See other submission for Alicia/Jules back story. This isn’t intended to be a serial, just exploiting a real situation; although details have been changed.
Alicia is going out with some friends today and is up and about at 6:30, she has her breakfast and her shower, and all the time Jules is watching her from the bed. He is playing with himself as he watches her, she knows that because she can see his hand moving surreptitiously under the duvet, although he thinks that she can’t see anything. He believes that if she had seen something she would say so, but he doesn’t know his sister as well as he thinks he does. In fact she is quite turned on by the fact that he is looking at her and getting horny, and the knowledge that he will wait until she leaves to make himself cum makes her feel a little pleasant sexual jealousy. She thinks about it in the shower, and is going to masturbate herself while she is in there but decides to give her brother something to think about instead and she knows that she will be better at that if she is still horny.
Normally she would put her underwear on in the bathroom, but today she “forgets” her underwear, and has to leave the bathroom with her towel wrapped around herself, secured with one corner tucked in over her breasts. The towel is not very wide, and her movements while she is putting on her make-up and doing the breakfast washing-up give Jules plenty of opportunity to glimpse her bare thighs and to appreciate that she is completely naked under the towel. He lays in bed massaging his cock; he is edging for a lot of the time and little drops of spunk keep emerging and rolling down the shaft and onto his fingers, making a hot sticky mess that somehow excites him even more. He knows that when he finally does cum there will be loads of it.
At one point his sister undoes the towel in order to secure it properly; she has her back to him but she spreads her arms wide and he glimpses her nakedness in the mirror on the wardrobe door, maybe she leaves herself exposed just slightly longer than necessary and his eyes feast on her full breasts, her round tummy, and the neatly trimmed patch of dark pubic hair. Then she lifts the towel up under her armpits, exposing the tops of her thighs where her buttocks swell, oh how he wants to spread those buttocks apart and see the neat little anus and the lips of her vulva! Oh, how often he has thought of burying his face in her quim when he is wanking! He is a virgin and has no real idea of how a woman is down there, but he can smell traces of her occasionally when they are in bed together and the rich dark scent of her arouses him every time until he can imagine her taste on his lips and his cock is straining against his pyjama trousers, the knowledge that he is aroused and she is so close fuelling his incestuous lust.
Now she ties the towel tightly again, covering herself up, but he has plenty of material now for his orgasm later. His hand is barely moving on his cock, but Alicia can see he is aroused by the look on his face, his eyelids are heavy and his eyes soft and dreamy, and occasionally a spasm crosses his face. Alicia knows it is his orgasm face, or at least a mild version of it, and that he is responding to a throb of pleasure that has gripped his body. She is enjoying the sight of his pleasure so much now and her own body is responding, her skin feels so sensitive to touch now, the movement of her towel on her body causes tantalisingly pleasant feelings, she thinks of gentle kisses on her bare skin. Her vagina clenches occasionally and she feels her lubricant being squeezed out as it clenches; concerned that she will soon have it running down her thighs she goes into the bathroom to sort herself out and to dress, wiping herself her finger lingers on her clitoris to give her a little release but she decides against cumming because she is running late and anyway she has another plan that she will enjoy much more than a quick orgasm in the bathroom.
Her legs are shaking and her hands trembling, palms hot and sweating as she makes her final preparations to leave. She is wearing her usual leggings and a loose t-shirt, the weather is warm outside. Her pretty feet are tied into sandals that show off her round toes nicely. She packs her bag and picks up her keys and sits on the bed beside her brother. Bending, she kisses him softly in his lips, the unexpected kiss, like that of a lover, thrilling him almost to orgasm but he manages to control himself.
“Enjoy yourself” she says, and reaching into her bag she pulls out a packet of tissues. “You’ll need these” she adds.
Jules knows exactly what she is talking about and is embarrassed and confused. How does she know what he had been doing under the duvet? He has been so discrete. How long has she known? In the end he splutters out “what do I need those for?” rather unconvincingly, aware that he is reddening. Alicia says nothing, just smiles, and to his horror grasps the corner of the duvet and peels it back to reveal his cock, rigid and glistening with the drops of cum that had been oozing out. He is holding it between his thumb and forefinger, minimizing the stimulation in order to postpone his orgasm.
“I’ll tell you what” she says, “you get a tissue out and I will help you with that”, this last said whilst she nods her head towards his erection. He is confused again, he can scarcely believe what he is hearing. Is his sister going to make him cum? Stupidly he follows her instruction and takes a tissue out of the packet, feeling his cock yearning with anticipation, throbbing as her hand approaches his shaft. She grips it firmly but lightly and starts to masturbate him. She is so turned on by her brother’s pleasure, her body feels as though it is on fire and she knows that she will spend the next few hours in a sexual trance. She rubs slowly, feeling him stiffen and throb under her touch, his scrotum is tight in preparation for ejaculation, his eyes are rolling in his head; his mouth is open as he approaches orgasm.
Then suddenly he is cumming, great thick jets of spunk squirting out over his pyjama jacket and the bedclothes and Alicia’s hand. Alicia herself feels a release, not quite an orgasm but her body feels light and tingly as she listens to his gasps of pleasure, and her pudenda pulsates as she feels his powerful muscles pumping his fluid from his genitals. At last he is spent, laying in a heap of post-orgasmic bliss, his perineum occasionally twitching with aftershocks.
“How was that?” Alicia asks, squeezing his softening cock gently.
“God it was so nice. You are really good at that.”
She smiles and bends to kiss him again, her hair brushing his face as her lips meet his. “Well, come on, you need to clean yourself up” she says. Her fingers are covered in his spunk and she licks off the worst of it, enjoying the texture. Eventually she stands, her legs trembling as she walks to the door. “See you later” she says. When the door closes behind her Jules thinks about what has just happened and starts to play with himself again, he wants his sister so much now and he lets his mind run wild with the possibilities until he cums again. But now Alicia is with her friends, her sexual arousal in the background of her day as they chatter and drink coffee. She thinks about her brother occasionally, a delicious little thrill passing through her as she remembers his face as he was cumming.
Source: reddit.com/r/eroticstories/comments/48wx9f/friday_morning_incestnsfw
More please!