The Two Sisters Pt. 01

Then the two girls were strapped into the hot-tub and the cleansings were started. It felt quite different to yesterday, Birgit thought. She sat back and enjoyed the enemas which certainly were not so hard as the ones her sister had to endure. Nevertheless, she felt very full and her lust rose steadily. Hopefully, I will get a massage the same as yesterday morning, she thought, and looked forward to her first orgasm of the day. Birgit was not disappointed. When the Jacuzzi was stopped and the water was drained from the tank and from the intestines of the two teenagers Simone came and released Birgit. She handed her a towel and asked her if she would like a massage as yesterday. Birgit could hardly hide her joy.

Simone's colleague will take care of Anita, who will be prepared for her upcoming treatments, Simone said.

After the massage, which was administered by the same assistant as yesterday, a satisfied and relaxed Birgit was led in the treatment room where her sister lived through her morning treatments.

Anita was strapped to the kneeling-rack and Birgit initially thought that she would get some high enemas again, but this time no enema equipment was to present. Instead of that, several specula, various dildos, plugs and a large pump bottle of lube was displayed on a supply cart.

Aha, Birgit thought, she will probably be stretched a little bit. Simone strapped Birgit onto the chair where she had sat yesterday with the waist belt.

The other assistant had already lubricated Anita's pink anus and was just massaging her sphincter. Simone took a speculum from the table and lubed it too.

Well, Anita, she said, after we have treated your insides properly yesterday, today it's your sweet ass's turn to be stretched. Simone inserted the speculum all the way into Anita. She slowly turned its screw and Birgit saw that Anita's pussy glistened wet in horny anticipation.

Bit by bit Simone opened her sisters anus, while Anita knelt quietly and with closed eyes in her bonds. Simone turned the speculum open pretty wide; to Birgit's astonishment, Anita took this without any noticeable emotion. Simone opened the speculum several times and carefully expanded Anita's ass more and more. Simone then took another speculum, which was already lubed by her colleague. This was slightly larger than the first and as Simone turned it open slowly, some heavy breath could be heard from Anita. Slowly she feels herself stretching, Birgit thought. Even this large speculum was opened step by step. When Simone had it opened almost to the maximum, clear signs of discomfort could be observed from Anita. She moaned loudly and closed her eyes.

Simone finally pulled the speculum out of Anita's anus and picked up a pretty thick dildo, Birgit estimated that it had about 5.5cm in diameter. Simone fucked Anita with it slowly for some time to loosen her up as she explained. After a few minutes of slow penetration Simone moved on to a slightly thicker dildo.

With this one Simone continued Anita's fucking and then switched to a thinner, but very long dildo, Birgit guessed it to be about 40cm long. I will now attempt to penetrate deeper into your guts, Simone said. Anita's asshole was already slightly open from the previous penetrations and the thinner dildo slid into her without any resistance. Simone slowly pushed the dildo deeper and deeper into Anita. After about 20cm, the first resistance stopped the further insertion of the dildo and Simone began to move it slowly back and forth and twisted it. Centimeter by centimeter, she worked it further into Anita's intestines, which made her moan slightly. Simone finally overcame the intestinal loops and the dildo slid further and further into Anita's ass, which was stretched out provocatively. Birgit's eyes widened. After a few minutes, Simone had sunk the entire dildo in Anita and pulled it out until only the tip was left inside. Then the journey into the depths of Anita's pleasure center began again. This time, already significantly easier, Simone pushed the dildo's full length inside. She repeated until Anita could take the dildo with no resistance. Simone moved up to an equally long, but thicker dildo and repeated the procedure. Anita enjoyed this deep penetration, which Birgit could clearly detect. Anita took this dildo with ease too.

Now it is getting a little harder, Simone said as she reached to a considerably thicker and much more rigid dildo. This time she had to overcome significant resistance and Anita sighed and moaned loudly as Simone worked the long toy slowly deeper and deeper into Anita intestines with rotational movements. Even this dildo Anita finally choked in her sweet ass. After several minutes of gentle insertion and removal by Simone, Anita got more and more relaxed. She was enjoying this treatment, which could Birgit see by her glistening pussy.

Now I will stretch your gut a bit, Simone said, reaching to a third cock, which was thick again and this time super stiff. It hardly bent, as Simone grabbed it at the far end and put it at Anita's already gaping hole. Birgit was curious if her sister would tolerate even this giant prick. The dildo was approximately 5 to 6 cm in diameter and like the others 40cm long. Slowly the smooth, thick shaft slid into Anita's ass. She breathed in and out deeply, surely she knew that now it will be quite demanding to absorb that long, stiff dick. Simone nudged into Anita's intestines and said: push! Anita took a deep breath and pushed out with her hot little ass. Simone stuffed the dildo further into Anita. The resistance that Anita's intestines put up against the invader was clear to be seen. Only millimeter by millimeter Simone could work it in. Again and again she pulled the dildo back and pushed it forward into Anita. Birgit thought that her sister would not make it this time, but under her moans and sighs, Simone worked deeper and finally put this huge, stiff dildo completely in Anita's sweet ass.

Simone let Anita get some rest from the strain, before she pulled the dildo back out and a new journey began in Anita bowels. This time, things got easier, but still the dildo slid into Anita's intestine with some difficulty. After several attempts Anita also took this dildo without any problems into her nether hole and Simone fucked her vigorously while deep groans came out of Anita.

Anita's ass was gaping wide as Simone pulled the dildo completely out from her and now reached from a butt plug that one of her colleagues had already lubricated.

So now you'll endure a little stretching before I spoil you later, Simone said to Anita. Birgit approximated the plug that Simone pressed into Anita's anus was a good 6cm in diameter.

Simone stuffed the plug into Anita and after a short gasp Anita had took it. Well, we'll try a number greater, Simone said smiling. Birgit noticed with astonishment that she lubricated another plug that was 7cm in diameter . That this giant toy should fit into Anita's little ass? Incredible. Her sister is ready to endure a very extreme workout, Birgit thought. Simone pulled the first plug out of Anita effortlessly and put the thicker plug to her rosette. This also sunk quite deep into the ass of her sister, but after about ¾ of the cone significant resistance occurred. Anita sighed as Simone pushed the plug firmly into her butt. Well, this one you'll feel some more, said Simone and asked Anita to push again. Anita pushed with all her strength and Simone squeezed hard. Multiple times the two repeated the game and finally Anita's anus gave up to the pressure and with some moans of pain the plug was seated completely. Birgit had leaned forward in her chair and stared in bewilderment at her sister. Anita was breathing heavily, but Simone gave her a little time to rest before she pulled the plug out and pressed it into Anita again and again. She repeated this two dozen times before she said that Anita was now ready for her loosening exercise. Loosening exercise? Birgit thought. What would happen now?

Chapter 13: The Sling

The assistant went out of the room and rolled in a strange frame from a secondary room. It consisted of thick, curved stainless steel tubes and looked like a big U laid on its side. From the upper tubes a thick leather board hung down attached to the frame with chains. Some restraints were attached to the chains. Birgit wondered for what this would be, something she had never seen before.

Only when Simone had untied Anita and asked her to climb into the sling did she realize what the leather board was for. Anita went to the rack, turned her back to the sling, as Simone called this device, and reached back for the chains. She drew herself up with her arms and sat on the stiff leather board that yielded a little from her weight. She leaned back and Simone helped her into the right position.

Anita's legs and arms were exactly at the joints of the chains and Simone and the assistant strapped Anita tightly in place. Her arms and legs were stretched out upward, so that she was virtually hanging down in the sling. Her round butt sticking out somewhat from the front of the leather board; the board also provided rest for the head. Anita's legs were spread slightly and her still gaping asshole was easily accessible.

Well, let's get your sweet horny ass loosened up a little, so that its ready for this afternoon, Simone said while she put on some elbow-long transparent latex gloves which enclosed her hands and forearms like a second skin.

Aha, thought Birgit, this afternoon is going even further with the anal treatments. Dr. Lay will probably come back to treat Anita and it will get very violent like yesterday. With mixed feelings Birgit waited. What Simone was up to with her sister?

Simone's colleague took a large amount of lubricant and lubricated Simone's right arm. It began to dawn on Birgit what was about to happen. She gasped. That cannot be! Simone wants to insert her whole hand into my sister? But she remembered the huge plug Anita had just swallowed and that one was certainly as thick as Simone's hand.

And that's to Anita's liking? A nice prick, that's what Birgit was eager to take in her behind, but a whole hand? Birgit was a little confused. She thought back to yesterday's talks with Anita and Dr. Lay where it was made clear that this all happened voluntarily and Anita wished her treatments to be that way. Maybe it was the stretching pain that drove her over the edge, thought Birgit, because she could not believe that such an extreme stretching would be possible without an significant amount of pain.

Mesmerized, she looked at Simone as she lubed Anita's anus and massaged it with her hand. She pushed two fingers into Anita; she was greeted with clear moans of pleasure. If she was honest with herself, she could see clear signs of strong excitement from her sister. Her pussy was now soaking wet. As Anita had been in the sling before, her excitement and anticipation were strongly visible.

Simone had four fingers in Anita's ass and fucked her slowly. Anita, full of pleasure, closed her eyes and moaned. Then Birgit's idea began to become a reality, Simone put her thumb into her palm and pressed harder into Anita's butt hole. Piece by piece of Simone's hand disappeared into Anita as she repeatedly pushed in up to the middle of her hand. Then she said: push! and as Anita closed her eyes and pushed, Simone pushed her hand, in a swift movement, completely up Anita's horny butt. Anita moaned loudly and Birgit's jaw almost hit the floor when she saw Simone's hand had completely disappeared into her sister up to the wrist. Gee! she thought. But just like yesterday, she was not rejected but a part of her subconscious found the sight very erotic.

Simone moved her hand now slowly back and forth in Anita's rectum. She moved out again so that Anita's sphincter extended provocatively and arched outward. Anita moaned louder and louder, it seemed that she was experiencing lots of pleasure. Finally, Simone pulled her hand back out completely and pressed it right back into Anita with a quick single push. Mhhhmmmmyeeessssss came from Anita.

Simone repeat this game several times, massaging Anita from the inside and brining her to fierce convulsions of desire. After a while of Simone fisting her really hard, Anita's anus was again wide opened and Simone's hand slid into it without resistance. Simone then slowly began to penetrate deeper into Anita.

Far above the wrist sank her fist and it went on and on. Simone apparently sought a way through Anita's intestinal loops, as she moved her arm gently back and forth and twisted it inside her victim. Anita now seemed to be back in the super hot state she was in yesterday afternoon, as her sister remembered.

Birgit saw that Anita was lying with her eyes closed and apparently had forgotten everything around her. She turned her head back and forth and let out guttural sounds. Simone had worked through the internal sphincter and her arm slipped deeper into Anita. Aoooohhhhhaaah, moaned Anita in the highest pleasure and moved her pelvis against the welcome intruder. Birgit watched breathless with her mouth wide open. Half of Simone's forearm had now disappeared into her sister! Incredible!

But Simone did not stop. On and on she pushed her arm deeper in the defenseless Anita. After a few minutes, in which she slowly fisted Anita, she had her arm actually sunk in up to the elbow. She pulled back until only her hand was left in Anita's small, firm ass and then pushed back into her up to her elbow again. Anita let out a scream of lust.

Simone's movements became faster and faster. Finally, she fisted Anita with the full length of her forearm. Yessss please fist meeee! Anita demanded in her highest pleasure. Simone pulled her arm all the way out and then punched it in with full force in one swift motion deep in Anita dilated ass. Please fist me deeper!! Anita barked out. Simone fisted her with full force nearly up to the middle of her elbow and after a few minutes Anita writhed in her bonds violently.

Faaasterrrrrr!!!! Anita cried at the top of her lungs. Simone stuck her arm deep inside Anita and then moved her arm very quickly back and forth but just a few centimeters. That finally brought Anita over the edge and she moaned uncontrollably as her huge orgasm overtook her. Exhausted and sweating, she fell back on the sling. Anita was breathing heavily, while Simone smilingly took off the gloves.

Chapter 14: Birgit has fun too

Then she turned to Birgit and said that she could eat something, while her sister is resting and would then be prepared for her afternoon treatments. Today lunch would be served an hour earlier than yesterday, so that afterwards there would be sufficient time available for Anita's treatment, said Simone.

She unbuckled the still confused, but at the same time also aroused Birgit and led her into the common-room. Again there was a light meal prepared for them on the kitchen. Today she stayed alone while eating and thought about what she had witnessed so far.

Birgit found her sister pretty extreme; that Anita's anal fetish had reached such dimensions she couldn't imagine before she attended these treatments. Birgit didn't feel anxious about Anita anymore, like she did yesterday, but she could not quite comprehend the whole thing. Surely, she had already discovered how exciting anal play can be, but this coupled with the masochism of her sister seemed quite strange to her.

Birgit could not imagine enduring such severe treatments herself. Still it was quite erotic. She was looking forward to the afternoon and silently hoped that she would get a nice easy treatment too, like she had yesterday. After all, the sight of her sister during her severe treatments had not only frightened her, but made her pretty horny. As Anita had her orgasm she was eager to feel something inside her ass and to be satisfied too.

After lunch, Simone appeared and told her that Anita is still being flushed and would then get a massage to be relaxed for the afternoon treatments. Do you also want a small treatment Simone asked. Birgit said delightedly yes, please. Ok, come with me then.

Birgit led Simone into the room where her bladder cleansing was administered yesterday. Birgit sat down on the gyno-chair and Simone asked her, while she strapped Birgit onto it, if she would like to have her ass dilated a little bit? Birgit blushed. Had Simone read her mind? Yes, Birgit answered, I would like to be stretched, but please not as strong as my sister. Simone smiled. Don't worry, your sister has been treated here for a long time and is therefore very well trained. I'm going to be very gentle with you.

Simone asked Birgit whether she could imagine coming here on regular base and let herself trained anally. Birgit said that she was pretty sure that this would not be the last time she would be here for treatments, but she would strongly prefer gentle ones. I'm probably not as predisposed to anal masochism as my sister, Birgit said. I like this clinic very much, but i want to keep up with the erotic and more relaxing treatments. Simone said she understood. Every patient would indeed be treated as she wished: Hard or Soft, she smiled.

Meanwhile, Simone had Birgit's anus lubricated and was massaging it gently. Birgit felt her excitement come and leaned back. Gorgeous! she thought. Simone penetrated her tenderly with one, then two fingers, and Birgit moaned in pleasure. Simone picked up a small speculum. I will now pre-stretch you a little bit before I take a dildo and will give you a nice fucking with it, said Simone and Birgit looked between her legs as the speculum disappeared in her ass.

Simone slowly turned it open. Birgit soon noticed a slight pain in her rectum and as it got quite uncomfortable, Simone stopped and turned the screw back. She opened again and repeated the process like she did with Anita. Birgit enjoyed feeling the same lewd things as her sister, and when Simone took a small dildo and stuck it deeply in Birgit's sweet butt she closed her eyes and moaned loudly as she got overcome with fierce lust.

Simone penetrated her for a while and then took a larger dildo. Like yesterday, Birgit was devoted to the sensations and hardly noticed that Simone had changed the dildo. Finally, she felt a significantly thicker prick at her ass and she opened her eyes. Simone now had a dildo of about 5cm in hand and pressed it slowly in Birgit rosette. Birgit almost said stop but her lust commanded her to let Simone continue. She closed her eyes and remembered what Simone had commanded during her sisters stretching: push! Birgit took a deep breath and pushed her abdomen out as during child birth. Her ass actually gave way and the dildo slid into her.

Birgit realized how thick this prick was, but at the same time she was totally horny at the thought of what a huge cock fucking her right now in her sweet teeny ass. Simone fucked her faster and Birgit noticed how her lust condensed into a huge orgasm. She imagined she was not being fucked by Simone, but from a real cock and with these fantasies she brought herself almost to the summit. Then she heard a low hum and at the same moment Simone pressed a vibrator on Birgit's clit. She tugged at her bonds, and seconds later she yelled her lust out in a huge orgasm. Wave after wave flooded through her, while Simone fucked her now very fast and violently in her ass. Only after half a minute did the orgasm subside and she got quiet.

Simone pulled the dildo out of her and washed the sweat from Birgit's forehead. She then picked up a Foley catheter and explained to Birgit that Anita's treatment this afternoon was expected to last quite long, and she would have no time in between to take care of Birgit. She would be also strapped and would not be able to stand up. Therefore, she would wear a catheter and would not need to worry about her bladder, Simone said smilingly. Birgit was a little surprised, but didn't complain, as Dr. Lay had commanded yesterday.