Monique is the best person in Natalie’s life. She’s like her best friend. They tell each other everything, encourage and assert each other to accomplish goals, pick each other up after break ups, etc. They’re inseparable and she loves her to death.

But there’s just two things about Natalie that Monique doesn’t know. And she doesn’t know if she’ll ever tell her. Not only is one of them completely weird and would probably severely sever their relationship, but the other one would just completely end it. She doesn’t wanna take the risks.

The first being that over time, she’s grown fond of Monique. So much so that that fondness turned into developing strong feelings for her. She knows it’s wrong and she shouldn’t have these feelings for her own sister, but just knowing that just makes it that much better to her. Normally, she’s able to keep it under control, but as she gets older and older, it’s proving to become more and more difficult. Especially since they live with each other now.

The second secret is just something that Natalie fears would ensure that Monique just cuts her out of her life forever. In her eyes, not only is it extremely weird, it’s just plain unnatural. And it’s the fact that she has a penis. She was born with it and it’s always been a bit of a burden for her. Not only with the morning wood rain, but relationships have been proven to be impossible to maintain. When they would get to the point of where both were ready for sex, the end result would always be the same: disgust in her additional appendage and leaving. Not only did this take massive tolls on her self confidence, but it made her completely give up on romance. She figures if five people can’t handle it, especially with two of them being two of the kindest people she’s ever met, she’s just meant to be alone. And if Monique reacted the same way, it would just destroy her. So she won’t let that happen.

But try as she might, it proves to be quite the challenge for her. Especially when they play games like they used to. Like water fights. Whether it be water balloons, spraying each other after washing hands, or just random instances of gathering water in their palms and throwing them on each other, it was a fun time all around. The problem is with both girls getting older, Monique is developing more and more. And with water completely drenching her shirt, it becomes that much more apparent. And whenever she gets an eyeful of her sister’s gorgeous figure, she suddenly has to use the bathroom or get back to work in her room. And while this would work in the beginning, Monique’s starting to piece together the pattern and getting suspicious.

Natalie types away at her laptop in the living room, conversing to a client of hers that doesn’t realize that $50 a story means $50 a story. Monique walks downstairs, noticing Natalie’s growing frustration. She doesn’t want her to blow a fuse, so she decides to cheer her up a bit. She plops down next to her, saying,

“Hey, Nat. What’s up?”

“Nothing much,” Natalie responds, “Just mentioning for the hundredth time to this dumbass that $25 for a story isn’t gonna cut it.”

“Sounds fun.”

“Yup. Having a blast over here. Oh, here’s another one. Oh, the wonders of freelance writing. Wee.”

“All the fun at the fair.”

“You couldn’t even fathom.”

“Well, while the look on your face and demeanor just scream euphoria, I can’t shake the feeling that you really aren’t having fun.”

“Oh, you’re crazy.”

“Maybe, but it’s just a feeling I’ve got. And I wouldn’t be able to live with myself if that feeling was correct and I could do something about it.”

She slowly lifts her hand, extending a finger. But Natalie is too invested in the stupidity of her customer to notice.

“And there’s one thing that always brings a smile to your face whether you like it or not,” she continues, bringing her hand to Natalie’s side, gently poking it, causing her to lightly jump, “And I think you know what it is.”

“No,” Natalie says in apprehension as she scoots away, “Don’t you dare.”

Monique scoots towards her, giving a sinister grin. Natalie tries to stand to flee, but Monique’s too fast. She pounces onto Natalie, making her fall back onto the couch as she tickles her rib cage relentlessly. Natalie roars out in laughter, pleading for her to stop as Monique unleashes her assault. She maneuvers her fingers from her ribs, to her armpits, to her neck, to her stomach, revisiting the areas randomly.

Natalie tries to turn the tables, but Monique has always been more dominant than her. Meaning once she’s got, she’s practically stuck until Monique says otherwise. But that doesn’t deter Natalie. She tries in any possible way to at most, switch the position, and at least, stop the tickling.

Natalie makes attempts to tickle her back, but Monique’s been at it for so long that she barely has the energy, let alone the wherewithal, to compete with her tickles. She then attempts to grab her wrists, but Monique’s too quick. She can’t even manage to enclose her hands on her arms.

While Natalie tries to end Monique’s attacks, she can’t help but to take a moment to realize her position: lying on her back, Monique on top of her, straddling her, and touching her entire body. She then feels herself getting a little excited. So she needs to try even harder to stop this before Monique notices her excitement, too.

Monique’s barrage of tickle continues along with Natalie’s constant attempts to stop her. That is until Natalie makes the wrong move. Monique goes for her armpits again, but Natalie accidentally slaps her wrist in an attempt to catch it. This causes Monique’s hand to move onto her breast. The laughing stops. So does the tickling. Both women pause and take a moment to process what exactly is going on. Once it clicks, Monique swiftly snatches her hand back, saying,

“I’m sorry. I-I didn’t mean to ... It just- I mean- I was trying to- uh ... It was...”

“It’s ... It’s fine,” Natalie responds, stopping Monique from sputtering, “It’s ok. Accidents happen.”

“O-okay ... good.”

Monique then gets off of her and sits on the couch. Natalie sits up. Not a sound is made. Awkwardness ensues with every second. That is until Natalie’s laptop rings again and she thanks her lucky stars. She stands up and picks it up and says,

“I should ... You know ... Probably ... I guess ... Uh, kinda...”

“Yeah,” Monique replies, “Yeah, you should ... uh ... do the ... the thing.”

“Yeah, the thing.”

“Yeah.”

“Yeah.”

Silence.

“Kay bye,” Natalie finally says before hastily making her way upstairs.

Once she’s gone, Monique decides to get her mind off of what just happened with some mindless entertainment. She looks down next to her for the remote, only to find that it’s not there.

‘Odd,’ she thinks to herself, ‘I could’ve sworn I felt it between us.’

Natalie makes it to her room, shutting the door and tossing the laptop onto her bed, taking in what just happened. She slumps onto her bed with a deep sigh as the events replay in her head. She then lays down as the replay continues. When she does, she feels her dick practically trying to burst through her shorts. She sighs in annoyance before unbuttoning them and sliding them off, freeing her cock.

‘Well, it’s gonna be quite the challenge working with this, isn’t it?’ she thinks to herself, bringing her hand to her shaft, ‘Ok, might as well take care of it.’

She starts slowly moving her hand up and down her length, letting out soft moans in the process. As she slowly strokes her cock, the image of Monique straddling her reenters her mind. This turns her on even more. She starts stroking a little faster, imagining Monique riding her. She arches her back and lets out a light moan. But she catches herself and bites her lower lip to stifle her moans, not wanting to be too loud.

As she continues, her mental image gets more and more vivid, turning her on more and more. It almost seems like Monique is actually there, riding her dick, moaning out her name, touching her like she did before. Natalie is in pure bliss with her created scenario, almost forgetting it’s her imagination. Her moans get a little louder and her strokes get harder and faster.

A knock is heard on her door, snapping Natalie out of her thoughts. She immediately gets under her covers, propping her knees up to hide her erection.

“It’s open,” she calls out. The door opens and Monique appears.

“Hey,” she says, stopping herself as the full picture unfolds before her. In front of her is her sister, slightly out of breath, under the covers, her laptop that looks to be carelessly tossed, tissues on her nightstand, the cover slowly setting as if she’d just draped herself with it, then when it settles, she sees a bit of a tint between her legs. She chuckles before saying,

“You never did know the meaning of subtlety, did you? Well, I was just gonna ask if you’ve seen the downstairs remote, but I can see you’re ... preoccupied. So I’ll let you get back to it. Oh, and if you’ve got one to spare, could you lend it to me some time?

She winks and Natalie sticks her tongue out at her, trying her best to hide her fear of getting caught, embarrassment from the request, frustration from the interruption, and ... growing arousal? They share a chuckle after Natalie’s reaction and Monique takes her leave. Natalie lets out a sigh of relief as Monique’s footsteps are heard going down the hallway to what sounded like her own room. After the coast is clear, she removes her cover and continues stroking herself.

As she returns to her actions, trying to reenter her previous thought back into her mind, she finds herself envisioning the interruption and it’s giving a more favorable result. This is turning her on more than the thought of Monique riding her. Is it because of the rush of almost getting caught, or is it because she secretly wanted to get caught?

She gets back to her pace, back to her stifled moans, but to a different vision. She then reaches under her shirt, grabbing a hold of her right breast with her free hand, the same breast that Monique touched, grabbing and kneading it as she continues sliding her other hand up and down the length of her cock.

Eventually, she feels her orgasm building. By this point, it’s getting harder and harder to maintain her silent moans. So much so that her moans turn into squeaks. She gets the wherewithal to at least do something about the up coming mess and grabs the tissue box with her free hand, pulling out a few sheets and covering them over the head of her member. A few strokes later, she closes her mouth shut, attempting to be as quiet as possible as she lets out a final moan as she shoots her load into the tissues. She throws her head back as rope after rope shoots into the layer of tissues. But the amount coming out is proving to be too much as her cum starts oozing out of the concealer. Seeing this, she grabs a few more sheets of tissues and wipes the excess cum running down her cock.