Makoto waited on the sofa for her sister to come home, feeling restless. Partly because Sae had texted that she had big news earlier, and partly because her sister had forbidden her to masturbate today. It was nearly 6 o'clock. Usually, Makoto had cum twice already by now, once in the morning and again in the afternoon. Makoto was so used to her frequent orgasms that even half a day of denial was getting to her. She had already had to change her wet panties as soon as she had come home from school. It had only been an hour, but the new pair that Makoto had on now was already rather damp.
Makoto was listening keenly for the tell-tale sound of the lock on the door to their apartment turning. There was nothing else to do at the moment. TV could not keep her attention, and studying was entirely out of the question. All she could do was wait for her sister to come home from work.
Eventually, Sae did. Makoto picked up the drink she had prepared for Sae from the coffee table and stood up from the sofa as soon as she heard the sound she had been waiting for. She walked over to the door, feeling both eager and nervous. Makoto had learned how important it was to keep Sae from getting into a bad mood. Having Makoto be standing next to the door, ready to give Sae her usual gin and tonic, was helpful to that end.
Sae opened the door and smiled at Makoto as soon as she saw her. Makoto smiled back, thinking that her sister must be in a good mood. In addition to her purse and briefcase, Sae had a fancy shopping bag slung over her arm. As usual (now that it had been two weeks since they had begun their activities together) Sae looked to be just as relaxed, confident, and poised as she had appeared when she had gone to work this morning.
Sae closed the door behind her and walked right up to Makoto. Instead of taking the drink from her, Sae drew Makoto into her arms and kissed her. Makoto was quite pleased with this development. She kissed her sister back eagerly, even as she made certain not to spill the drink in her hand. Sae must be in a very good mood indeed.
This was a new experience. Being held by Sae like this meant she was pressed against Sae's larger breasts, and that was enough to make Makoto's nipples harden instantly. The feeling of being in her sister's arms was entrancing, but she soon felt Sae's hands drifting lower. Makoto's eyes widened as Sae's hands slipped under Makoto's skirt and cupped her ass. Sae pulled Makoto into her rather possessively, so that Makoto was left with an inescapable message of ownership from her sister.
If Makoto's panties were damp before, they were well on their way to being soaked now. Makoto let out a quiet moan that was muffled by their shared kiss, but Sae heard her nevertheless. Sae broke off the kiss with a knowing smile and released Makoto, reaching for her drink as she did so. Makoto stood in place, catching her breath and watching as her sister downed half her glass.
"You said you had good news, Sis?" Makoto ventured curiously.
"I did. You remember when I said a new round of promotions were coming up?" Sae replied with a cool smile, evidently waiting for Makoto to ask again.
"Yes. So...?" Makoto asked dutifully, having a clear grasp on what her sister wanted to hear by now.
"So...you're looking at the new Public Prosecutor for Chūō Ward." Sae said simply, downing the rest of her cocktail.
Makoto hugged her sister, knowing how much Sae wanted this promotion. Sae had been an Assistant Public Prosecutor for three years. From what her sister had told her, it was rare for any APP to be promoted before they'd been on the job for at least five years. Of course, the extreme hours Sae worked probably balanced that out.
Sae hugged her back, but it seemed her sister was in the mood for something else, given that took the opportunity to grab Makoto's ass again. Not that Makoto minded in the slightest. This newly affectionate Sae was a welcome surprise to her.
"I bought a few things on my way home that I think you'll like. I'm sure you've been climbing up the walls since I didn't let you touch yourself today. Go to my room and strip. I'll be there in a few minutes." Sae commanded briskly, releasing Makoto.
"O-Okay, Sis." Makoto replied shakily, her heart racing.
Makoto did as she was told and hurried to Sae's room. Any command Sae had given her had best be obeyed quickly. Failing to do so inevitably put her sister in a bad mood, and Makoto's ass usually ended up paying the price.
As soon as Makoto went into Sae's room, she began stripping down. Her top, skirt, panties, tights, and low heels came off, and she stacked them neatly in the corner. Now completely naked, Makoto sat on the edge of Sae's bed nervously. Her nipples were rock hard and refused to go down, and her pussy was so wet that even with her legs tightly closed, Sae's sheets were going to be dirty in a short while. Makoto would be the one to change them after this was all done, of course.
A few minutes later, Sae walked in. She had only taken off her black heels and was still carrying the shopping bag she had come in with. Makoto was quite curious about what her sister had bought. Sae took a few moments to take in Makoto's naked form before she set the bag down on the bed. Her sister reached in and produced a soft, padded black blindfold.
Sae held it up in front of her. Makoto looked at her sister for a moment before she realized that Sae was silently asking for some measure of consent from her. Makoto nodded readily, and as soon as she did, Sae placed the blindfold over Makoto's eyes and tied it tightly behind her head. Just like that, Makoto's vision was entirely obscured.
Makoto could only rely on her hearing now. She listened closely to a gentle rustling next to her and eventually understood that Sae was taking her clothes off. Makoto let out a frustrated noise that Sae laughed at. Her sister had chosen the order of her actions specifically to deny Makoto the pleasure of seeing her sister naked - the very same pleasure that Sae was currently enjoying.
Next, Makoto heard the crinkling of the fancy shopping bag Sae had been carrying. Sae was taking out another item from the bag Makoto now knew to be from a sex shop. Makoto's heart began beating faster as she imagined what it could be. Handcuffs? A riding crop? The possibilities were many. Makoto listened keenly for whatever clues she might be able to glean.
The next sound Makoto heard was puzzling to her. A rustling sound from the direction of her sister came again, but it was heavier this time. As if Sae was putting on something weightier than cloth. At the end, Makoto distinctly heard two subtle sliding sounds, one after the other. Rather like the sound shoelaces made when tied together. Makoto was stumped by what the sound was, but she stopped caring soon after. That was because Sae had quietly stepped up to her. Makoto held her breath in anticipation, and a moment later, Makoto felt Sae's lips on her own. Her sister was kissing her in the same rough, possessive fashion as earlier.
Makoto kissed Sae back readily, eager for any stimulation she could get. Sae threw her for a loop a moment later, however, as she put her hands on Makoto's shoulders and forcefully pushed her down onto the bed. Makoto fell backward onto Sae's silk sheets with a quiet gasp, wondering just what her sister had in mind.
Two sharp, impatient slaps to Makoto's inner thighs followed. Makoto winced and spread her legs as wide as she could, exposing her now dripping pussy to her sister's gaze. Was Sae actually planning on licking her pussy for once? Makoto had pleasured her sister in that way two dozen times by now, but Sae hadn't expressed the slightest interest in returning the favor.
"It's ridiculous how wet you are. It's only been a day. I guess that's what happens when a pervert isn't allowed to masturbate." Sae said in a voice that managed to combine contempt with a twisted sense of fondness.
Makoto let out a whine. Not only had she been denied the ability to touch herself today, or even to see Sae's glamorous body, but now her sister was using the one word that was guaranteed to turn Makoto on even further. Being called a pervert by Sae was always volcanically hot to her.
From the way the bed shifted, Makoto was able to feel Sae crawling forward until her hands were resting on both sides of Makoto's head. Sae was perched on top of her, and curiously enough, Makoto felt something soft but heavy resting against her inner thigh, very close to her pussy. What was that? Makoto felt as though she ought to have figured it out by now, but she was too turned on to think properly at the moment.
"It looks like you're ready. Time to give your selfish little pussy what it wants." Sae declared in a husky tone.
Makoto felt the tip of the strange object being placed against the entrance to her pussy and realized just what it was. It was some kind of dildo. Combined with the tying-on sounds she had heard earlier, it meant that Sae had to be wearing some kind of strap-on! Sae was going to penetrate her. Makoto's breath caught as she realized that she was about to lose her virginity to her sister.
Sae inserted the head of the strap-on slowly, but as soon as it was nestled inside, she drove forward with her hips. Makoto winced and silently bore the sharp pain she felt as her hymen was torn. Sae pushed the strap-on as deeply as it would go, then paused suddenly. Perhaps she had noticed the evidence of Makoto's former virginity.
"You're...you're a virgin? Since you stole my vibrator, I didn't think you were. Why didn't you tell me?" Sae asked in a faint tone of surprise.
"It's okay! I wanted it to be you." Makoto answered softly, still bearing the pain of her decision.
Sae said nothing. Nor did she move. Makoto could only lay as still as she could, taking advantage of Sae's cessation of motion to give her pussy time to adapt to the seemingly huge object inside of it. The next thing she knew, Sae was kissing her again. This time, Sae's kisses were soft and comforting. Makoto, who couldn't remember the last time she had received this kind of gentle treatment from Sae, returned her sister's kisses in the same warm fashion. Something about Sae's unexpected tenderness helped to greatly reduce the pain was in. After a minute or two of this, Makoto was ready to continue.
"It's okay, sis. I'm alright now." Makoto said quietly, unable to tell what expression Sae might have.
"Okay. I'm going to continue. Tell me if I'm going too fast." Sae said in a brisker tone.
Makoto nodded and then winced as Sae slowly withdrew the strap-on, then pushed it in at the same slow speed. The pain returned, but not as fiercely as before. At least Makoto's wetness, usually nothing more than a barometer for how excited she might be, was finally being put to use for its intended purpose. Despite how tight the fit was, Sae's strap-on slid easily into her pussy and just as easily out.
Sae began to get into a slow, cautious rhythm. Makoto couldn't tell for sure, but she thought her sister might be holding back for her sake. Makoto didn't want that. Even if she was still in a little pain, she wanted Sae to enjoy herself. Her sister had just gotten the promotion she had been working years to achieve, after all. Sae deserved to have all the fun she wanted to have tonight. With that thought in mind, Makoto began to let out quiet, hopefully believable cries of excitement that she didn't necessarily feel at the moment.
That worked. Sae picked up her pace immediately, no longer holding back. And even though it resulted in slightly more pain than before, Makoto bore it without showing any sign. Sae's thrusts were measured and forceful without being too forceful, thankfully. Her sister's experience (from Makoto's frequent exploration of Sae's pussy with her tongue, she knew that Sae was not a virgin herself) made it so that she was able to fuck Makoto without causing her unnecessary pain.
As Sae continued to fuck her with the strap-on, Makoto's pain faded away. In its place was a deep, subtle pleasure that was novel to her. Makoto's previous idea of sex was limited to plenty of stimulation to her clit and the to surface of her pussy. Those were highly sensitive areas, and the stimulation Makoto was feeling from the recesses of her pussy didn't really compare. At least at first. But as the minutes went by, that broader feeling of pleasure increased until it was threatening to overwhelm her. Makoto's cries of excitement no longer needed to be faked.
Sae was letting out moans of her own. Did she like fucking Makoto that much? Maybe the strap-on she was wearing had its own method of pleasuring Sae. Makoto, with her vision still obscured by the blindfold Sae had put on her, had no way of knowing.
"Remember...remember what I said. You...keep your activities confined to the apartment. I won't...I won't have people thinking my sister is a pervert." Sae commanded possessively, pausing her statement every so often to draw in air as she kept thrusting.
Makoto let out a loud moan at Sae's words. Both because of how she had just heard her personal trigger word, and also because Sae was implicitly laying claim to her pussy. Makoto had absolutely no interest in anyone other than her beautiful sister fucking her, so she was fully onboard with Sae's command. Sae grabbed Makoto's wrists roughly and raised her hands into the air, bringing them up to Sae's breasts. Makoto got the message and began fondling Sae's impressive large breasts, giving her sister as much stimulation as she could.
Having done that, Sae dropped her hands to Makoto's waist. Sae got a firm grip there and began pulling Makoto closer to her, timing her pulls to coincide with her thrusts. Makoto's breath was taken away as she was penetrated even more deeply than before. Every time Sae's strap-on contacted a particular part of her pussy, the sheer pleasure she felt forced an exceedingly sexual cry from her lips.
Sae picked up her pace yet again, and from her sister's moaning, it appeared that Sae was close to climaxing. Makoto was nearly there herself. Both of them seemed lost to pure instinct as Sae thrust forcefully with her hips, while Makoto met them as eagerly as she could, desperate for every spike of pleasure she could get.
Sae and Makoto climaxed together soon after, both of them letting out loud cries as they did so. Her sister's slightly deeper, more refined voice complimented Makoto's own. Sae drove the strap-on as deeply as she could into Makoto's pussy and held it there, her body shuddering as she did so. With her vision obscured by the blindfold, Makoto nevertheless saw white stars as she came, the strap-on providing an overpowering stimulation to the strange, extremely sensitive part of her pussy that it was resting against.
Makoto had no idea how long the two of them spent connected, each of them trying to recover. It could have been minutes or hours, but all Makoto cared about was that she was together with Sae like this. She could feel the warmth of Sae's naked body pressed against her own, and that was not something Makoto got to feel too often. She decided to enjoy it as long as she could.
Eventually, Sae pushed herself up and removed Makoto's blindfold. Even though the light in Sae's bedroom was dim, Makoto couldn't help but squint. She had become accustomed to the darkness even since Sae had put it on her.
"I can see you enjoyed that. I should have known a pervert would cum so hard even during her first time." Sae remarked tiredly.
Makoto's pussy gave a tiny throb at her trigger word, but she was too tired herself to get very aroused. Even with Sae's strap-on still nestled inside her. A moment later, Sae pulled it out gently and stood up from the bed. Makoto got her first look at the strap-on and gaped. The purple penile-shaped dildo looked to be silicone. It was probably no larger than an average penis, but the knowledge that the thing had just been inside her was mind-blowing.
"I'm going to take a shower first. I expect to see the bed made when I get back." Sae ordered casually, untying the harness tied to her hips.
"Okay, sis." Makoto answered, pushing up into a sitting position.
Makoto watched as Sae took the strap-on off, pulling part of it out of her pussy.. As she had suspected, on the opposite end of the strap-on there was a smaller dildo that had a great many bumps and nubs on it that had given Sae her own pleasure from fucking Makoto. Makoto was curious about how that part felt in comparison to the larger dildo she had just received.
Now entirely naked, Sae turned to leave. Makoto opened her mouth to say something and was momentarily distracted by the sight of her sister's perfect ass. She managed to remember it right before Sae disappeared down the hall.
"Wait! I just wanted to congratulate you on your promotion again." Makoto called out quietly as her sister stopped to look back at her.
"Thanks. You helped, so I thought you deserved a reward. Did you like it?" Sae asked with the same casual air, raising an eyebrow.
"Yes. I liked it." Makoto answered with a touch of embarrassment, her cheeks reddening.
Sae smiled and walked away. Makoto took a moment to collect herself before she got off the bed and began to change the sheets as Sae had told her. Maybe if Sae returned from her shower to find her bedroom spotless, she might be in a good enough mood to fuck Makoto one more time. Makoto could hope, at least.