Yes/Chad/What is Emily doing anyway?
Alright, hold up. What is Emily doing in her room?
Walking out into the hallway as you involuntarily jerk off is very unnerving. But you creep over to your sister's bedroom door and give a few quiet raps on its exterior.
"Hey, it's me."
Your hand is freed up before your words exit your mouth.
"What," says Em, weirdly a statement more than anything.
"What are you doing?"
"Nothing," she quickly replies.
Yeah now she's doing nothing. What about 10 seconds ago? Wanting to test your theory, you grab hold of your dick and start stroking. You wait a few seconds before asking, "I bet you're touching yourself."
"No..." she replies plainly, more guilty than offended.
"No? You're not very convincing. Why didn't you go say hi to Mom when she got home? Why didn't you let her in a minute ago? Perhaps because you were - gasp - masturbating?" You add a touch of horror to your voice trying to rib her a little since you're certain she must be.
"Chaaad. Stop being gross."
Getting yourself excited just talking about this, you keep razzing her. "You really do have a thing for pee if it got you that excited. Geez, what would mom think? I bet you've been going ever since, huh? You just can't even stop yourself. Am I right?"
"Y-yes..." Oh. Whoops. You kind of got carried away there. After a delay she continues. "I mean, no! I wouldn't... you don't know! You... You can't ask your sister that!"
God dammit. Stupid ring. She wouldn't normally ever admit to touching herself, that you're sure of. But of course she's doing it for real now. You just couldn't shut up about it. She can still lie and try to deny it though.
"Okay, okay, I'm sorry. It's just... I only wanted to ask because... I can't stop either. It's like something weird is going on."
Silence.
"Maybe I should come in to talk about it. Can you open the door?"
"Yeah."
That's still the ring answering, but at least this time it's more helpful. A couple seconds later Em swings the door wide open, her face a rosy pink. She very promptly turns away from you and runs to her bed. What catches your eye as she runs is her petite pale ass; she's wearing a thin white undershirt and nothing else, although that makes some sense given what she was doing in here. You slip inside of Emily's bedroom and close the door behind you as she clamors into her single bed and under the covers. You try to pull your hand off your cock as you walk toward her and again find that you can't. Emily sits up, her legs crossing while one hand holds up the sheets and the other is well buried under them. Even if you didn't know what she was doing under there you would instantly question why she would choose to sit like this.
This is all from that comment you made earlier now, you're sure of it. The one where you said the two of you always masturbate together. That apparently means if one of you chooses to do so the other has to as well. You'd swear she would stop if you walked in on her doing it in her room, but she's still going. Maybe she expects you to know that she thinks you two do this all the time. But then she could still stop, right? What else happened? All you asked was whether she was still masturbating. Is the ring forcing that issue too? How long will she do this for? Until you say otherwise? Until she finishes?
Em looks at you with a pained and humiliated expression. You know that embarrassment gets her horny now, but she still may be having a hard time with this. You're pretty sure you could make her stop touching herself now that you have a better idea of what's happening, but you kinda want to see how this plays out.
"Are we really doing this?" she asks, a bit contemptuously.
"I dunno. Seems like it."
"Yeah... I guess so."
It's all sorts of awkward standing next to your middle school sister's bed beating your meat while she jills off under the covers right in front of you. You hadn't really intended on doing anything in particular when you started experimenting with your darker side, but you surely never would have envisioned this. Wanting a real answer for once, you slip your hand into your pocket and wiggle the ring off your finger. You're pretty sure whatever masturbatory feedback loop you managed to kick into gear won't stop itself any time soon.
"You doing alright?"
Emily nods, glancing all around you without actually looking at you. It seems like some sort of attempt from her to avoid staring directly at your erection. "Yeah."
"Cool. I'm... sorry I jizzed on your back earlier."
Silence.
"It just happened, you know? Guys can't jerk off forever. I didn't mean to get it on you." She meets your eye for a moment then looks away again. "Do you forgive me?"
"No." It's actually refreshing to hear a no from her. She was very quick to shoot you down too, but then thinks for a moment. "Not yet anyway."
"That's okay. I get it." You do your best to play with the head of your dick instead of stroke it, wanting to come across a little less menacing standing with your cock out next to your sister. To further that, you sit on the edge of her bed while you both continue to touch yourselves.
"Was your shower with Bree okay?"
"Yeah. But she kept asking me to pee on her."
"Oh... did you?"
"No. I told her I didn't have to go. So she kept trying to get me to drink some water."
"Geez Bree. Settle down." What a weird conversation to be having. "Although... It was kinda fun to pee on her, in a messed up way."
"Yeah. We're so weird!" she chuckles a little. "You know, I might've done it again in the shower. Like, I kinda wanted to when she asked. But I really couldn't."
"Yeah. Less mess to clean up in the shower, right?"
That's not where her mind was. That was obvious. So she just nods in agreement. But you use that to push her on it.
"Wait, you liked licking all of our pee off the floor?"
Em looks away from you. "Y-yeah."
You have to glance down at your hand just to make sure you didn't slip the ring on absent-mindedly. "Yeah?"
"Yeah. I mean, it was weird. Really weird. But yeah, it was kind of fun. Embarrassing too, but at least I'm not the only pervert in our family. Do you know why Bree wants us to pee on her so bad? Have you, like... done that with her before?"
"No!" you emphatically reply. "I was sorta joking at the time. But she really did like it, didn't she?"
"Yeah... me too."
You share your sister's guilty grin as you confide in each other. She starts rambling about how bad she feels and how good she feels, how conflicted she is about everything that happened at dinner. The entire time, her eyes are laser focused on you as you beat your meat. Emboldened, you pull down on her sheets only for her to snatch them back.
"Hey! I... I'm not done."
"I know. Why can't I see? You can watch me. Why can't I watch you?"
"Because."
"That's not a reason."
"Yes it is! It's cuz I said so!"
"Okay but I watched you do it in the kitchen before."
"Yeah and that was embarrassing too. I don't normally drink pee off the floor"
"But you had no problem showing me before."
"That was different. I was just helping with your homework," she insists.
"Maybe. But that got you really horny, didn't it?"
"Chad! I... I dunno..."
"I bet you're still excited to show me your pussy, aren't you?"
"Chad! I'm..." She pauses to try and drum up some indignation. "T-this is different, Chad. You shouldn't watch me touch myself. Brothers and sisters are... they don't do that. I know that we do this together, but... you don't have to watch."
"Then why are you watching me?" Raising your eyebrows, you point out, "Most siblings don't pee on each other either. We're not like most siblings." Emily frowns a little then hides a smile. You've got her there. "Do you know what I think?" Emily shakes her head. "I think you want to show me but you won't let yourself. And I think you should."
Silence takes over again as Emily refuses to reply. You're more than happy to take that as an admission. After giving it some time to sink in, you reach for her sheets again. This time she doesn't stop you. She allows you to pull the blankets from her grip and you both watch as the edge is tugged away from her lap, the white beach of her bare thighs exposed by the quickly receding tide of her bedding.
Of course now that she's let you go this far you don't want her changing her mind. Standing briefly, you pull the sheets you were sitting on the rest of the way down her legs and all the way to the end of her small bed. Sitting back down beside your bottomless sister in her tight white undershirt is enough of an adrenaline rush, but for her to openly rub her tiny little slit right beside you is incredible. Yeah sure, it's still the ring, whatever. But this is really happening.
Em doesn't quite know what to do with herself now that all of her sinful touching is exposed. Aftering covering her face for a second she straightens her legs and sits up taller. A second later she leans back and locks her ankles to clench her thighs together. Next she crosses her legs Indian style, searching for the most comfortable and least awkward way for her to touching herself next to her brother. But she never pulls her fingers away from her pussy.
"There. At least it's fair now."
Your sis reluctantly nods, hopefully spurred on by her embarrassed arousal. Even though you just talked her into that last part without the ring, the power it gives you is truly intoxicating. Getting her to take her shirt off too would be kind of fun, for her to be splayed completely naked right beside you just masturbating away. When is she going to stop anyway? You could make her do it forever if you were so inclined. Make her rub her tiny clit down to an even teenier nub. You play with the metal band in your pocket pondering the infinite possibilities.
"Hey, have you ever had an orgasm before?"
She really thinks about that one. "I... dunno. I don't think so."
"I think you'd know. Do you want one? I could give one to you."
She furrows her brow. "You already gave me one of yours."
"No, no, I'm serious. It's not a joke. If you've never had one, haven't you wanted one? Why else do you touch yourself?"
She is quick to reply, "Cuz it feels good."
"Okay. But you wanna feel really good, right?"
Em looks you over suspiciously then shrugs. "Yeah. I mean, it'll happen. I'm sure I'll have one someday."
"No, TOday. Right now." You wiggle the ring back onto your finger in your pocket then pause to form your question. "Hey Em... do orgasms feel amazing? Do they give you a huge rush?"
"Yeah they do," she nods sincerely after the ring works it's magic.
"Do... you... orgasm whenever I touch your ear?"
You don't wait for her reply. You reach out and gently cup her ear in your hand as soon as you see the ring has done its thing. Instantly, Em gasps the deepest breath she's liable to ever have taken. Her eyes pop wide and her body stiffens dramatically. Emily's petite little cheerleader body bucks sharply pulling her head away from you. She pulls back so sharply that the back of her head slams into her headboard.
"OWW-uh-eee-uhng..."
Em slumps down until her head is on her pillow, reeling with pain and pleasure. You're positive she really did hurt her head but her first ever orgasm is rocking her so hard that she can barely process it. You also notice that you've both stopped masturbating. What a time. Hard to know now if it came about due to her orgasm or the blow to her head, but she has indeed stopped touching herself, freeing your hand as well.
"Ah shit. Em, I'm sorry." You reach out to rub your sisters head apologetically, but you end up touching her ear again.
"YEEE-arrrghmmmrrr!!!"
Emily's entire body arches up away from her bed, propelled by a huge upward thrust of her hips and suspended by the tips of her toes and the base of her neck. Her body shivers, legs trembling, as a second orgasm hits her before the first one could be given the chance to settle down. Em has both her hands over her mouth to stifle her screams of ecstacy. Her butt clenches over and over as she humps the air, pushing her pelvis up as high as it can go. An animalistic heat emanates from her twiggy little form, her eyes shutting tight as raw sexual pleasure consumes her. It's all she can do to survive the huge rush of chemicals and sensations suddenly coursing through her.
Okay, maybe you're an asshole... but this is way too tempting.
You spin around, standing for a better view. As you grab hold of your dick with one hand, you reach out and brush Em's ear yet again with the other. A mere fleeting graze of her lobe is all it takes to add a third orgasmic wave that crashes into the first two that are still duking it out.
Emily's legs fail her. Her body crashes back down to the bed as her lower limbs steadily writhe and shake in submission. A high pitched squeal desperately tries to escape from her throat as Em continues to clamp her mouth shut, now with one hand. That's because by jerking off you've forced her to touch herself, as 'always'.
With her fingers once again on her slit, diligently rubbing her clit through her orgasm, she seems to be driven crazy by her own touch. She's writhing in weird and unexpected ways now, as if she's trying to evade the masturbation that her hand has suddenly forced upon her. The bottom edge of her top slips higher up her figure as she rolls about in front of you, her toned tummy sucking in, flexing, twisting. Her body is still trying to hump the air and elevate her pussy as high as it can despite her mostly useless legs, and she still manages to lift her butt off of the bed by arching her back alone. Her eyes are open again but they're unfocused, staring at the ceiling.
After some intense bucking of her hips it looks like she's calming down, letting go of her mouth and slowing to jerky baby humps induced by her own hand. But you can't have that. You squeeze her lobe yet again which kicks her back into motion, then, over excited, you start tapping the side of her head. 5 times? 10 times? You're not even sure how many times you made contact with her ear once she started tossing her head around. You just wanted to watch her explode.
Emily's limbs do speed up but her body actually slows down, her back locking into a solid arch. Her legs twist and shake. Her jilling arm wobbles and vibrates. Her free arm frantically waves and grabs at you, even slapping your cock. She's totally lost control and all but lost her breath, shallow pants of desperation interrupting a steady, pathetic, whimper of a moan. Slapped with brutally stacked orgasms, her eyes rolling around in her head, and with her dainty digits mercilessly pawing her stiff little clit, your strained little sis starts to squirt.
It's just a trickle at first, one brief spray of scattered drops followed by a dribble onto the bed below before she slumps down for half a second. But when she stiffens again a moment later and lifts her crotch back up into the air, the focused attention on her clit and convulsions throughout her body culminate in a crazy show. Emily squirts down the length of her bed and onto the floor, her pressurized stream of pleasure turning her into a literal sprinkler. Her spraying starts and stops, interrupted by each gasping breath. You count 4 separate bursts before you lose focus. Is it pee? Is it cum? Who cares. It's the hottest fucking thing you've ever seen, and you blow your wad onto your favorite little sister for the second time in one day.
You weren't really trying to cum on her, but there was no way you were holding anything back after seeing Em's vagina turn into a water gun. It's amazing you hadn't cum already given how long you've been jerking off. You have to credit your earlier kitchen jizz for helping you last this long. And then, as now, you cum all over your sis's body. Ropes stretch across her stomach, her arms, her shirt, as she flails about. Em's own orgasm is way too intense for her to notice or care. Even as you finish up with slow satisfied strokes, her trembling body is still squeezing out short little gushes of joy from her pussy to further soak her bed and thighs.
As soon as you stop stroking yourself, her hand flies away from her crotch. Once that little bit of extra stimulation goes away she starts to calm down, relatively speaking. She rolls from side to side, curls up into a ball, stretches out as far as she can reach with an intense shudder, then finally collapses limply with her head on her pillow, hey body coated in sweat and cum, with no signs of movement other than her chest rising and falling as her panting continues.
You put your dick away weirdly proud of yourself (in the most literal sense that you made her cum) grinning stupidly and watching silently as Emily's breathing slows. You are already learning to appreciate Em's tight nimble body after her contortions of pleasure, but the sexual glow now radiating from her is something special. Inspecting her sex up close, her slit is still utterly drooling slimy pussy juice even though she's totally out of it. You clearly are as well (out of it that is) since you don't realize Em has passed out until her heavy breathing turns into near snoring.
That's definitely your cue to exit. You feel a little bad leaving her lying in her own spunk (let alone yours) but you're not going to try to wake her up after all that. So you grab the thinnest sheet tangled at the end of her bed to keep her cool and stretch the now dampened bedding up and over her sprawled out form. If anyone finds her like this the sweet wafting scent of her sex alone will tell them all they need to know about what she was doing in here.
You really should take care of some other things
Although there's lots more you could do