Marnie pleasures her sister

There's no helping it. If Marnie doesn't succumb to this temptation, then she'll corrupt Stephen into fucking her own baby sister—and wouldn't that be even more twisted? But she's really not into that, and despite the magnificent memory of what Katie just did to her, Marnie finds herself unenthusiastic about the prospect of licking another girl's pussy.

She doesn't have to stay that way, though.

Closing her eyes, Marnie feels the power of the amulet rush through her … and just like that, she too is bisexual and incestuous. When she opens her eyes, she doesn't see her kid sister in front of her but instead a luscious, incredibly sexual woman with whom she has made out since they were "sleeping over" in each other's rooms as kids.

Katie reclines against the back of the couch, her body angled just slightly so that she can throw one leg up and over the back and let the other dangle down the edge. This leaves her tight, young pussy exposed. Marnie isn't surprised to see that she is completely hairless down there—a sudden, new memory of helping Katie shave her first time pops fully-formed into her head—and her lips are thin and bright pink, with just a hint of natural lubrication. The large mounds on her chest rise and fall with each slow, measured breath as her sister awaits Marnie's reciprocation.

There is no reason for hesitation any more: this is truly what Marnie wants now. She dispenses with foreplay and immediately dives in for the pussy. First she nuzzles her nose and mouth around Katie's crotch, inhaling her sister's sweet scent of arousal and teasing the sensitive skin in the entire area. Just as Katie makes several noises indicating her impatience, Marnie begins kissing her labia. Slowly. Chastely, almost. She runs her tongue up and down the folds, lifting and separating before letting them fall back into place. Katie's breaths become shorter and closer together as her arousal deepens, and her pussy starts to get wetter. Marnie casually laps up some of the juices as she moves her tongue in a lazy, circular motion, making her way over towards Katie's clit.

The sensation for Marnie is almost as weird as feeling Katie lick her pussy. On the one hand, this is the first time she has done this for her sister. This is the first time she has tasted (or, hell, smelled), her sister's cunt. This is the first time she has seen another woman's snatch in so much detail, the first time she has viewed let alone licked another clitoris. On the other hand, Uhazral's alteration of reality means that Marnie now has another set of memories in parallel to those. These memories include all the times she and Katie have made out. She even remembers the first time she told Stephen about her little ****, how he was cool about it, how she had let him watch and then fuck her while she licked Katie….

Marnie breaks off her actions and looks up at her sister's face. The new memories are becoming stronger, more numerous, with the older reality fading away. She suspects that, for everyone else, it is already nothing more than a dream or a hint of something forgotten; her role as the amulet's wearer provides a certain measure of protection—but even that is only temporary. After a little while longer, she too is going to accept this as the "new normal."

"Why'd you stop, sis?" Katie says, more curious than reproachful. She props herself up on her elbows, her tits jiggling and changing shape in response to the arching of her spine.

Marnie smiles. "No reason. You're just so hot, is all." And she crawls along Katie's body, kissing her navel, nipples, neck, until she reaches her sister's mouth. She sticks a finger into her sister's pussy while she clamps her mouth onto Katie's. They share a deep, passionate French kiss while Marnie further penetrates down below, her fingers becoming slick and sticky with Katie's juices. Marnie swallows Katie's moans as the two remain lip-locked. She uses her other hand to stroke her sister's hair and the side of her face. Finally, when they break the kiss, Marnie returns her attention to her sister's rack. She uses her free hand to squeeze both breast and nipple while tasting the other one.

"Ohhhh," Katie exclaims. "Fuck, Marnie, it's been too long since we did this."

The new-old memories are now coming in handy. Katie is getting more vocal, and Marnie can feel her tensing up, getting closer to a strong and satisfying orgasm. She responds to these signals. She withdraws her hand from Katie's pussy and slowly makes her way back down there with her mouth, returning once more to a thorough … inspection … of the clit and surrounding region. Katie stops saying something in mid-sentence, her vocabulary reduced to animalistic moans and whimpers as the neurons in her brain instead devote their energy to a massive release of endorphins. Katie's hand seizes hold of Marnie's hair, squeezes the crown of Marnie's head, as Katie's hips buck up against Marnie's face. Her sister's body trembles, and as Katie comes, Marnie enjoys a last, lingering taste of pussy juices before she sits up and enjoys the vision of Katie sinking into afterglow.

Katie's mouth has curved into a small, lazy smile. "Mmm, that was really good. We have to do this more often."

"Well, if you get a place nearby, that could happen," Marnie says.

Stephen—who, remember, has been cooking dinner in the kitchenette this entire time—now interjects. "Uh, two things. One, dinner is ready soon, so you two had better clean yourselves up—but Marn, not too much. I'm feeling a little left out over here. Two, Katie and I were talking about her needing a place to stay in town, and … well, maybe you should tell her, Katie."

Her sister shifts, moving across the couch to wrap her arms around Marnie and place her head on Marnie's chest. "Stephen was saying about you have that extra bedroom, the one you've been using for storage and stuff? But that you could probably do with taking on another roommate to help with rent? So … it’s kind of perfect, right? I mean, we enjoyed living together at home. But you and Stephen would totally have your own space to … like, do things." Katie grins; she has always been slightly jealous that Marnie has never let Stephen fuck her as well during their little threesomes. But one has to draw the line somewhere, right?

Or does she?

Uhazral is silent on the matter. No quips, no commands. Whatever it feeds on when it corrupts Marnie or another person seems to act like a sedative, lulling it into a quiescent state where it is either unable or unwilling to interact with the rest of the world. Marnie isn't sure how she knows this. She just seems to sense it. So this decision is entirely up to her—well, as entirely up to her as it can be after being under Uhazral's influence this afternoon.