[Fiction] Brother Dearest (Sibling Incest Fantasy Roleplay)

[Marquise]

This is actually a roleplay thread being acted out by me and Aros. In pink, it will be my character's (Abigail) perspective. In blue, it's his character's (Theo) perspective. I've tidied it up a bit to make it flow better and I'll be updating every so often.
That being said, I hope you all like it!

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I unlock the front door and stroll inside, happy to have gotten home after a long school day. The house is silent, with my parents being out to work and my brother away on college and only arriving later that day to spend the weekend home.

I rush upstairs to my room and change out of my dark green uniform and into a light pink summer dress and undo my ponytail, letting my curly long brown hair fall down my back. I'm about to text my friend when I hear a faint moan coming from the next room.

I freeze, scared at the thought of a intruder in my house. Gathering my courage, I take my phone and tip-toe to my brother's room.
"He might have arrived earlier", I think, trying to soothe myself. But ever since he moved away to college, he always get home late Friday night, never so early in the afternoon.

The door is closed but unlocked and I push it open slowly, peeking inside to check for a intruder. I hear another moan and my head snaps in its direction. It's coming from the adjacent bathroom. The bathroom door was left ajar and when I peek inside, instead of finding an intruder as I had feared, I find my brother, hand around his cock, sitting on the toilet and stroking himself. His eyes are closed and he doesn't notice me.

Thinking fast, I open my camera and snap a picture of him. It's too good of an opportunity to pass. Once it's done, I open fully the door, the noise causing his eyes to snap open, wide with horror of having been caught in such compromising position by me.

"Theo! What are you doing?", I exclaim with fake horror as I stand in the dooraway, arms crossed under my boobs, pushing them up and making them seem bigger.

The day ends faster than expected. Which's excellent news as I didn't want to have to drive home during rush hours.
Luckily, a teacher was absent today, earning me a free afternoon with the house all to myself. I plug in my earphones and start the drive home.

When I finally get to my family house, it's empty as expected. Abby should be in classes for at least the next few hours, and my parents are going to back late as usual. Since the start of the week, it has been impossible to find time for myself. In particular, to satisfy my libido. Which tends to show up often, especially when I'm sitting near girls in class. While I put up a serious and respectful facade, the truth is that I have a dirty mind. Especially when it comes to women's bodies.

But now, I don't need to worry about it, this afternoon will give some time to relax. Not wanting to waste a moment, I hurry to go to the bathroom. Checking my phone in search for some naughty content, I open my photo gallery, which luckily no one ever stumbled upon, as I keep it without password protection. "Note to self: fix that". I would hate for them to find the many pictures I've taken of my classmates, and even some of my own sister. It's only sexy summer clothes, swimsuits or nightwear, nothing seriously problematic. But still, I'd prefer it not to found.

I start to undress myself and stroke my cock softly as I look through my picture collection. As it starts to get hard on my hands, I change to a porn video, the earphones I still had in carrying the dirty sounds straight to my ear. I undress entirely, take down my pants and underwear, and sit on the toilet.
I continue to stroke my hard cock and start to think about the girl next to me in Chemistry classes, Emily. She has red hairs, brown eyes and a fit body. I've checked her cleavage once today. I didn't get any nipples, too bad.
But how they look like? The porn video starts to be more interesting... And I start to imagine seeing more of my classmate naked body. I picture myself touching her skin and sucking on her boobs.
For a moment, the pleasure was incredible, Emily in front of me, naked. The sound of the porn video of a girl masturbating herself acts as Emily's moan in my fantasy, and I find myself starting to moan. I try ot keep quiet, even being alone, I hate making loud noises. The girl moans even stronger in my ears. "Mmm, Emily rub this pussy for me". I start to increase the stroking speed, squeezing my jaw, taking my pleasure...

Suddenly, I feel a big air current and hear a voice, very familiar and dangerously close. Abigail stands in the bathroom doorway, looking at me with horror and asking what I was doing.

My first reaction is to take off earphones and act like my phone doesn't exist at all by intentionally putting in inside the sink with a awkward throw. My second instinct is to fastily grab my pants and put it above my cock to hide it.
"Fuck...I'm fucked... what can I say now. Let's try to keep calm", I tell myself. But it doesn't work at all, and when I speak, my voice is very shaky.
"What are you do-doing here?", I shoot back at her, avoiding answering her question, as it's too embarrassing to say that I was masturbating.

I look down at my feet, too embarrassed and fearful to look Abby in the face. My gaze starts towards my cock, to see if my pants cover it enough. But my hard cock can be seen poke through the fabric. But I'm paralyzed, waiting her reaction.
As the silence continues, my gaze moves to check my sister's face, but my eyes find themselves unable to move past her breasts. There were bigger than usual, being pushed upwards by her folded arms. I observe her breasts for a few seconds, which should make me look like a real pervert in her mind, and I squeeze my cock tighter.

This is when I realize I'm still grabbing my warm cock with my right hand, and, given the stress, I had unintentionally squeezed it harder, giving me a little pleasure in this such embarrassing situation. Much less than stroking of course, but still a little...

Then I finally move to see her face, to fight the gaze of my sister.
"Please Ab-Abi, can this... e-event staying between us?"

A wicked smile spread on my lips as the words leave his mouth. My gaze is fixed in his huge cock, his hand wrapped tightly around it. I had been so focused on taking a picture to use later that I hadn't stop to admire how good looking Theo was. I can feel his eyes on my chest and for a moment whether he was masturbating on the thought of me. Surprisingly, I find the idea to be exciting and feel a pool of warmth on my insides.

He raises an eyebrow, waiting for my response and I realize I've been quiet for too long. Regaining my composure, I show the screen of my phone to him, letting him see the photo I took.
"Can it stay between us? I guess that's up to you, Theo", I say, pursing my lips as he stares at the picture. "Don't even try to take my phone, it does automatic backup to the cloud." Its a lie, my phone doesn't do that, but that's not something he needs to know. "You could destroy my device but the picture is now forever mine. And, if you want me to keep it to myself.... you are going to be very nice and do as I say. Won't you?"

I'm starting to be afraid of her. Firstly, she took a long time to observe my cock, which in itself is very embarrassing. But now I know she has a picture of me and I don't really know what I should feel. I'm very horny and lost. It's not just a little voyeur pic... it shows so much of my naked body. I can't lie and minimize it, she has the upper hand right now.

I do not yet know what she expects from me, but I know that she can't show that picture to anyone. "Not everything is bad Theo, I'm going to have to do his chores for a while, nothing serious." But I don't really know what's in her mind, and her satisfying smile doesn't reassure me.

I try to focus on fixing what I can right now and manage to cover entirely my cock, so she stops looking at it.
"Abi, please, keep the pic for yourself. What do you want me to do? And if I do, will you delete the pic?" I can't bring myself to look her in the eye as I beg, hoping that she will listen to my pleas.

For the first time ever, I've the upper hand in this relationship. After years of him teasing me, making fun of me and simply humiliating me (in school, at home, when I was hanging out with my friends... it didn't matter, he always loved embarrassing me) I now had something he'd die for.
"Here's how this is gonna go, T. You will be my obedient slave for a month and then I'll delete it. Or I can just post it on instagram to all of your friends to see. I bet... what's her name again?" I try to recall the girl he's always talking about. "Emily! I bet Emily would love to see this pic."
I look him straight in the eyes, taking joy in holding his future in my hands. "You can start by kneeling in front of me and kissing my feet. Swear that you will be my slave and do as I say. Also, from now on, no more 'Abi', 'sis' or 'little one'. You'll call me 'My Queen' and adress me with respect. Understood?"

I'm stunned for a second.
"No way! Not Emily!" I'm exclaim as soon as I regain my voice.
Obedient, slave, kissing feet, now and naked... I see the real side of my sister now. She wants to humiliate me and take her revenge. And sadly, I'm not in a position to negotiate. I'm helpless, my only way to get out of this nightmare, was to please her.

"Alright, you win..., I will if you hold our promise too, just a month", I tell her, desperation and sadness flooding my expression. I keep my pants covering my cock, go on my knees.
"I swear ..to-to be Your slave this month, I will do what you say", I say with a little hesitation.
Then, I start to approach her feet to kiss them.
Fuck, I'm scared, what is demon's gonna make me do next?

As he kneels in front of me and bow to kiss my feet, I can feel my panties getting wet. "Stop", I tell myself. "He's Theo... My brother! I'm just getting my revenge. This is not sexual." But even as I think that, I know I'm lying to myself. I can feel my fluid leaking onto my panties, which only intensifies when his lips brush my skin, causing me to shiver.

"Perfect", I say with a giggle. "Now, slave, you will do my chores. You can start with the laundry. Mom had told me to have it done by the time she got home, but now it's your problem." I pivot on my heels, heading out of the bathroom, then I turn back and add, almost as a second thought. "And since you enjoy being home naked, you'll do the washing in the way you are." I tell him as the pull the pants out of his hands. "Don't worry, Mom and Dad always call when they are almost home. I'll let you know when they ring."

I leave him there in the bathroom, stopping at the doorway of his room to remove my soaked panties and leave them there for him to find. "Might as well start the washing with those", I think, before rushing to my own room. Once there, I lock the door, making sure to not commit the same mistake as he did and jump on the bed. I bring his pants to my nose, inhaling his masculine scent. They are still wet from his pre-cum and I find myself wanting to hump against it.

My pink dress fall to the floor in a swift move and I bring his fabric to my folds, rubbing myself on the wet patch. It feels exhilarating. Wrong and exciting. I hump faster, the rough denim brushing against my clit in just the way. I partially hope he can hear me. There's nothing he can do about it, the photo makes sure that I'm in control. "The photo...", I remember and pick up my phone, opening the gallery and zooming into his cock. "Damn, his head is so huge. I can imagine the stretch it would give me." The though of him laying in bed, tied up to the headpost while I fuck him is enough to drive me over the edge and I find myself cumming in a record time, my juices mingling with his own.

I unlock the door just a bit, throw the pants to the hallway and scream. "Extra laundry up here!", before slamming the door shut once more and getting a tissue to clean myself. I can already tell I'll be having a lot of fun with Theo. More fun than we ever had before.

She leaves me naked and with her chores to do. My horny mind come back immediately and my cock was still hard. But I have to focus on her chores first then, I will make this cock cum so hard that it'll make up for the interruption.

The fact that she caught me, that she saw me naked, that she now controls me... It starts to arouse me a lot, making me even hornier. Will she include her friends? Have I to do all her chores nude? And mines? And what if I have to washing the car, mowing the lawn, hang out the washing outdoor or at window, cleaning her bedroom, in front of her naked, and probably with a hard cock. I'm standing in the bathroom, stroking my cock again and imagining all these scenes...

Fuck, stop dude. End the chores first, before our parents come back. Then go cum and think of something else.

As I head out of my room I find her panties on the ground, soaked. My sister is pantieless now... wearing nothing under her dress. A fact that does not help me to calm my horny mind. I pick it up, and gather the rest of the dirty clothes to star the washing.

My cock stay hard during the whole time. I feels so naughty and free to do it naked. I want to stroke, to touch and rub it. But I don't want. The fear of getting caught with my dripping cock is too big for me to attempt such thing. Even if I'm horny. I don't want Abby to notice that I'm aroused to do chores naked. Well, it will be difficult to hide it if she comes down stairs as my dick is such hard thing that it's impossible not to notice.

"Extra laundry up here!", she yells from her room.

"Ah, what do she wants again."
I climb up the stairs and there, in front of her bedroom, I find my pants, completely soaked. Is too much for my mind.
The thought of my sister cumming from seeing (and now owning me) naked. She is so naughty... What she gonna do with me? Questions come flowing through my mind again.
I want to explode. I'm naked, standing in front of my sister's bedroom door. And yet, I start to stroke softly, and breathe the minimum as I can as to not make much noise.
I take my pants and use to deposit my semens, each stroke faster and faster and filling more of my pants.

Will Abby ask me to stroke in front of her? Will she ask me to take or pose for other nudes? "Why I am such horny. Sister... you scare me, and you arouse me..." My cock blows into my soaked pants. Then, I calm down, continuing to stroke a bit to take the last instants of pleasure, but once it's done and my hornyess is gone, I start to regret my actions. "Fuck... what I do."

I hear him outside. Heavy breathing and panting that can only mean one thing. "Maybe I'm not the only depraved one in this house", I think.
The rest of the afternoon goes by eventless. I hear him around the house, but I ignore it. The thought of having him agonizing over what I'll do next arouses me so much that I can barely focus on my homework.
Around five, Mom texts saying that she and Dad are headed home and, after making sure I'm presentable, I open the door. "Slaveeee", I scream, dragging the 'e' in a sing song, "Mom and Dad are coming. You better have finished the laundry!"

My afternoon was calm after I cummed. I placed all the laundry in the machine and turned it on before heading back to my room, to do my homework and try to not think about all this naughty story. I end up disobeying my sister and put underpants as soon as I get to my bedroom. More to keep me from touching my cock than anything else.

A little before five o'clock the machine was finished. I take off my underpants and leave my room to hang up the laundry, naked, just in case she decided to check on me. She doesn't. I'm almost done when I hear my sister, telling me that the parents are coming back.
"Nearly finished...", I scream back, not caring to add 'My queen' as she wants to me.

I go back to my bedroom and put on some decent clothes. The chore was done and my parents are soon arriving home. I think about avoiding my sister the rest of the day, hoping that she will forget about all of this by tomorrow. But the closer I get to her bedroom, the more obviousily my hard cock becomes. And this is when I realize that this game is far from over.