Roku-jo no Heya Chapter 1, a frozen fanfic

六畳の部屋
｢Roku-jō no Heya ｣

An Elsanna Fic of Tentacular Proportions
by Jessica X

WARNING: THIS IS HIGHLY NSFW. It is consensual, but treads pretty close to the line a few times. THERE ARE TENTACLES. YOU HAVE BEEN WARNED.

Anonymous said to elsannafervor:

Tentacle AU: Instead of ice powers, Elsa has tentacle-demon abilities and can sprout flexible limbs. Her human half eats normal food but her monster half needs sexual energy for sustenance. This isn't a problem until teenaged Anna starts exploring herself in the other bed and Elsa desperately tries to hold back her tentacle half from reaching over and taking what it wants. It's a long while before Elsa finds out what Anna was fantasizing about all this time...

We were all... very tempted to ignore this ask. Or be ill, or demand to know who sent it - in fact, the infamously kinky Cartesianplaneswalker was actually turned OFF by this idea, so kudos to you, Anon.

Then Forkanna decided she hadn't been enough of a horrible person lately. However, she's also weirdo who can't even take an obvious "PWP" prompt like this and just leave it at that... and then it got longer, and longer, and longer...

But now it's done.

~ Chapter One ~

Anna Katsushika never knew why her half-sister stopped sharing a room with her until their big overseas vacation.

For the first ten years of Anna's life, she and Elsa played together happily, sharing lives as full-blooded sisters would. What a shock that was to everyone! They were from a mixed family; her father remarried, and the Aryan-looking Elsa's "new mom" gave birth to the conspicuously-auburn Anna, with the oddly striking genetic combination of red hair, almond-shaped green eyes and freckles. Even though most expected Elsa to resent both of them... she didn't. Anna had a few early memories of Elsa demanding to know why she didn't get this or that new toy, or had to be quiet while Anna was napping, but their parents sat her down and explained that just because she had to share with her baby sister didn't mean they loved her any less. It took a few repeated assurances, but the message seemed to take root eventually.

There was also the fact that, every time Elsa had to go to the doctor for a checkup - which was a lot more often than Anna did, even her young mind could figure out that much - Anna insisted on going with her. Every single time. She wasn't allowed to go back into the examination room, but she would colour in her colouring books until Elsa came back, then immediately rush to hug her and ask if everything was alright. Sometimes Elsa looked fine, sometimes she looked sad or exhausted. But her smile was always genuine when Anna expressed this sympathy.

Then, when Elsa was about thirteen and Anna eleven, something changed. They had both been slowly making the transition to talking about boys more than toys, about makeup more than cartoons. Anna still stubbornly stuck to the cartoons, of course, and Elsa was happy to compromise; she herself was beginning to read more and more, delve into classic literary works that were way above their reading level. So they had these separate interests; it wasn't anything truly awful, but so what? They didn't have to share literally everything.

Not long after that was when Elsa started waking up with panic attacks. At least, that's what they told Anna; she would be startled from her sleep to see Elsa shivering in her bed, knowing that the thing that awakened her had been a scream. When she tried to crawl into Elsa's bed and comfort her, she shoved her away. Their parents assured her that they weren't anything to fret over, but after this went on for several months, they made a decision that rocked both of their worlds: Elsa was to move to the small room in the basement.

Without her sister, Anna's room felt barren. Lonely. The upside was that she got to switch out Elsa's bed for an entertainment center with a big screen TV, where she could watch all the cartoons and play all the games she wanted. Not that it came close to replacing what she lost, but it softened the blow.

Even worse, Elsa started hanging out with her less. At first, it was because they were in different schools; Elsa was starting high school and Anna still had yet to move up. But they had been through that before when Elsa started middle school, so it was no big deal, right? Wrong. The divide caused by their splitting rooms grew wider when Elsa made new friends at school, and began to spend more time with them. Even at home, she would go off to her room to read instead of waiting to see what Anna wanted to do - and, of course, Anna was not to disturb her unless invited.

Nothing improved when they were both in high school, either. Year after year, Anna walked the halls alone, her friend Tiana asking why she always looked so mopey. When she said her sister wouldn't talk to her, Tiana seemed to think that was a dumb reason to be so depressed - that if her sister didn't think she was worth hanging out with, that made HER the dumb one for missing out on "such a cool person". Not that Anna agreed, but it did make her smile.

Then came Christmas of Elsa's senior year. Winter vacation. She'd already been accepted to one of the most prestigious universities in the US... miles and miles away from their home. Elsa would be gone. Anna's grades were good, but not nearly so flawless that she could follow her - and even if she did, got into some lesser college in the same town, what would be the point? Now she was the tag-along half-sister that wasn't wanted. A blight on Elsa's social life.

So they were all to take one last family vacation before their lives changed completely. Back to the hometown of their mother (or stepmother, in Elsa's case) in the western region of Japan, where her family had been clamoring to see them since the last time, almost a decade ago. Saving up money for this trip had cost them a lot of luxuries - satellite TV being cancelled came to mind, which was more of an issue for Anna than for Elsa - but they were finally going. One big family holiday trip, all four of them.

The only problem was...

~ o ~

"You CAN'T!" Elsa was snapping at their parents. "This isn't fair, nobody told me!"

"It's just for a week," Keiko Katsushika was trying to reassure her stepdaughter. "You can handle the arrangements for that long - and then we'll be moving on to Tokyo, where Anna can sleep in the second bed in our hotel room."

Glancing over at Anna with her bright, clear blue eyes, she turned and hissed low enough that she probably thought Anna couldn't hear, "But you know I'm not comfortable with this! What if it's a problem?!"

"Now, now," their father, Edgar Arendelle, tried to calm her with a gentle cupping of her cheek, his significant height and barrel chest adding to the level of comfort he was able to provide. "None of that - we already discussed that it's as much about willpower as it is about the medication."

"The medication doesn't work - it doesn't do anything besides make me feel more tired, but that doesn't affect... doesn't affect my condition!"

"Enough!"

This last outburst came from Hokusai-ojisan - their grandfather. His English was heavily accented, but flawless, and his voice was like a steel razor when he was irritated with his family members. "The matter has been settled. Sisters should share a room; they are family. Whatever your worries are, they will not matter. If you have a problem between you, it is far better to work it out by confronting it than to... to segregate yourselves away from each other! So no more squabbling!"

And that, as they say, was that.

~ o ~

What was to be "their" room in the old house was a roku jo no heya, or a room that was six tatami mats large. Neither of them knew what that meant when their mother told them offhandedly, until they got inside and saw it was a reasonably-sized bedroom; not tiny, but not quite as large as the room they had once shared back home. Six woven mats did indeed make up the flooring, arranged so that they fit together rather seamlessly. Beautiful, traditional art and calligraphy adorned the walls; their grandfather was quite a fan of the old style, and the small modern touches their mother added when she lived there were long gone. The sliding door of the closet concealed the futons they would sleep on, and there was a tall black-painted wooden dresser in one corner for them to unpack their clothes into, should they so choose. Elsa began doing that immediately, though she was still complaining about the arrangements as she did so. Opting to let her have it - and hoping it would make things go smoother - Anna left hers in her suitcase.

That first night was fine, despite her uncertainty that sleeping on some sheets on the floor would be anywhere close to the comfort level of her "normal" bed back home. She saw Elsa sneaking a pill to put her into a dreamless slumber, but she made no comment of it. They made small talk about nothing of any importance, had a brief laugh about Ojisan's funny mustache, and then drifted off to sleep. Their excitement level was high, even if it mingled with apprehension, but all that travel simply wore them out.

Day two was spent in and around the quaint town of their mother's birth. It was a curious mix of old and new, shinto shrines next to 24-hour convenience stores, people who walked everywhere and cabbies honking their horns impatiently. Oba-sans bowing low in respectful greeting and punky preteens who only rolled their eyes. Anna was soaking it up with a happy heart, chattering and snapping an endless supply of pictures with her phone to update social media. Meanwhile, her more-reserved sister was content to remain distantly fascinated by everything, commenting about this or that aspect of their culture that she might have already read about. That would have annoyed Anna if she didn't secretly think it was really cool that Elsa knew all that stuff.

The second night was a bit more of an adventure. As she remembered happening a few times several years ago, Elsa woke her up by thrashing around and shouting. This time, however, they were so close together in their futons that she was able to notice a few more bumps in the top sheet than made sense. Almost as if Elsa had a couple of extra arms and legs. Bizarre, but she easily blamed it on her half-awake state.

Most worrying to both of them was... their parents did not come charging in to ask if they were alright. Even though the house was very traditional, it appeared the walls were built thicker, according to Western standards. Thicker than the walls of their own house in America, even. So it fell to her to comfort her sister.

But Elsa did not want her comfort. She told her to leave her alone. When Anna insisted, distraught and wide-eyed, she finally snapped that if she wanted to help, she could go get her a drink of water. Anna obeyed, too panicked and too nervous about losing their progress in reconnecting to refuse.

By the time she returned, however, Elsa was herself again. Still a sheen of sweat remained on her forehead, but she was speaking calmly, rationally. Apologising for being rude. Soon after drinking the water, she drifted off to sleep. They both did... though Anna had a harder time of it after that. Her beautiful, intelligent, perfect sister had this horrible affliction that she could do nothing about. She felt powerless.

Another two days passed like this, with pleasant days of sisterly bonding, family bonding as a whole, and occasional freakouts in their bedroom. One night, she could swear Elsa was looking over at her when she woke up, but when she rubbed her eyes, it was clear she was turned the other way. Again, that unnamed medical condition kept popping up in her mind - the one nobody would talk about. Surely if it was something as simple as night terrors, they would have simply admitted that much? But still they were silent. It vexed her, but there was nothing she could do but accept the unfortunate situation and try to be the best sister to her that she could.

For the time being.

~ o ~

Their second-to-last night spent at Ojisan's house was the night a freakout happened before Anna was able to fall asleep. Ever since she saw the cute boy in the restaurant - Tadashi, his name had been, and she wanted to roll that name over her tongue and around in her head constantly - she had been all aflutter. Both her mother and her sister ribbed her about that, but she brushed them off - and her father's complete lack of amusement helped silence them sooner.

But now, she couldn't sleep. Tadashi kept coming back into her mind, his broad, firm shoulders, his easy smile... it didn't make any sense for her to crush on him, not when he would be nothing but a memory in a few short days. Her teenage mind refused to listen to reason.

And her body wouldn't, either. Biting her lip, she tried her damndest to ignore the urges - just like she always did. Now and then, of course, they got the better of her. This was another situation altogether; after spending so many years apart, she didn't feel as indifferent to Elsa being in the room as she did before - she couldn't do anything about it now! Not with her sister inches away! What if she heard, or woke up and saw? That would ruin all her hard work in repairing their friendship! Their sisterhood!

So there she squirmed, laying on her back and fighting against her libido, when she heard rustling beside her. Afraid Elsa was about to wake up in a panic again, she tried to remain still so as not to startle her; that was the last thing she wanted. To make her suffering any worse.

Which was when she felt something slide over her shoulder. Elsa rolled over and her arm had come free of her futon, of course - but it didn't quite feel like an arm. Something warm... lighter, and softer. Anna didn't feel it directly, but even through the bedclothes and her Sven Vs. The Forces Of Evil pyjamas, there were no telltale bumps from knuckles or anything.

And there was another - this one a lot lower. Somewhere she wished it wasn't.

"W-what?" she breathed softly, glancing over at Elsa - to see she was rolled in her direction, eyes closed. Yes, she was facing her, but still seemed to be completely asleep. That was fine; maybe these were phantom feelings. After all, she couldn't see anything touching her...

Or could she? They were there, ghostly, indistinct... and then gone. The feeling still weighed upon her body, but she could no longer see anything. But they had looked like grey shadows of...

What could she call them? Ropes, but ones that tapered, growing larger the further away from her body they went. Less than an inch across at the tips where they lay on her shoulder and hip. It frustrated her that she only caught sight of them for a second before they disappeared from her vision. That wasn't normal.

None of this was. One of her hands moved up her body - interrupting the pressure from the one that had been aiming somewhere that was too disquieting - and pinched her arm. Hard. "Ow!" Anna breathed. Nope, she was definitely awake. The phantom feelings were still there, but nothing visible. What was going on?!

Notions of a haunted house came into her mind, bubbling up from the darker parts of her imagination. Things that weren't real. Then again, the sensation was real enough.

When a third one slithered up to slide across her face, poking at her lips, she couldn't take it anymore; she sat up and tried to swat them off. And it worked; the sensations all fell away completely. And they were still invisible...

If they had ever been real at all. Maybe she really had been simply having the most intense dream of her life, even though the pinch would seem to contradict that hypothesis. What would her parents say if they went to wake them up? Tell her she was dreaming. Go back to sleep. Maybe she should...

But the sensation came again, slithering over the top of her knee. This time, she reached out and grabbed it - and it felt solid. No matter how hard she squeezed, even though it was fleshy and gave at her touch, it did not vanish, did not prove itself to be a figment of her imagination. Invisible though it was, it was real. This thing was real!

And there was another side effect. When she first grasped it, Elsa squirmed. Now that she was squeezing it, there was an actual shiver from her sister - and a moan.

That was almost enough to make Anna drop the thing, whatever it was. Either this was a little too convenient, and Elsa happened to have an intense dream at the exact second she experimented with the invisible creature, whatever it was, or... or she had no idea.

Another one was now touching her leg, picking up where the first one left off since it was incapacitated. She fought down fear and panic, wanting to run away but telling herself that if she did, she might never find out what was going on. Not that she would have cared, except it might be somehow connected to Elsa's night terrors. That was worth her discomfort.

It kept going. She suppressed a shiver of disgust, instead trying to keep her mind open to feeling any more of them creeping up on her. How many were there? That could be an important detail.

All of that was forgotten when she felt the ghostly tip pressing up against somewhere she had been pointedly ignoring ever since Tadashi entered her mind again.

"AH!" she gasped out, reaching down to snatch it away. Now both of her hands were full of the odd, squirming, invisible beings; they were too big around for her to easily hold more than one in one hand. Maybe she could handle all three by stretching out her fingers and trapping one partly against the other two, but that would depend on if-

Yes, of course. Seconds later, the third one was making its way up her thigh. She waited until it poked her in the same region before snatching it up, having to move in a very awkward fashion to avoid dropping the first two as she did so.

Now that she had three of the squirming objects in her hands, she noticed Elsa writhing in her sleep, shuddering as she bit her bottom lip and made smaller groans. These were not completely foreign to Anna; she knew how that went. They were the kind of groans she herself made when she couldn't resist temptation anymore. Indulging in some carnal indiscretion. That seemed weird, since Elsa was just laying there asleep, but she didn't know what to make of it.

A fourth one was trailing up her shin; maybe trying to be more sneaky, start from further away. How was she supposed to stop four of them? Kicking off the blanket, she stamped down on it with the opposite foot, to make sure she didn't have to move her leg and lose her sense of where it was. She felt it flailing around against her, but at least it wasn't progressing further.

Then the ones in her hands began to grow more unruly. She was able to keep a handle on them, keep them from escaping, but one was sliding further through her grip, until the tip was able to brush against her neck. A shiver ran through her entire body at the sensation; it wasn't altogether horrible, but the idea of something invisible touching her was so icky! She couldn't stand it!

The holding pattern was working, though, it was true; none of these squirming things could reach her sensitive centre while she was hanging onto them - or stepping on them, in one case. But that also meant there was nothing she could do about the one making its way up to her face. Not without letting another one go, or enlisting Elsa's help by waking her up.

At first, it was easy enough to ignore it poking at her lips, brushing against them - making them tingle. She didn't want to enjoy it; and she didn't, not really. Even if the sensation was pleasant... exciting. The glimpse she got of them before they turned invisible to her eyes hadn't shown them to look especially dirty, or slimy...

Anna's mind cut off that line of thinking. No matter what was going on, she was absolutely not going to entertain the possibility of giving in to whatever they seemed to demand from her. She would hold out, see if Elsa woke up, or find out for sure what they were. Then she would think up a way to destroy them if they posed any real danger.

But it was so insistent, so smooth. Silky. It was too hard to focus on clamping her mouth shut, gripping tightly with all her fingers and five of her toes, not making any sound; something had to give or she would either scream or lose her mind.

Minutes had passed with no change, with the thing pressing more urgently into her lips, sliding from one side to the other... attempting to force one lip up and then the other down. Never attacking, never hurting her, but definitely being a little pushy. If indeed it had a mind that could be pushy in the first place.

Then the one under her foot pulled away suddenly, and the sensation tickled, surprised her. She gasped, frantically trying to stomp down on it again-

And in the one on her face went, sliding between her lips effortlessly. The shock was so complete that it was only a few seconds later that she registered she had the fourth one trapped underfoot again.

What was this thing in her mouth?! So warm and soft, and it didn't taste like much... but the flavour wasn't unpleasant. Just insubstantial, like the rest of it. She was worried it would try to go all the way down her throat at once, but it seemed quite interested in her tongue, wrapping around it. Her heart started beating faster as it caressed the muscle, sliding over it and teasing its underside as much as the top.

And she sighed around its thick presence in her mouth before she finally seemed to snap out of it; the creature was in her mouth. She had let an unknown invisible presence enter her face and play with her tongue, acting as if it was something she did all the time! Angry at herself more than at the object, she bit down, hoping that would scare it off.

But all that happened was a hiss of breath from Elsa, as if she had felt the bite herself. That caused Anna to go slack completely - and that was when she felt one of the things caressing her chest.

"Mmphh!" she managed to whimper around the one in her mouth's presence. It had not drawn away when she bit it; only held completely still for a few seconds. Again, she bit down, risking another reaction from Elsa - which she got - and it writhed, but did not withdraw. Making the necessary motions, she spat it out, and that time she succeeded. However, within about ten seconds, she felt it up against her lips again. Ready to wait however long was necessary to return.

But the new problem was the one that had slid past her hands just enough to start teasing one of her nipples through her shirt. Already, she could tell it was fully erect; didn't take much, especially after her heated thoughts from earlier about the restaurant boy. The ones that sent a pleasant tingle down toward her loins...

The instant she let her mind wander in that direction, all four of the creatures made a leap for their intended goals. Sliding under her foot, jamming up against her lips - wrapping around her entire breast and squeezing. Thankfully, she still had a hold on that other one, who who knew where it would have wound up.

But the one under her foot had a new plan. It was working its way up her pantleg. A little careful flexing succeeded in routing it from there and standing on it again, but it fought free. Now she was forced to trap it between both feet, and the squirming was so uncomfortable there that she nearly lost it and gasped out again. The one on her lips would have loved that.

Finally, she was forced to let two of them go; her grip on them was so awful anyway. As the one plying at her lips continued its patient persistence, the other one tightened its hold on her breast and began flicking over her nipple with the tip of it. Even as she moaned through her nostrils, she grasped it and began pulling it off.

Only in hindsight did she realise her mistake. Everything was now occupied; every limb of hers, and all four of the invisible creatures. Well... not all of them. The one at her mouth had been so singularly focused there that she didn't expect it to draw away. Didn't have a plan when it went for the waistband of her patterned pyjama bottoms.

"NO!" she gasped, letting go of the one around her breast to grab for it - but it was already at its goal. "N-ohhHHhhhhh!"

At that moment, Elsa's eyes snapped wide open; even as distracted as Anna was by the soft, insanely inviting sensation up against her waiting sex through the thin fabric of her panties, she still caught it out of the corner of her eye. Glinting and blue in the pale light from the closed window.

Since Anna couldn't move, and had no words for what she was doing - or even how to describe what was doing this to her - all she could do was gape as Elsa went through the stages of being confused by being awake, then confused at what she was seeing once awakened. Then surprised. Then utterly, deeply shocked.

"Anna... no. NO."

"Elsa!" she breathed out tearfully as all of the creatures wriggled - especially THAT one. "AHHHH! Oh God! I m-mean... this isn't- I didn't mean for this to- I can explain! Or I can try, anyway!"

But Elsa looked like she was going to flee in terror from the room, mouth slack, entire body shivering. Then she began scooting backward, strewing all her sheets everywhere as she moved -

And the things jerked away from her. Gone. Except for the one she still had in her hand; that one was held fast, and she redoubled her grip on it.

"Oh no you don't, you little stinker!" she reprimanded. Turning back to her sister, she whispered, "This is a- I don't know, but you have to feel it for yourself! I need you to, please!"

Nothing doing. Elsa wasn't coming any closer, but still inching back toward the wall. However, eventually she came to a sudden halt with a wince - and Anna felt herself being tugged forward.

"Whoa, what?" Again, Elsa tried to back up, and again Anna felt the draw from the creature, the only one still connected to her. "That's- it's trying to fly away!"

"No, it isn't," Elsa sobbed, even though she wasn't truly crying yet. Just on the verge of doing so.

"Feel this!" Anna demanded as she crawled toward Elsa - who was shielding her face with both arms now, drawing into herself like a ball. "No, seriously - you won't be able to see it, but you have to feel it before it gets-"

"I've already felt it!"

That gave Anna a weird, unsettling burble in the pit of her stomach. Elsa had already experienced this? Maybe these creatures were normally attacking her instead of Anna - and that was the reason for the night terrors. Years of dealing with such a plight...

"Elsa, hey," she breathed, still gripping the creature in her fist with one hand while the other caressed her sister's neck. "I... I didn't know. I mean, how long has this been going on?"

Silence. The thing in Anna's hand tried to jerk away a few times, but she held it fast. Then she moved closer, even though Elsa flinched away when she did.

"Sis... what are they? Please, I'm sorry this has been... hurting you, or following you around, or whatever. But I can't help if I don't know wh-"

"You can't help anyway! Because nobody can! We have tried, and tried, and..."

Elsa's anguish was so complete that she curled up in a ball and fell to one side, quivering and sobbing in earnest now. Anna tried to pet her, but she lashed out again - however, this time Anna finally abandoned the strange creature to flee as she flung herself down on top of her sister's body, wrapping all arms and legs around her.

"NO! Get off, let me go!"

"I can't do that!" Anna half-growled, half-sobbed. "You're gonna let me hug you, or... or else!"

Through clenched teeth, Elsa finally turned to look at her. Bloodshot eyes, tracks of moisture running down her cheeks, lips stretching back from her grimace, nostrils flared. "Or else what?"

"No! Or else nothing, I... I can't let you go, not again! I refuse!"

"Anna..." Slowly, even though she still looked furious, her voice grew more and more fearful. "Anna, you have to stop. You have to get away from me immediately."

"Or else what?" she half-mocked, even though she was entirely serious. Trying to ignore her body's urges now that the taunting of the creatures had ceased was easier, but it still took some effort to maintain.

"You don't want to know. Now..." Her eyelashes fluttered, and then the lids snapped wide. "No- you have to go right now! I mean it, I've never been more serious about anything! Listen to me!"

Grasping both of Elsa's wrists, she flipped her onto her back and towered over her, bringing their faces to within an inch of each other. "No. I won't go. I... I can't lose you, not when we're finally acting like we're family again!"

A few seconds passed as the elder of the two women's eyes widened with the realisation of something left long untended. "Oh, Anna," she sighed sadly, blindsided. "You... I didn't- I know. God, do I know, I never meant-"

And as quickly as that came, the look of fear and anger was back. Elsa clenched her fists tighter and tried again: "No, we can talk about this tomorrow - you have to go right this second. Go to the bathroom, and then... then I'll be asleep, and it will be tomorrow, and-"

"I can't!" Anna squeaked, shifting her hips forward to sit down on Elsa more comfortably. Ignoring the tingle that caused - it was the pressure itself, not where it was coming from. "I can't leave you alone with whatever's happening!"

But Elsa didn't reply. She was too busy gaping up at Anna in dismay... as the creatures returned, en masse. Taking full advantage of her hands and legs pinning Elsa to the ground, they slid up her shirt and down her pants, wasting absolutely no time.

"AH!" she gasped out, fingernails digging into Elsa's shoulders. "What... what are they?!"

"They like you," Elsa admitted in a broken voice, thrashing with her arms slightly - weakly. Powerlessly. "Always have. For... for years now. When I'm awake, I have control - normally. When there's nothing testing my control, or nothing to control in the first place. But when I'm asleep..."

"Control? Over..." Anna couldn't finish the thought, not with two of them writhing against the back and front of her underwear. Not entering, just content to be nearby. Close to very sensitive areas of her body. "Nhhh... wha... I can't- UGH! How do I get rid of them?"

"You can't. You never will. I never will."

"Why do you keep talking like they're yours or something?!"

By now, Elsa was weeping freely, even as Anna's chest was stroked all over by two of them, trailing up to her armpit, down to her navel. Exploring every inch of soft outer skin.

"They are. They are a part of me - and most people can't even see them at all. So... I just... have to live with this curse forever." Breath hitching, she again strained for Anna to release her so she could flee somehow, and got nowhere. "Never am I going to be someone's bride, Anna; I can't risk it. Can't do this to them! They have every right to... t-to say 'no' to me and have my body listen! So do you! So... just get up, and get away from me, and they will stop. They can only follow you so far."

"They what?" But it was one of them trying to reach the hem of her underwear and push beneath it that finally made her shoot to her feet, backing to the other side of the room. Sure enough, every last sensation dropped away - though she saw, literally saw her shirt flap open when they dispersed. Invisible beings that affected the physical realm.

Seconds passed. Elsa lay broken on the floor, relieved that the trial had ended but clearly full of an old self-hatred, as well as upset by what had transpired moments ago.

"Elsa..." The elder girl flinched as if burned, so she tried again. "I love you, okay? I'm... this is freaky, I can't lie, but... you're still my sister."

Head snapping up, she just gaped at Anna for a long second, glancing up and down her rumpled pyjamas, down at her own clenched fists where they rested on the tatami. Then she looked up again and whispered, "You can't be real."

"Huh?"

"Nobody... no average person could go through what you just did and... and not hate the person making it happen, no matter who they are. You have to be some kind of dream."

"Not a dream," Anna assured her firmly, despite how freaked out she felt. Her hindquarters sank to the floor. "Just... tell me what's going on. Maybe I'm not ready for it, but I'm not a little girl anymore. And I don't think we can pretend this didn't happen."

"There isn't much to tell. No one knows what caused me to change, or how to fix the problem." Drawing her knees up under her chin, Elsa began to rock slightly as she explained. "All those doctor visits... most of them didn't believe us. Dad and Keiko always did; always, even when the doctors were standing there, telling them I should be put in a mental institution. Just... okay, sometimes they got frustrated with me for not knowing how to control them. And when I told them I was worried about them going for you..."

A sinking feeling began to gnaw within Anna's gut. "That's why. That's why you moved down to the basement, why you... stopped hanging out with me so much."

"Yes."

"I tried to hate you for it, tried to..." Running her fingers through her hair, she burned holes in the wall next to Elsa with her gaze. "You were going to let me think you just didn't care about me anymore, when all this time, it was these, these... things."

"That's... not completely true. It is true, but there's more."

Shrugging, Anna got comfortable on her seat. "Oh? Well, like what?" Then she sat up straighter. "Are you a werewolf, too?!"

Against her will, Elsa did smile briefly, but it fell away a second later. "They are a part of me, Anna. They feel things I feel, react to my feelings - even if they do operate on instinct a lot of the time, it's partially derived from my mind."

"So? I mean, it's not like you... like they..."

When Anna caught on, she went white as a sheet. Those creatures, whatever they might have been, were very insistent about getting into a few key areas. Her mouth. Under her shirt. Under somewhere else, as well. It was all they seemed to want in the world.

"Oh."

There was no answer. A few seconds later, when she cleared her throat, Elsa still didn't answer. Then Anna tried to approach - and she went into a frenzy of motion.

"NO!" she snapped, pressing herself back against the wall, eyes wild and hands stretching wide as she inched away. "I already told you, if y-you stay around me too long, especially when m-my brain is this tired, it's- I can't predict how I might-"

"That's okay."

"What? You- what?!"

Even though Anna's body was pushing Elsa's against the wall, she couldn't believe it was her in command. That seemed impossible, didn't it? Never before had she wanted to do such a thing with her half-sister...

Had she?

Their foreheads touched, her hands lingered on her neck.

Had she?

"No more, Anna," Elsa begged her - actually begged her, voice so urgent it sounded like it must have hurt. "I can't do this!"

"But you want to."

"Don't you see?! I can't!"

"But you - you, in your heart... you want this. Want m-me." It was so hard to force out that she felt faint after letting go of that last word. This was the most bizarre thing that had ever happened to her, and yet...

She was so accepting. So ready to let Elsa do whatever she wanted to her. Why? Not just because she had some strange, semi-magical affliction that had been hidden from her for years. That was bizarre, but not a reason to want to give in to her unnatural body's demands.

No. She had always had these feelings; they just weren't quite of a sensual nature. Before now, that is; even now, she wasn't sure that's what they were. But she had worshipped the ground Elsa walked on, needed her the way some girls in her class seemed to need boyfriends. Maybe it was in a slightly different way, but the level of desire was equal. And… in the same way, once or twice, if she were to be honest with herself.

Then along came this chance for her to truly help Elsa; to give her something nobody else could. Satisfaction. Carnally.

"I do," Elsa was admitting as Anna was slightly distracted by her own inward journey of self-discovery. "Always... always have. Ever since we started growing from girls into women, this... horrible part of my body has needed you in a way the rest of me didn't understand. I still hate that it happened, still can't stand myself! But I... I can no longer pretend that I'm not infatuated."

"Infatuated?" Anna chuckled in an odd voice as she caressed Elsa's side with one hand. "Is that all? I... ooh, what's this?"

Her hand circled around something quite solid-feeling that connected to her side, just under the arm. The stalk - if that's what it was, since she couldn't see it - was almost as big around as Elsa's wrist. As she felt down along it, the "stalk" split in two, turning into the long ropes that she had briefly imagined.

Saw. She saw them; they were real.

"My affliction," Elsa told her in a voice filled with shame. "They come and go, usually only appearing at night, and... and they tend to work their way free of my sleeves easy enough. Like tonight." Squirming as Anna kept testing its sensation, and feeling for the one on the other side, she finally whispered, "Resisting is... harder when you're touching them."

"Really?" Anna gasped, drawing her hands away - and she felt a few of the things brushing against her back. Elsa was maintaining better control this time. "Heh... and they're frisky. That's what you meant, isn't it?"

"Stop!" Elsa gasped - and Anna raised her eyebrows. "Not you, I... them! They're getting ahead of me again!"

"Okay," Anna whispered, kissing her sister's cheek - and feeling the electricity spark between them as clear as if it were an actual current from a live wire. Instantly, the teasing things found their way back to the same spots as earlier. "H-hey! Whoa there, just take it easy!"

"Why can't you understand this?! I'm not 'doing' anything!"

"I was talking to them, too," Anna chided her mildly as her hips squirmed back and forth. God, but they did feel good, even if admitting that was still not easy. Then an idea came to her. "Is... is there a way I can see them? I think I did for a second, but then they were gone... well, invisible. Not gone, clearly!"

"Not that I know of," Elsa breathed, surprised. "Wait, you actually could?"

"For a second. When I first woke up."

Elsa's excitement didn't wear off - in fact, Anna could feel that pretty clearly from the way her body was being caressed, lavished with rapid-fire affection. "Wow. The few doctors who believed me, and ran tests to find the cause of the weird happenings... they said that only certain people could see them, and they're very rare. Mostly, it's similarly-afflicted people who can see. Not necessarily girls like me who have these weird appendages, but just like, other non-humans."

She had been nodding along with everything, until she got to the last part. "Hey, don't say that - you're a human. Just one with, um... I don't know what to call them besides 'tentacles' or 'extra arms', but either way, they still don't make you some kind of monster!"

"They don't?" As the oddities all converged on her chest this time, pulling and squeezing and driving Anna mad with want, Elsa went on, "You're being used by my body's neanderthal brain just because it likes how you look, how you... smell. If that's not a 'monster', then I don't know what-"

"NOT YOU." She was so firm that the creatures halted in mid-movement. "Even with this? You're still treating me like a sister, and that's way better than I've been getting from you when you were trying to hide it 'for my own good'. So... so get out of here with that self-hating crap, okay?"

"But they want you and they will take you!" Elsa warned her, yet again. "Believe me, I'm... doing what I can to fight down my urges, but it's hard when I don't want to! Your body, it's so, so perfect, and it doesn't help that the person inside it is my favourite in the entire world! I need it so bad I can taste you!"

"Can you taste me?" The question was honest, and Anna shrugged one shoulder to show she at least recognised how sudden and weird it must have sounded to her sister. "I mean... with your little friends. One of them was in my mouth, could you taste with that? Feel with it? Was it like..."

They both knew what Anna was going to say. Her lips were so close to the other set that the meaning was abundantly clear.

"I wouldn't know," Elsa whispered softly, eyelids drooping as she kept caressing her with said "friends" - two of which were wrapping around her firm behind now, even supporting it somewhat. "Because of this, I haven't really kissed anyone. Not since the second grade, when that Hans jerk told me he wouldn't give back my umbrella unless I did. And I don't remember what that felt like, except annoying. So… so no, I don't know if it's like that."

Leaning in, Anna nudged her nose next to Elsa's - causing the elder girl to tense up completely. Her voice turned huskier, eyelashes fluttering a few times.

"Dare to compare?"

~ To Be Continued ~