The Erotic Mind-Control Story Archive

Under the Panties

by Pan

Chapter 3:

The next time Sophie went down on her brother, she experimented with touching herself. She didn’t get off—a large part of her focus was still on perfecting her oral technique, and I knew that she wouldn’t do anything to risk putting her own pleasure in front of her brother’s.

But as she reached between her legs, her whole body twitched, and I saw Eli’s eyes widen in shock. His awkwardness had made it clear that these interactions with his sister were the first sexual contact he’d ever had, and despite Sophie’s mention of touching herself, I doubt he’d really pictured exactly what that meant.

His breathing increased, and Sophie and I were equally stunned as he grabbed her hair and started roughly fucking her throat. Before long, he was shooting his load into his gasping sister’s mouth.

Their memories told me that after each previous encounter, his sister had made sure everything was normal straight after he came…at least, as normal as their incestuous liaisons could be. But as Sophie sat back, stunned, her throat sore and her sense of safety gone, the silence stretched on for an eternity.

“Thanks,” Eli eventually mumbled, and ran back into his room.

A single tear ran down Sophie’s face before she did the same.

* * *

The awkwardness of that encounter didn’t manage to slow the pair down at all. Sophie’s strict instructions meant that she knew she had to mend the bridge as quickly as she could, so less than two hours later, she was in her brother’s room, on her knees, draining his cock of cum.

This time, she made sure to take control of the situation. She sat back on his bed, even as his cum was traveling down her bruised throat, tilted her head to the side, and smiled.

“So,” she said lightly, “you ever seen a girl play with themselves before?”

Eli shook his head, and her smile broadened. She brought her fingers to her mouth, and his eyes followed them as they moved down, pausing briefly to tug roughly at her nipples, and then moving between her legs.

For obvious reasons she didn’t push her panties to the side (I’d gone with a less strict—but more fair—interpretation of her wish. Crotchless panties were out, as were those panties with the inward-facing sex toys. As long as she was in the room with her brother, below-the-waist penetration was out of the question).

Instead, she slowly traced patterns on the gusset. Eli was staring rapturously at every move her fingers made, and when a damp spot appeared—and began to slowly grow—his mouth dropped open.

For her part, Sophie was staring directly at her brother’s entranced face. A pink tinge had appeared on her face, and even though I knew she was doing this as a part of her instructions, it was pretty clear that she was enjoying it.

Soon, Eli was rock hard again, and it was to her brother’s cock that Sophie turned her attention. Her fingers began rubbing her crotch more firmly, and soon the redheaded teen was panting and whimpering slightly with pleasure.

“Oh,” she gasped, as Eli’s hand moved to his cock, and he started slowly stroking himself. “Oh…”

“God, sis,” Eli stammered. “I just…wow.”

“Please,” she moaned. “Please, Eli…cum for me. Please.”

“Really?” he asked, nervously, and her eyes rolled back in her head. I could tell that she was getting close.

“Please,” she panted. “Cum…cum on me.”

“What?”

“Cum on me, Eli. Please. Please…I want it so bad. Cum on me.”

Eli got onto his knees, his hard cock pointed directly at his sister’s face. I could hear their parent’s car pulling up into the drive—I typically don’t like to interfere with people outside the wish, but I made sure that the masturbating duo couldn’t hear their arrival, and ensured that the parents were distracted by a chatty neighbor.

I didn’t want anything to interrupt the show developing in front of me.

“Ungh!”

Sophie’s body began quaking as her orgasm hit. The sight of his sister losing control was all it took to push Eli over the edge—he urgently pumped his cock, cumming for the second time in thirty minutes.

His load—not quite as plentiful as the previous two had been—shot out and hit his sister on her face, her exposed breasts. She lay back with pleasure, allowing her brother’s seed to slowly slide down onto her stomach, and then dribble down the sides.

The sound of the front door opening made her open her eyes in shock.

“Shower!” Eli hissed, and she nodded, frantically running into the upstairs bathroom while he got redressed, and sprayed his deodorant into the air to mask the smell of cum.

Out of curiosity, I checked the parents—they didn’t suspect a thing of their children. Why would they? Just to be safe, I made a few more tweaks. Now, unless they actually caught their kids in the act, they would be none the wiser as to their activities.

I was interested in the direction these siblings were taking things, and being interrupted by their parents was the least interesting direction that things could go.

* * *

Over the next three weeks, small patterns began to emerge. Every day, Sophie would get Eli off two or three times. Mostly with her mouth, but sometimes he’d order her to play with himself while he came onto her face or tits.

I say “order”—at first it was a mumbling request, the type you’d expect from an insecure boy who’s been given a great gift. But as it became clear that Sophie was sincere in her desires to please him, he started to grow more confident. Once or twice he entered her room uninvited, insisted that she drop whatever she was doing, and forced her mouth to his cock.

She responded enthusiastically—I a day or two trying to decide whether she was feigning the enthusiasm or whether Eli’s sister had a genuinely submissive streak.

It wasn’t until I noticed that she was more likely to play with herself on these occasions that I reached a conclusion. She’d always touch herself when he requested it, but on the rare occasion that he ordered her to suck him off with no foreplay, or fucked her throat with no regard for her feelings, she’d sneak a hand between her legs whether or not he was watching for it.

I’m stumbled across quite a pair.

The wish was simple—nothing under the panties. To ensure that it was upheld, I made sure that Eli never broke it either. He had no idea about me, about his sister’s situation, or about the condition that she’d wished for, but he would never try to remove her panties. He’d never push them to the side, he’d never complain about them being there.

And so—considering his lack of awareness of the situation—it surprised me that it was almost three full weeks before he tried to take things to the next level.

Eli had just been awoken by his sister’s mouth on his cock. Most nights she slept in bed with him, sneaking out in the morning (although my meddling ensured that even if they were caught, the parents wouldn’t think twice about it, simply considering it a cute throwback to their youth or something similar).

Some nights, he would get off inside her mouth or on her chest and face and then push her out of bed. To my surprise, the issue wasn’t cuddling up with his cum-coated sister; some nights, he just liked to sleep alone.

On this morning, he’d told her to sleep in her own bed that night, but she’d still sneaked in to see if he wanted a blowjob before school.

“Hey sis,” he’d said groggily, smiling down at her big green eyes as she blew him. “Mmm, that’s good.”

“Thanks,” she said with a grin, before returning her mouth to his cock. She’d woken up almost fifteen minutes before coming into his room—constantly being used for sex, even by her brother, had caused Sophie’s libido to spike, and so she’d gotten herself off before paying her brother his morning visit.

Through her panties, of course. That was now the only way she got off.

“God,” he said. “I want to fuck you so bad.”

Sophie’s eyes widened with shock. They hadn’t discussed it, not since that first time, but the unspoken agreement was that what they were doing wasn’t sex.

It was just oral! It was fooling around.

“Mmmm,” she moaned noncommittally.

Eli’s eyes opened, and he sat up slightly, watching Sophie hungrily follow his cock up the bed.

“I mean it,” he said. “I want to fuck you.”

I couldn’t help but grin. I hadn’t spent the entirety of the last three weeks with these two—there’s only so many times you can watch a teenager suck her brother off, after all—but I’d found myself coming back over and over, compelled to know what would happen next.

I’d put Sophie in quite the predicament. Her wish was binding—even if she wanted to fuck her brother, her wish ensured that she couldn’t. What’s more, she couldn’t tell him a thing—not about me, not about the wish, not how their current situation had started.

I had been wondering when Eli would try to bring things to the next level. For most teenage boys, a cock-hungry redhead sucking you off daily would be more than a dream come true.

But something had told me it would be worth it to stick around, and the boy hadn’t disappointed.

There was a long pause—to Eli, I suspect it looked like Sophie was thinking things over. In truth, she was most likely panicking—trying to work out how to get out of this without the option of telling her brother the truth.

Without being able to tell her brother anything.

As she thought, her hand continued to pump up and down her brother’s erection. Finally, a sad look appeared on her face, and she slowly shook her head before returning to the blowjob.

My powers are plentiful, but perhaps the one I’m proudest of is the power of my self-control. It was deeply, deeply tempting to delve into Eli’s mind right then and there, to see exactly what his reaction to the rejection was. It helped that I knew it would always be accessible, that at any point I could dive in and see what his memory of that moment was…but memories are so often colored by later events, and I knew I’d never again have the chance to see exactly how he perceived that raw moment.

But I held back. To know his exact reaction would be to know how the rest of the story proceeded, and I was having far too much fun seeing it play out in realtime to ruin that.

Neither sibling said a word. Sophie finished her blowjob—Eli reached down and grabbed her head at the moment of his climax, but tenderly, not forcefully. As his sister dutifully swallowed down his seed and swayed out of his room, he looked after her thoughtfully.

That night, while their parents were watching television, Eli pulled his sister aside for another blowjob. As her mouth wrapped around his cock, he repeated the request.

“I want to fuck you.”

Again, she merely shook her head, and finished sucking him off. This time, as he came, his thrusts were more aggressive than normal.

It’s hard to be frustrated when your balls are being perpetually emptied, but somehow Eli was managing.

Over the next three days, he asked her several more times. Each time, she merely shook her head in response. Once or twice, he tried to probe further, but Sophie would always find an excuse to leave, or just start sucking him off again.

It turns out sexual distraction is a spectacular way to change the subject when dealing with a teenage boy.

Finally, Sophie and Eli were alone. Their parents had gone furniture shopping, and Sophie had almost immediately stripped down. More and more she was spending her time around the house wearing nothing but panties, ready to be used by her brother whenever he wanted her.

“Sophie,” he said as she entered the room, “Do you want to fuck me?”

I could practically hear Sophie’s heart beginning to race. She hadn’t been a great liar even before becoming her brother’s sexual slave—now, she was so accustomed to being completely exposed, the idea of lying to him probably hadn’t occurred to her for weeks.

I, too, was wondering what the answer to that question was. In my time, I’ve seen people justify all manner of things to themselves—“it’s not incest, it’s only oral” would be far from the greatest stretch I’d encountered.

But I’d seen the way Sophie looked at her brother. I’d seen her bring herself off, panting with pleasure, mouthing his name. His cock had become the centerpiece of her young life, and his arousal was something she thought about day and night.

Did she want to fuck him?

“No,” she replied stammeringly, and it was clear to both Eli and myself that she was lying.

Before he could respond, she sat beside him on the couch, and leaned in to kiss him.

Another fascinating aspect of this relationship was how infrequently they kissed. I’d never specified a quota or anything like that, but…considering how the relationship had started, I’d have thought making out would be a regular facet of their sex life.

Instead, it was a rarely encountered phenomenon. A reluctance to kiss after a blowjob I understood, but frequently they wouldn’t even peck before them. Sleepily waking up beside them was the most common time that they would lock lips, but aside from that, it was not a standard part of their foreplay.

And then, to my delight, she took his hand and placed it between her legs.

After a quick check that the restrictions I’d placed on Eli’s actions were still in place, I sat back and enjoyed the sight of the young man’s first encounter with a pussy. Panty-clad, of course, but still wet and willing.

He had no idea what he was doing, but that was to be expected. Sophie, for her part, managed to strike a good balance between feigning extreme arousal (and I’d seen her get off enough to know that she was faking it) and offering tips and advice.

Despite his clumsy fumbling, despite the layer of cloth and his total inexperience, it only took the lad twenty minutes before his sister was shaking with orgasm.

All three of us left the room with a huge grin on our face. Eli, for obvious reasons. Sophie, because she thought she’d managed to distract her brother—at least for the moment—from his preoccupation with fucking him.

And me, because I’d seen the truth.

She hadn’t distracted him at all. She’d inadvertently told him that she did want to fuck him—and that if he got her turned on enough, she’d do it.