euryale laughs as Ishtar and Medea's struggles intensify greatly, the women didn't want to be eaten before, but the knowledge that if they can't escape then they will be permanent additions to Medusa Lily has caused them to do all that they could do to escape from their final death at the mouth of a hungry little gorgon. Soon, Medusa had swallowed up both of their arms at once, and then their heads followed, after came their chests, none of her meals today ended up being that stacked, and it kind of annoyed Medusa Lily. How was she supposed to get boobs like her bigger versions if all her meals were practically flat?! She wastes no more time with her prey and swallows down their legs and feet with one more swallow, sending the two girls to be reunited with the others in her belly.
 
"Wow, you really are a gluttonous cow, aren't you, Medusa? It's no wonder that you ended up becoming so fat in the future! You just couldn't stop yourself from eating those last two bimbos, could you?" Stheno chuckles as she looks at the huge squirming belly of her immobile sister, four Servants trying everything they can do to get out in vain.
 
Medusa belches as she blushes from embarrassment, she had gone a little overboard, originally, the plan was to let at least one of them go so they could lure more snacks to the temple which they could swallow up as well! Now they were just left with one hell of a stuffed little sister, her stomach was colossal compared to her!
 
"Now, I think it's about time that we got rid of our food, don't you? I've been dying to absorb them!" Euryale puts her hands on the side of her stomach, as do Stheno and Medusa (Who struggles to even reach her belly in any meaningful sense with how huge it is). As the three girls do so, two different things happen. For Stheno and Euryale, their bellies glow pure white as the prey inside are immediately and without challenge converted into divine sustenance for them. Ereshkigal and Quetzalcoatl disappear forever in a span of about three seconds.
 
But it is quite difficult inside of Medusa's belly. "What's going on!? Why... Why am I turning to stone?!" Circe, the one who had been in the belly the longest, had finally lost her cool. The idea of being eaten and digested was bad enough, but the fact that it was not only permanent, but that she was going to serve as her own tombstone through being digested into nothing but a stone husk of her own body? She couldn't accept that!
 
The four girls all suffering from the same predicament struggled all they could as they were partially petrified before one by one they were sucked down and out of sight into Medusa Lily's intestines, where the sounds of slurping only served to fuel the fears of the girls still trapped in the stomach. Sitonai disappeared into the intestines first, then Circe followed her, then Ishtar was the third, grabbing hold of Medea's leg and dragging her down with her as she disappeared. The petrification process only worsened in the intestines, and though they could remain fully conscious throughout the process, and they were even aware of their surroundings, they knew that they were truly doomed now. Eventually, all four of the statues came to a stop, having reached the end of the intestinal track, they each caused something of a pile-up. Medusa Lily was really going to have a difficult time passing the girls. They had all been mostly absorbed now, and the last step to truly eradicate them for Medusa Lily was to eject their remnants from her body. Her sisters don't suffer such limitations, and it makes Medusa feel inferior.
 
"Hnnngh!" Medusa Lily had excused herself from her sisters in order to pass the four tasty girls she had swallowed up. All their full powers as Servants belonged to her now, and she had found herself the greatest wielder of magic in the entire world in the hour it took her to absorb and digest the powers from those four snacks. Of course, she wasn't using that magic just yet. Finally, a crunching noise finally tells her of her success, and she feels her ass start to deposit what was left of her four meals. She turns around to take a look at them, expecting to see a beautiful statue of one of the girls with an expression of digestive terror. Instead she is treated only to a large quantity of pearly white sand falling from her ass, and as she continues to exert herself, it changes color to pink, then brown, and finally before she finishes relieving herself, blue. She hadn't managed to turn the four girls into statues at all! Instead, all that was left of them was some colorful sand, crushed down into dust by the force of being shit out of such a tight hole! What a damn let-down... Looks like she'll just have to see if Gorgon or the other Medusa were more successful with their own hunts...
 
Medusa Lily swiftly returns to her sisters, leaving the pile of sand that she had transformed her four meals into to blow away into the wind, the very last erasure of their physical existence, after their minds and souls had already been claimed by Medusa's greedy guts.