Mariko’s Birthday Group-Sex Submission

Author: Manshimajin

I write with the agreement of my partner about experiences that I shared with her on her 40th birthday. I have included some ‘before’ and ‘after’ photographs taken at the time so you can perhaps visualise better what happened that night. She is particularly interested to find out, if possible, whether other members have had similar sexual desires and experiences and how they feel about it.

Mariko is a well-educated, well-adjusted career woman. We have always been very open and frank with each other when it comes to discussing our sexual feelings and wishes. Our experiences on her birthday were the end result of my taking our discussions seriously. Mariko has fir a long time harboured a very specific sexual fantasy that she likes to talk about when we are together. This is a mixture of bondage and group-sex. To use her own words her fantasy is for her to be ‘restrained, helpless and used’ by a group of men for as long as they want. Talking about this would get her very aroused and passionate. In the weeks leading up to her birthday this topic came up in conversation on a number of occasions. She appeared genuinely keen on the idea. I therefore decided that as her 40th was a special date I should try to bring her fantasy to life. I must also admit that it sounded pretty exciting to me. As part of my secret preparations I decided that it would be safest to involve some of our mutual male friends rather than complete strangers. Even though it would be more embarrassing for her it would probably be a much safer environment. I felt it was too risky with people we did not know.

On the evening of her birthday we bathed and returned to our apartment. In the bedroom as she was getting out of her yukata I restrained her and using some belts that I had prepared in advance tied her spread-eagled to the bed. At this stage I think she was expecting me to make love to her in this bound position – something we had done on a number of occasions. Instead I just took a ‘before’ photo of her as a memento. I then left her on her own. About 20 or 30 minutes later our doorbell rang. At the door were six of our male friends who had agreed to participate for the night. As we greeted each other noisily I wondered what thoughts were going through Mariko’s mind particularly when she heard us coming towards the bedroom.

As the seven of us came in she turned her head towards the door and recognised the guys. Understandably her reaction was a bit panicky! She tightened hard against the knots in the belts used to tie her down. She seemed to have accepted the reality that with her wrists tied back above her head there was no prospect of hiding her small breasts and dark nipples from view. However she kept attempting to pull her knees together to hide her wide-open and vulnerable genital area from the prying eyes of the newcomers. This she could not do as I had made very sure that her limbs were tied securely akimbo and she remained exposed and accessible to all. Needless to say our friends were very soon exploring the attractions of her body. Her breasts were squeezed, her sensitive nipples were stroked and pinched, and fingers probed between her legs and inside the cleft of her buttocks. Mariko jerked and squirmed as she experienced these preliminaries. Despite her moaning and wriggling I felt that we should keep going a little longer to see how things went.

As she lay spread open and helpless on the bed the guys were laughing and talking openly about how they intended to exercise their hostess in the hours ahead. One suggested that a good start would be to shave her pubic mound and leave her hairless for a clearer view of her pudenda. She begged us not do that – in a typically Japanese way her reason was because of her ‘modesty’.

Once our clothes had been hastily discarded we decided to start her evening off by having oral sex so that she could sample the diversity of her forthcoming entertainment. At first she was resistant to the idea of using her mouth and tongue on the guys. To encourage her to co-operate several of us started to work in unison on various sensitive areas of her body with our own tongues. After about fifteen minutes of attention to her sensitive nipples and her clitoris her body was shaking and trembling in its bonds. Watching this physical response one of the guys mounted above her face an d rubbed the glans of his penis along her lips. Beyond embarrassment Mariko almost automatically and succumbed to the inevitable She opened her mouth and let this first penis past her lips. She sucked very hesitantly along the erect shaft that she knew would soon be exploring more sensitive parts of her body. Her tugging against the ties and her moans had now been transformed to gagging noises as one after another her mouth was required to sample eager erections. Delighted moans emanated from whichever of us happened to be perched at that moment above Mariko’s inviting face! We had more or less agreed amongst ourselves that we should try to avoid coming in her mouth at this early stage in the night. Whilst we would build up our excitement by having Mariko fellate us, abstaining from ejaculating at this stage would intensify the sensation of our initial climaxes inside her vagina. Nevertheless some of us were pretty close to losing control as we managed to make her ‘deep-throat’ us. As all this was progressing I positioned myself again between her legs sucking and nibbling on her clitoris. Mariko does not normally get very moist before sex. Her legs trembled and her pubic mound and buttocks writhed with staccato little jerks and twitches on the pillow as her own juices mixed with my saliva. These movements were sometimes accompanied by choking sounds as the full length of a penis was filling her mouth with its swollen head touching the back of her throat. Mariko was rapidly being readied for her role as centre piece in more energetic activities to celebrate her birthday.

We men had decided beforehand that the fairest method of establishing the order in which we would take her first time round would be to draw numbers. We left Mariko tied down and went into our living room to do this. She must have wondered a little about the reasons for the excited sounds drifting through to her as the draw proceeded. I ended up as number five in the queue so I had to reconcile myself to the prospect of watching four of our friends having fun with her ahead of me. We agreed that we would leave her tied tightly in an X-shaped pattern to the four corners of the bed. This was in-line with her fantasy. In any case we were not entirely sure, despite her stated desires, how she would react in front of us all when she felt the sensation of unfamiliar penises working away inside her for the first time.

We were all a bit tense and worked up as we walked back into the bedroom. The lucky number 1 in the draw led the way. His penis was jutting stiffly out in front of him at the thought of his first taste of sex with a bound and helpless Mariko. As he approached the bed with the rest of us behind him we were all laughing and shouting encouragement to him. When she felt the firm downward pressure on the mattress caused by his weight coming onto the bed Mariko strained to lift her head off the pillow to see what was happening. As she saw the unfamiliar sight in front of her of our friend’s naked body and his erect penis manoeuvring into position to take advantage of her exposed femininity her body pulled frantically against her bonds. Then as he eased himself further into position between her legs she started to moan and struggle in a last desperate effort to stop him accessing the intimate areas of her spread-eagled body. She pulled her wrists and ankles hard against her ties. Her muscles strained and tightened and she made a series of urgent tugging motions. But all of this was to no avail. She remained pinned down in a wide-open vulnerable position, ready to be taken at his will.

I watched on fascinated as our friend started to work on her in front of us all. As his body stretched over hers Mariko made more panicky cries. Her face had taken on an embarrassed pink flush knowing that every detail of the intimate use of her body was to be closely observed by a crowd of lusting men eager to repeat whatever happened. It was clear that seeing him appearing above her confirmed to us all including Mariko that the group sex session was going to happen. She knew her first penetration of the evening was about to commence. To begin with we could see one of his hands rubbing through the pubic hair on her mound. A finger moved slowly up and down against her vaginal lips and clitoris. Then to the accompaniment of a squeal from Mariko this finger was inserted into her vagina moving about to find her inner moisture to lubricate her entrance. As she wriggled in an attempt to avoid this intimacy he appeared to be stimulated by the signs of her tension and powerlessness. He continued to toy with her this way for a while introducing a second and then a third digit into her. Mariko’s head was shaking from side to side, her feet and legs were attempting to pull inwards and she was making little mewling sounds. Inevitably the build up of his own excitement got the better of our friend. He moved his hand to his by now painfully erect penis and started to rub this up and down between Mariko’s labial lips. Her eyes opened wide and she gave us pleading looks as she realised the inevitability of what was going to happen to her. Her body continued to make short sharp jerks in its futile attempts at escape the coming penetration. We could all see our associate smiling down on Mariko with desire as he finalised the positioning of his penis head between her dark outer lips. We knew that despite any final resisting movements any moment now she was to be plumbed by his hungry penis.

Accompanied by a loud shout of lust from above, and a drawn-out cry from below, his hips suddenly pushed forward and down and the engorged head of his penis slid out of sight passing the labia and into Mariko’s tight vaginal passage. The sudden shock of penetration made her spread-eagled body jolt vertically against her bonds as the penis disappeared unstoppable into her no longer private sexual passage. When I enter Mariko she always lets out a little animal like cry. This time as the purplish head parted and passed her vaginal lips the noise she made was louder and shriller than I had heard from her before. Her ankles pulled against the restraints, her legs jerked up and down and her hands clenched tightly several times. As the intruding penis started to work backwards and forwards stretching the walls of her passage her cries turned into sobbing, panting moans of submission. These noises were accompanied by a breathless outpouring of ecstatic words from our friend as he pushed into her – and the sounds of lewd encouragement and envy from the rest of us as we voyeuristically watched the scene of bound sexual submission being enacted in front of our eyes. Mariko’s fantasy had turned into reality as in full public view she was held firmly in place and required to accommodate the lengthening thrusts of an unfamiliar penis between her legs, incapable of stopping her first enthusiastic pleasuring of the night. Her moans and gasps continued in response to the sexual activity being perpetrated inside her. It was clear from his actions and his words that our friend was enjoying the opportunity to mount my partner. Soon he was moaning and groaning in unison with her cries, his buttocks rocking backwards and forwards with increasing intensity as he worked himself as deep as possible between her widely parted thighs. After about ten minutes of this exercise the change to shorter, swifter movements, the grunting sounds he was making and the look of intense concentration on his face signalled to the rest of us that he was building rapidly to his climax. Sensing the changed thrusting of his penis and hearing him being cheered on by the other men around her Mariko realised that he was on the point of coming inside her vagina. As the moment arrived when his frantic, jerky, pumping began she started to moan loudly and to flex and tug against the bonds. She started to ask him to come outside her but her request was stifled as he leaned forward and passionately ‘French-kissed’ her. Her knees continued to move with little horizontal sideways jerks and her buttocks wriggled on the pillow as she realised that he was intent on fulfilling his own pleasure by ejaculating his sperm inside her. As the climatic pressure in our friend was being released in a series of powerful spurts he rose up on his arms shouted and swore noisily in a mix of ecstasy and crudity and finished inseminating his semen with several short violent deep pushes into Mariko. As his body’s spasms reduced in intensity he collapsed on to her breathing heavily and his spent penis gradually reduced in size and slithered out. For her part her eyes were closed and she was making short gasping sounds as her body shuddered in a reflex response to the lustful insemination that it had just had to accommodate. As the flaccid and slippery penis slithered from her body she let out a little startled cry. Staring between her legs we could all see the pale colour of sperm leaking from between her vaginal lips – the visible evidence of her first impregnation of the evening.

Aroused enormously by witnessing Mariko’s reactions to servicing her first client the rest of us were now calling for her next session to get under way to continue our entertainment. Amidst all of this bawdy carry on our first friend dragged himself unhurriedly off the bed as a second stiffly erect male climbed urgently on to replace him – leaving no time in between for Mariko to recover from her first encounter. She whimpered a little as the man’s face appeared over her. A startled and continuing cry from her indicated that, unlike his predecessor, this second friend was acting more with hasty fervour than any finesse. He rapidly thrust and shoved his stiff erection into her. Again her body jolted against the bonds as she was forced to accept intercourse with another strange penis inside her body. Once more the panicked noises came from her lips. No doubt he was trying to relieve the desperate ache that had developed in his groin as he had watched on waiting his turn. He pounded furiously away totally focused on achieving his orgasm and totally ignoring Mariko’s crying gasps and her vain attempts to tighten up her knees to slow him down. Once again she found herself spread wide and having to satisfy the primal needs of a shouting and groaning man riding her without any sign of reducing his pace until a series of violent jerking thrusts and loud triumphant animal-like grunts indicated that he was emptying his seed as deep inside her as he could.

For the next three-quarters of an hour or more a procession of new contenders lined-up to penetrate Mariko. Their activities were accompanied by her sharp little cries and futile attempts to close her legs each time she was initiated by a new penis, by thrusting male buttocks, and by exultant groans as all of us relieved our pent-up excitement by gang-banging her into submission in this position. Some of the group used her quickly whilst others took their time to demonstrate their love-making techniques. As she was fed by more and more penises her struggles against the bonds became less intense and more sporadic and she started to let out little yelps and moans as if her orgasms were intensifying and increasing in number.

By the time her seventh lover had emptied himself inside her, the first participant was feeling aroused by having to watch others continuing the process he had started. He indicated that he was ready for another tasting of the birthday lady. This time we undid her ankles from the foot of the bed, took the cords, tied one end round her knees and the other to the upper section of the headboard posts (you can see in the photo how well designed they were for this). This way Mariko presented an entirely new prospect, legs wide-open and thighs held back low against her body – allowing for extra-deep penetration.

With renewed energy we took our turns to pleasure her by pushing as far as possible inside. She cried, moaned, shook and wriggled at the sensation of these invasions pushing against her cervix. She pulled and tugged against her bonds many more times as she each of us rode her vigorously. As she sensed us tensing up to shoot our sperm as far inside her as our erections could reach her free ankles and calves flayed in the air. But our slippery fluids still emptied into her. Occasionally as one of us finished inside we would mount the bed over her face and get her to suck the penis clean in her mouth. She had tried to resist this at first but was soon persuaded to service us this way. As her tongue slithered around the spent but still sensitized penises the guys let out prolonged ecstatic moans. Most seemed reluctant for this pleasure to stop keeping her moist mouth active as long as possible.

My impression at this time was that whilst this legs back position was giving us males a lot of stimulation the previous spread-eagled position had stimulated Mariko more. Possibly this was because our penises had exerted more pressure on her clitoris when her legs were tied wide apart and down. Or maybe she was just becoming a bit exhausted, or more accepting, as the number of times we ejaculated into her increased? Or was it that the men were becoming less concerned with Mariko’s feelings and more involved in simply maximising the pleasure for themselves.

Being tied from her knees to the bed-head meant that Mariko’s genital area was very open to view. In addition to her labial lips we could also see the slightly upraised dark rosebud of her anus peering between her buttocks. This tempting sight was bound to attract attention. The inevitable happened whilst she was engaged servicing a recently spent penis with her mouth. Another of the group seized this opportunity to mount the bed and positioned himself between her legs. To begin with he inserted his fingers into her damp vagina. Using the slippery sperm as a lubricant he started to use this to moisten the delicate flesh around her anus. Feeling this happening Mariko appeared to be trying to pull her buttocks away from the intruding finger. Then she jerked and gave a startled gagged moan as a well lubricated digit pushed through the tight centre of the rosebud into her rectum and began wiggling around preparing the area for something larger. She seemed to be trying to lift her torso off the bed to escape the probing actions in her virginally tight rear passage. During the next few minutes the finger was removed, re-lubricated and reinserted on a succession of occasions. Whilst this made Mariko wriggle her buttocks with increasing intensity her capacity to say anything, other than stifled grunts, was limited by the penis in her mouth.

When he could feel her entrance was slippery enough the friend between her legs changed positions to give his rock hard penis ready access to the slippery area. Feeling the shift followed by a hard member rubbing between her buttocks Mariko tried to move herself down to encourage him to use her vagina rather than her rectum. At first it looked as if she had succeeded in diverting him from entering her body in a place where she had never been taken before. After a couple of positioning movements his penis entered her vagina as she had intended. Her body stiffened and relaxed as the intrusion occurred and she tried to move herself in rhythm with him to encourage him to stay in that location. But he had a different plan. After a few thrusts to make sure his penis was coated and slippery he withdrew and went back to work on the opportunity presented by her moisten and widely spread buttocks. By now the other man had slipped off the bed and the rest of us drew up close to watch the action. At first our friend moved his penis in circles around the tight but glistening entry. Then he worked up and down on her sphincter with slightly increased pressure. As this pressure increased he made slight inward and outward movements teasing and pushing at the unyielding doorway. Mariko had closed her eyes and was biting on her lower lip and appeared to be trying to clamp her buttocks tight to prevent any access. As he continued his preparatory movements our friend aligned himself centrally on the eye of the bud and made tiny wriggling movements. Mariko was by now whimpering a little. At that point he leant forwards and nibbled on one of her erect nipples to distract her momentarily. As he was doing this he pushed his penis with greater force against the locked door. Against this increased pressure from his erection her sphincter’s resistance suddenly collapsed and the entrance yielded like a ripple widening on water. A frantic jerk on the ties, and a gasping groan of shocked disbelief and pain, indicated that after forty years Mariko’s rear opening had just lost its virginity. After a few moments savouring the sensation of his conquest our friend slid forward penetrating deeper into her previously private and sacrosanct insides. He savoured this new pleasure to an accompaniment of bawdy comments from the guys and painful whimpers from Mariko.

As he intensified his efforts the rest of us stared closely from around the bed trying to grab a close view of the deflowering spectacle. The swollen penis was edging slowly past Mariko’s unnaturally opened sphincter. In turn, extended to its maximum, this muscle appeared to be gripping tightly onto the embedded shaft like a taut rubber band. Each time the penis edged further in a helpless groan or cry would come from Mariko as she responded to the stretching sensations accompanying the impaling of her anus. With her thighs held firmly back against her body our friend clearly intended to take full advantage of the position to introduce the full length of his penis into Mariko’s rectum. Gradually his member slipped from sight into the previously unvisited passage. When his pubic hair was finally brushing against Mariko’s buttocks he rested himself and rotated his hips for some time with little jerking movements to let his shaft apply more pressure to her expanded entrance muscle. Encouraged on by us he then began to work more deliberately on training Mariko to this new form of sex. Pulling and pushing slowly at first he started to move faster as the soft warm tissues of her rectum built up his excitement. Soon he was using long rapid strokes, exiting sometimes and then pushing back in hard and deep. Mariko was crying and squirming against this frenzied intruder. Then a loud sustained sigh indicated his intense pleasure as he became the first person to ejaculate sperm into her bowels whilst her knees pulled impotently against the bonds holding them and her impaled buttocks apart.

The immediate after-effect of this display was to arouse others to want to try this new sexual adventure. To facilitate this we decided to reposition Mariko on the bed. The bonds that tied her wrists and her knees to the bed head were undone. She was stood up beside the bed for a few moments as the pillows were adjusted on the mattress. Then she was encouraged back into position, this time face down. Her wrists were once again fastened wide apart in a V-shape above her head. Some final adjustments were made to the pillows to make sure that they were positioned under her stomach to push her buttocks upwards. Eager hands pulled her legs apart, the ties were fitted to her ankles and these were secured as wide open as possible at either side of the foot of the bed. From her face down position Mariko realised that this new position was intended to facilitate further assaults to further transform her rectum from the most private part of her body into a passage for sexual activity and pleasure. As these preparatory activities were being carried out she made little protesting sounds and tried to prevent the new tableau being completed. There were too many hands at work on her for this to be other than token resistance and she was soon laid out in place for the next phase of anal activity.

Though I say it myself Mariko is beautiful from the rear. She herself is enormously proud of how she still looks at her age with a firm, well-rounded outline. Now this lovely sight was tethered securely to the mattress in front of us with her slender back stretched out and her head lying on one side against the sheets. The rounded cheeks of her buttocks were pushed up for all of us to see, parted and accessible – ready for their next performance. Once again she was tied in place totally helpless, vulnerable to any sexual designs and practices we might require her to supply for our satisfaction.

Once again, accompanied by whimpering noises from Mariko, the mattress sagged with the weight of a man mounting the bed, this time from behind her splayed out legs. With very little ceremony two or three fingers were inserted into her vagina as she pulled desperately against her bonds testing their tightness. After a couple of minutes playing with her the assailant started to spread the slimy fluids from his fingers in the crack between her buttock cheeks. Mariko groaned and moved a little against the pillow. A sharp jerk and a muffled little cry marked the moment when one of his fingers teased past her sphincter. When he was satisfied with his preparations the man moved his body above Mariko’s back and let his erection come to rest between her mounds. Still sore from her defloration she moaned as the weight came onto her. To begin with he moved his penis up and down the enticing crack massaging its walls and the little wrinkled and puckered entrance eye. As this was happening Mariko’s buttocks jerked up and down off the pillow trying to make entry difficult for him. To stop this movement he placed a hand firmly onto the small of her back and pushed down to secure her against the pillow. Resting on her with this hand he used his other one to guide the head of his penis to the mouth of her anus. As she cried out he wriggled the head once or twice and then used his body weight to push against her resistance and to slide into her. The initial impact of having this tight and recently ravaged entry forced open again caused a sharp intake of breath and a pained gasp. As the shaft pushed forward and down into her rectum her hands twisted on her tied wrists and beat down on the mattress. Her mouth bit into the sheet. By now her tender passage was filling up with his warm flesh and his pubic hair was touching the soft skin of her buttocks beneath him. Laughing and commenting to the rest of us about how tight her ring was on his penis he pulled her hips up towards him and began to thrust in and out. Mariko was straining beneath these movements – her previously secret entrance and the passage beyond it now being used for a second time for sex. She realised the inescapable position for her was that all of us were planning to sample her backdoor pleasures over the next hour or two.

The spectacle of the two bodies fused together in anal sex was incredibly erotic and stimulating. Mariko lay spread flat and almost sacrificially on the bed, hips raised up to facilitate the actions of her rider’s thrusting loins as, with minimal respect for her soreness, they pistoned his penis in and out of her abused rectum. His inward thrusts pushed her down onto the pillows whilst as he pulled out her rump was drawn into the air a little as the tightness of her sphincter muscle clung onto his withdrawing penis. All the time her hands snapped open and closed as she responded to the sensations inside her rectum. Her submission lasted a full fifteen minutes as the man took his time to enjoy her. Every time he pushed deep into her muffled groans would come from Mariko as the nerves in her plundered behind reacted to the pain of the intimate rutting she was being forced to endure. Eventually he announced to us that he was ready to build to his climax so that someone else could have a turn enjoying themselves. For the next two minutes he strained and sweated above Mariko’s behind driving in and out with increased speed ploughing her anus with the same fervour that would be used in her vagina, indifferent to the heightened and now almost continuous sounds of discomfort coming from beneath him. When the moment came to shoot off inside her he pushed in hard with short rapid strokes each one accompanied by his cries of pleasure. As he withdrew Mariko lay spread prostrate against the mattress gasping with physical exhaustion.

An eager queue had now formed to check out Mariko’s anal delights. Again and again she felt the depression of the mattress and the weight of excited bodies mounting her from the back seeking and probing for her most secret of entrances. The majority of us eased our way into her anus slowly enjoying the slight popping and yielding sensation accompanied by staccato moans from Mariko as the penis head overcame the initial resistance from her still tight sphincter muscle. However occasionally a more pained sound signalled that the approach being used for penetration was less restrained, pushing hard and impatiently through the outermost barrier to the anal passage with a sudden energetic shove past her increasingly sticky and slippery sphincter. Stimulated by the sight of her tethered pale body spread out on the sheets and of her shapely uplifted buttocks being repeatedly and vigorously humped from behind encouraged several of the group to go back for a second helping of the tasty meal.
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By the time that Mariko’s first intensive initiation to anal sex had concluded she had been taken in her rear at least ten times and her rectum was well lubricated inside. At this point she was undone from her bonds and brought through into our living area. Laid out unbound with her back on the dining table she was fed simultaneously at the both ends by a couple of the guys who had had time to recover from their exertions. She accepted them in a submissive manner. When the guy in her mouth came he kept his penis in place requiring her to swallow as he came. She gagged a little at the taste but had no choice but to let it slide down her throat.

Two of the guys in the group were Japanese. It struck me that Mariko had seemed particularly embarrassed when she had had to accommodate them. With the relationship between men and women in Japan she may have felt that they would look down on her for having sex with so many gaijin. On the other hand if they had any hang-ups these did not stop them from being particularly enthusiastic to have sex with her. whilst Mariko was being taken on the table the two of them were watching on and talking to each other in Japanese. Mariko appeared to be aware of something they were planning but with her mouth engaged servicing a still active penis was in no position to say anything. After this sex session had ended our two Japanese friends quickly came to the table and held her whilst they bound her wrists together. In commanding voices they instructed her to go back into the bedroom with them both and tugged on the cord on her wrists to pull her in the right direction. It was pretty clear that they were telling her about what they were going to do together. It sounded as if whatever it was would be very exciting for them but might be strenuous for Mariko. With one in front and one behind they manoeuvred her into the room and half shut the door behind them. From where we were we could clearly hear them ordering her into position. Then things went quiet for a minute or so. We assumed that they were tying her in place. The two male voices started up again now talking excitedly to each other, full of laughter and anticipation. Suddenly a first sharp little cry could be heard coming from Mariko indicating that someone had entered her vagina. A man’s delighted grunts accompanied this. A few instants later we could hear the second man shouting commands. A much more basic and sustained moan came from Mariko and the two men laughed out together. We could only guess what was happening.

I stuck my head round the door. There was Mariko, her hands tied together and to the bed head, her body on all fours doggie fashion, its pale outline sandwiched between two humping males. She had lowered her head in embarrassment at being taken this way for the first time ever and her eyes were hidden from view beneath her hair. As they thrust into her vagina and anus simultaneously they must have been feeling each others penises through the thin walls separating the two passages they were using. The man underneath had Mariko’s small breasts in his hand and seemed to be milking them in a series of squeezing strokes from their little base to the end of her longish nipples. The one certain thing was that they were so excited by the sensations of working in her together that Mariko would not have to take this double penetration for very long. After about five minutes once again the quick, shorter, climatic strokes began inside her – this time at her back and front together. The guys were shouting and writhing with excitement as they sprayed themselves inside her at almost at the same moment. As one of them crawled out from under her and the other slipped more easily off the bed Mariko slumped down moaning onto the sheets with her arms now held in an upward position towards the bed head.

There were times from then on during the night when most of us either drifted around the apartment or slept fitfully. This rest was disturbed occasionally by the noises made as one or more of the group went into the bedroom to sample a little more captive entertainment –in privacy. When this happened the rest of us could hear sounds of movement from the room followed by furtive male whispers at the bedside to the accompaniment of exhausted and resigned noises from Mariko as she was repositioned and her bonds re-tied to suit whatever was planned. Next would come the muffled sounds of bodies moving onto the bed. Not long after this would come one or more intense gasping female cries. I knew that at that moment, close by to me in our own apartment, with Mariko arranged in some position that rendered it impossible for her to resist, the vulnerable outer defences of her vagina or her anus were once more in the process of being breached. By now whatever way she was being exercised would inevitably be a prolonged and slowly worked pleasuring. Occasionally amidst the usual sounds of activity there would be other different more strained and drawn-out sexual sounds coming from Mariko as some new form of lust driven experiment tested and stretched her. Gradually as the minutes passed the sound of male excitement would increase until a series of satisfied grunting noises signalled that the guys were impregnating her yet again.

When the morning came all of us were exhausted but decided on one final group sex session. This time to fulfil our plans she was placed on her knees facing the headboard, her wrists tied by two long leads to the posts and her ankles tied apart again to the foot of the bed. Each time we took her one of us would ease under her and force her to ride obediently onto his penis. A second person placed himself in front so that her mouth and throat could suck on his aroused member. When this arrangement was in place a third person came from behind and, easing her buttocks apart, slid into her by now more yielding anus. She was filled completely and as her occupiers took her in an almost rhythmical motion she had a series of orgasms – though by now these had become more like long, low shaking groans. Mariko’s birthday gang-bang ended with her body being filled this way several times over as different openings were tried for one last time by the owners of still performing penises.

After our friends departed she was utterly exhausted and rather incoherent. The two of us slept soundly for most of the day. In the evening we went together to the hot spring to recover – where I took ‘after’ photographs as mementoes her sensual ordeal

Neither Mariko nor I were able to work out exactly how many times her slender body had made love to our friends that night.

From my own perspective I told her that I had been surprised when she talked so often about the idea of having group-sex in bondage. But in some ways this seemed a rather Japanese obsession. It had seemed increasingly clear to me that she really wanted the experience. On the day, seeing her tied helplessly and having to accept almost continuous sex with our friends had made me more excited than I had anticipated. It had opened up avenues of sexuality and experimentation totally different to our normal practices. I felt both some jealousy and incredibly aroused to see and hear her being fucked repeatedly by men we both know; and to be imagining what thoughts were in her mind as she took penis after penis and ejaculation after ejaculation. What amazed me physically was how all of us had been capable of performing sex repeatedly. No doubt we were abnormally aroused by the sight of her bound body being used for the pleasure of the group. I don’t think that any of us had ever had so many climaxes in one night before.

But for me the fundamental reality of our experience was that each man had played a bit part whilst she stayed centre stage throughout the whole experience.

For her part Mariko told me that she had really wanted to make me aware of her particular fantasy and was trying indirectly to encourage me to do something about it without having to ask me directly – which would have been too embarrassing for her. However she had not actually expected anything to happen.

When she was lying spread-eagled on the bed and heard the noise of us all coming towards the bedroom she realised that I actually may have taken her ideas seriously. Totally exposed to view on the bed she had only a minute to think what might be about to happen to her. Then the door opened and she had to confront the idea of being seen naked in front of so many guys. She said that she sensed the ambivalence of her position. She wanted to escape from the tied down position – not only from shyness but also from fear as our friends probed around her body. But she also knew that this might be her one opportunity to know what her fantasy would be like in reality. She realised that it might be possible to stop everything at that moment but distracted by what was happening could not focus on what she wanted to do. Nor did she know how we might all react with her in a helpless state. In any case she could not get the words out and soon found this to be impossible as her mouth was busy sucking erect penises and the moment for stopping what was happening had passed!

She had experienced a sense of panic when she felt the first guy climbing onto the bed to have sex with her as she knew that once he started she would have to take us all. She felt that he worked his penis up and down the lips of her vagina for an interminable time. She kept on expecting his thrust, but began to conclude that he did not actually intend to go ahead. So when he suddenly lunged forward and came in to her the shock meant that she could not stop the loud gasps and screams that I had heard. At that moment she felt that she had lost control over the situation. She ceased being able to differentiate between her sensations of panic and excitement. After that she had submitted with much the same set of sensations as each of us took our turn with her. When she felt the changing movements inside her as each of us approached our climaxes she had not known what to do. To be tied down in such a way that she was powerless to prevent seven men from releasing their sperm into her was in her words ‘the ultimate submission’. But gradually through the night this had become for her just part of the whole surreal experience.

She confessed that anal sex was something she was both curious about and feared. Her introduction to it had been painful at first but something she had become more used to as the night progressed and most of us had taken her that way. Tied wide-open with her buttocks exposed she had half wondered if someone might try this entrance but had hoped to avoid the experience by attempting to satisfy us with her vagina and mouth. At first when she was being prepared for anal sex she did not think that her body would stretch enough for a penis to get inside her this way. She was startled and shocked to feel the head of our friend’s erection push past what she had thought was an impenetrable barrier. Her sphincter had felt uncomfortably stretched by his assault on her rectum. His rapid thrusting as he approached his climax had really tested her. She was further taken aback at the way in which all of us wanted to take advantage of her anally once she had lost her virginity there. She thought that perhaps anal sex was something that most of us had never experienced before. In her mind by having her in her anus it was as if we were thinking we were gang-banging a virgin who had no option to refuse the vigorous intrusions. The membrane between vagina and anus had felt much stretched when she experienced a succession of double entries in the night. She found these ‘night visitors’, coming to her bed whilst others slept, almost sinister. They approached her furtively. On their own or in pairs they had made her do things that she felt they were unwilling to do openly in front of everyone. In her bound position she was unable to prevent this. She endured them inside her but tried to make them climax quickly – with little success. It was in her words rather like foxes coming into a hen house to taste the chickens whilst the farmer slept

I asked her physically how she felt from being penetrated so many times in a relatively short period. By the time the morning came she had just about reached her limit, though she was surprised that she had still been capable of to taking three of us in her simultaneously on a few occasions. Being actively engaged trying to service us in all her available entrances had given her a kind of ‘floating’ orgasm as she had no idea which of the penises was stimulating her, or if they all were. Once they had begun she had not wanted these final group sessions to conclude as by then she said that she was in a type of submissive, erotic trance.

She said that the experience had converted her bondage fantasy into reality which deep down was something that she had wanted to experience. When she had initially discussed this with me she had not realised how many times a group of men could perform and would probably not have hinted at the activity if she had realised how many times she would be taken by the group. But, like me, she had come to recognise that with the exception of her we had all had time to recover between our exertions in her. It excited her to sense how much she had been able to take and how the surrender of control had allowed her to experience things she would never have dared to ask for normally as a respectable middle-class woman.

She had encouraged it and in effect dared me to do it – and as she said I had more than called her bluff.