Christa suddenly realizes that for all her lust at the idea she hasn’t actually ever taken someone else’s underwear off. She only ever had the one boyfriend, and he always took care of that himself!

So, what would be hot if Annabelle did it to her?

She gets down on her knees in front of Annabelle and, staring up into her eyes, slowly pulls her panties down her legs.

This is very effective and Annabelle squeaks about it then shivers at the feel of air, of Christa's breath, on her nethers.

Her heart is pounding, thundering in her ears, at the tips of her breasts, between her legs. Her body is hot and trembling and eager.

Now that she’s naked Aire’s pheromones are much less impeded in reaching the air. Christa’s closer to where they’re emerging from, so they effect her first, but both of them are going to end up pretty effected by them.

Christa stares, spellbound, at Annabelle’s pussy. So close. She can just lean in.

And lick.

Annabelle shudders in pleasure, her legs wobbling, and sort of accidentally sinks forward, pressing her pussy onto Christa's mouth and grabbing on to Christa's head for balance.

It feels so good, and Annabelle trusts Christa. Her guard is down. The sensations crash through her and she welcomes it, glad to go wherever Christa is leading her.

She reaches around to greedily grope Annabelle's ass while she licks her out.

She's been dreaming about doing just this for a while. 

There's no need for her to interfere. The aphrodisiacs in her saliva and her lust aura rather ensure that, even if Annabelle orgasms, her reaction will be a desire for more, rather than anything resembling satiation.

Everything is going precisely as she wants.

The orgasm crashes into Annabelle without warning and she isn't thinking enough to ask Christa to stop before she gets too sensitive... but then she doesn't get too sensitive and the craving bubbles back up as soon as the orgasm is over.

Yes. Yes. Trusting Christa. She should just go on trusting Christa. Christa can do whatever she wants.

Whatever she wants.

She's letting her cock out of its sheathe before she realizes it.

She stands up to talk to Annabelle. Her cock ends up trapped between her legs, the head pressing against her pussy. 

She shudders. She was going to say something, but the sensation is distracting enough that the thought flies from her head, and she spends a moment standing there, stunned.

"W-What? Christa? That's..."

Extremely unexpected but even more arousing. Annabelle catches the firm rod between her thighs and helplessly grinds her pussy on it, one slow thrust of her hips that happens all on its own. Her body is screaming at her to get that thing inside her and that screaming ache of need is holding its own against the confused curiosity. Has Christa always had a dick? Is it new? Did she get it just for Annabelle?!

She thrusts helplessly, rubbing her cock against Annabelle's thighs.

"It's. New. From the cave."

She wants to put it in.

Remember what happened in the cave? Christa needs to be careful she doesn't fuck herself stupid again.

Her cock twitches at the reminder.

She wants to do that again.

“Let’s go to your bed.”

That’s where most of her fantasies with Annabelle take place, after all. Now that she has the opportunity to make all of them real, why not?

Annabelle's bed is right there, and she can fall onto it and Christa can fall onto Annabelle and Annabelle can spread her legs and grind her slick pussy against that hot throbbing shaft...

And Christa can guide her cockhead to Annabelle’s opening and thrust inside.

It doesn’t do the same brainmelty “must cum now” thing to her that Aire’s pussy did, but that’s all for the good, it’s better if she can make sure Annabelle enjoys it, rather than just pound away chasing orgasm. She leans down to lick one of Annabelle's nipples, listening for whether she enjoys that.

A vague awareness blossoms in the back of her mind that she’s not actually sure if her new cock can get Annabelle pregnant. She should be careful not to cum inside.

Aire, of course, knows full well that she’s sterile. It’s better, though, if Christa is trying to control herself and fails.

She neglects to inform Christa about her inability to get Annabelle pregnant, or the resonance tattoo she has that means she’ll orgasm as soon as Annabelle does.

Annabelle is so turned on, unnaturally turned on, she's never been this turned on. Anything Christa does feels like ecstasy, including nipple-licking. And with Christa's (Christa's! Christa has a cock! Christa is making her feel so good!) meat thrusting away inside her, another orgasm is already welling up in her and she's helpless to stop it.

And when Annabelle’s orgasm rolls over her, Christa begins to cum too. The unexpectedness of it means she has half a second for her just-formed resolution not to cum inside Annabelle to battle with her desire to thrust into her as deep as she can.

Her lust wins.

She presses into Annabelle until their hips are locked against each other and lets herself cum, spurting deep inside her friend again and again and again, all concern for anything farther away than the next burst of pleasure erased from her mind.

And, of course, the fact that Aire’s fluids are a powerful aphrodisiac should ensure Annabelle doesn’t have the presence of mind to care either.

It's not like they couldn't afford a discrete fleshcrafter if they needed one, but no, Annabelle is also swept away in the waves of orgasm.

She clings to Christa and cums, and kisses her and cums and clings harder and cums and her hips move on their own and she cums. It's going to take a while for her to even notice that so much time is passing during orgasm, that the orgasm is going on and on, because it doesn't feel like a dragged out orgasm, it feels gooy and hot and present like she's just gone over the edge no matter how long it's been.

And, of course, the resonance tattoo ensures Christa’s orgasm lasts just as long as Annabelle’s. Christa’s even more impaired in noticing anything odd than Annabelle, Aire’s body shifted and changed and tattooed in a dozen ways that ensure she’s swept up by the pleasure.

Eventually, however, it ends.

The primary thing she feels, once she’s come down enough to feel anything beyond pleasure, is a desire to do that again. She keeps thrusting.

At this point they’re both so bathed in aphrodisiacs, pheromones, and lust aura that she couldn’t have done anything else.

Neither can Annabelle.

Annabelle doesn't have any stamina mutations, so she at least is eventually just going to pass out in exhaustion during a lull in the orgasms, if they don't get ahold of themselves and decide to stop. Meaning, if Christa doesn't get ahold of herself and decide to stop. Annabelle is not making any decisions about anything right now.

Christa isn’t making any decisions either. The siren song of one more orgasm has too much of a hold on her thoughts for that.

Once Annabelle’s not actively thrusting back against her, Christa compulsively thrusts her way to one more orgasm, and when she comes down from it her own exhaustion is finally able to get the better of her and she collapses on top of Annabelle, unconscious.

Aire, still awake due to her own lack of need to sleep, decides to do again what she did the night before, this time focusing on the new information she’s learned from lessons, labs, and teachers in addition to just what she’s overheard. Now that Christa’s back to something resembling functionality it isn’t quite so urgent, but she thinks she’s been picking up on things Christa wouldn’t.

As she does, she tries to put together the pieces of what she’s observed.

Lesbian dancers.

A shielded geology teacher.

A new stealthcraft class, scandalously teaching things actually combat-related.

A vague suspicion that anyone interesting is shielded.

What kind of society has she found herself in?

Well, if she manages to drag Christa and Annabelle out of slumber not too long after sunrise and not set them fucking endlessly again, Aire will have plenty of new chances to find out, today.

It requires a substantial exertion of willpower, but she manages it. She can directly turn down Christa’s libido to something more sensible through her arousal seal, and she wakes her and Annabelle early enough that that the two of them can take a quick bath to divest themselves of all of those aphrodisiacs. The pheromones are a bit harder to manage, but once they're in the water the effect of them should be blocked. And she can keep control of her own arousal enough to prevent her lust aura from setting them off again.

Annabelle will perhaps stumble off to the bath masturbating, but getting the aphrodisiacs off along with the rest of it should result in that being a temporary state of affairs rather than how she spends her day.