Yes/Chad/Try something really perverted
You can feel something building up inside you. With this ring, the possibilities before you are nearly endless. There's no doubt that Emily is your favorite sister by far. The last thing you want to do is harm her. But with the power you now wield over her, the temptation to run wild, to push the limits of everything, overpowers your conscience.
Coolly rising from your chair, you head to the cupboards and retrieve a tall glass. You examine it as you carry it back to the table. Setting the empty glass down in front of your sister causes her to look up at you with a curiously raised eyebrow.
"Em," you start, still chewing on the sentence in your head. "Did you forget how much you like to drink a glass of your pee with your dinner, just like you do every night?"
"Er- Yeah," she replies, the ring doing its job. "I suppose I did. Umm... excuse me."
Slightly embarrassed, seemingly more for her forgetful faux pas than the freakish habit you just gave her, she grabs the glass and begins to shuffle away from the table.
"Hold on!"
She pauses, looking back at you.
"I thought you were going to pee out here."
"Ew! No! Why would I do that?"
That wasn't a question. It was barely a fully formed thought. Your nerves are getting the better of you. She's walking away again.
"Weren't you going to show me... for school? It's for my anatomy homework, remember? Remember the permission slip I gave mom? And how you said the kitchen lighting is better for pictures? Oh, and how you've been looking forward to helping me for a month?"
The litany of questions causes her to freeze in place. One good question would have been fine, but after fumbling the ball you wanted to make sure your recovery was bulletproof. She turns back to you with a mostly neutral expression, showing only a tinge of disgust.
"Of course I do! Still, high school science is so weird," comments Emily, moving toward the kitchen with her glass. "No one will know it's me, right? How many pictures did you need again? And you're going to delete them after the assignment, aren't you?" Her worry increases a little with each question she asks.
"Well, actually, a video would probably get me bonus marks."
Emily stops in front of you and passes you the glass. "A video? Really?" she cringes a bit more. "I guess if it helps you." She finds the waist of her boyshorts under her tshirt and starts shimmying out of them. "We should probably take pictures and video then. That should get you even more marks."
You pull your phone from your pocket. "Good idea."
With her shorts and panties around her ankles, Emily is still covered by her long tshirt. She grabs the hem of her tshirt then looks up at you with a blush. Standing in front of you bottomless is still causing your little sis quite a bit of embarrassment, even after her newly acquired attraction to you. Of course you can sort that out for her.
"Are you excited to show me?"
Her expression perks up in an instant. "Yeah, I am!" She lifts the hem of her shirt without any more hesitation, her worries washed away. Exposing the bottom half of her toned torso also leaves her crotch on full display. "See? This is my vagina!"
Your dick responds before you do. "Yes. Yes it is."
"I think I can pee for you," she states, reaching for the glass. "I do kinda have to go."
"Oh. Not yet. I just, uh, need some other pictures first," you reply. You crouch down in front of your sister and lean toward her bare crotch.
"Okay. Should I... do anything?" She's still trying to be helpful.
"Yeah. Open your lips for me."
"My lips?" she repeats, the term unfamiliar to her. "Oh, you mean like this?"
Emily tucks her shirt under her chin in preparation. She then opens up her knees and hunches forward slightly before grabbing at her soft vulva with her fingers and spreading herself wide open.
"Yeah, that's it." You snap a few quick closeups.
"Your science teacher must be a pervert," determines your sister. She's blushing harder than ever now as she exposes all of the pink delicate folds of her sex to you.
"Probably. Hey, can you name all of the parts of your privates for me?"
You mostly want to find out how much she knows since she had to catch on to what 'lips' meant. But the ring works its magic on your question, erasing any possibility of awkward stumbling over words.
"Sure! Here's my labia minora, here and here. Up here is my clitoral hood. And if I pull it back all the way you can see my clitoris too!"
You stare at your sis in shock as she continues prodding and pointing out all the tiny details of her still developing girl parts. The ring literally made it so that she could name every part of her vagina even though she seemed clueless about it a moment ago. This ring really is all powerful.
"Should we do the video now?" she asks, already having rattled through a comprehensive talk on the sexual anatomy of 12 year old girls.
"Yeah. Definitely." You pass the glass to her then feel your evil side twitch a little more. "Can I film you drinking it too?"
"Yes you can. Er, but maybe you should blur my face or something? Or just leave that out of your assignment?"
A grin creeps onto your face as you keep pushing her, the power intoxicating. "Don't you want people to know that you drink your pee? Aren't you proud of it?"
"Yeah, I guess I would like people to know. It's better than hiding it from people, even if they think it's weird. But... then your whole class will know this is my pussy!"
"That makes you hot, doesn't it?" Knowing that's all it takes makes your cock spasm a little in your pants.
"I... yes," she admits to herself, hanging her head. "But it's so embarrassing!"
"But you are okay with me seeing your pussy?"
"Of course I am. You're my brother. And... yeah." She's giving you that look again.
"Well I suppose I could leave it out."
"No! I mean, I didn't say that. I mean... I feel so dirty!"
It seems Emily is becoming conflicted with all the different feelings you're pushing into her head. She's definitely having a hard time reconciling them. Best to make her move on for now.
"Can you just pee in the cup now, Em?"
"Yes, sorry."
Your sis holds the top of the glass and positions it between her legs. She uses her other hand to pull up on her crotch and aim for her target while her shirt is still pinned under her chin. A moment later her urethra opens up and a stream of slightly yellow liquid hits the inside edge of the glass. Emily moans a little, her gaze switching between your phone and your face as she gently paws at her clit while she pees.
"Are you peeing in the kitchen?"
"Bree! You're going to ruin Chad's video!" Emily barks in shock and humiliation just as she finishes filling her glass.
"Give us a minute Bree, okay?" You offer as a calm contrast. Your littlest sister wanders closer but keeps her distance given Emily's outburst. Bree's dress is nearly soaked through with water and slightly transparent because of it, almost as if she bathed with her dress on. Somehow that wouldn't surprise you. You turn back to Emily. "Now, would you tell everyone what you do with your pee?"
You pan your phone upward, following the glass as your sis lifts it up to her mouth.
"Yes, I drink my pee with my dinner every night, like a good girl!" She boastfully smiles for the camera then brings the glass to her lips and sips her pale urine.
"You can chug it, right?"
"Uh-huh."
Emily tilts the glass and opens her mouth wide, pounding back her piss with gusto. You hear Bree gasp and giggle her confusion at what's going on. Em gulps eagerly then slurps the last drops of her beverage from her upturned glass. She uses the back of her hand to wipe her mouth clean. Her cheeks are burning red.
"Ahh. So warm."
"Wow. Just... Wow! That was great, Em! Can I just get a few more pictures?"
Emily let go of her shirt while finishing her drink, which she only notices after your comment. "Oh, sure!" She helpfully lifts it again to expose her mostly featureless sex once more. A single drop still clings to one of her smooth lips, perhaps the only drop that she didn't take into her mouth. You snap a few more angles then glance between your two sisters.
What the fuck now?
You should probably fix this.
Or do you get even weirder?
Or would you rather . . .