*
At the same moment that Thorfinn is having this low-key crisis, in a university town several hundred miles away, his younger sister is lying in her bed in the small student house she shares with several friends. She is naked, on her back with her legs spread apart. Her current boyfriend, Vincent, is on top of her. He is fucking her. She is not enjoying it.
Today is Aurora's nineteenth birthday. She has been celebrating it all day, on-and-off, with various different people. She had a birthday breakfast with her housemates, lunch in town with her visiting mother, and then several hours of drinking with Vincent, moving from bar to bar along with a rapidly changing gaggle of friends, before finally heading home for birthday sex.
So here they are, having sex. Or rather, Aurora is lying there, letting Vincent have sex with her. She feels his cock sliding rhythmically in and out of her. It's mechanical and almost completely pleasureless. He grunts with every thrust and slobbers into her neck; maybe that's him trying to kiss her. He is sweating much more than he should, considering how little effort he's putting in.
Vincent is normally okay in bed - very occasionally, he's even good - but not tonight. Maybe due to alcohol, or tiredness, or just because he's selfish and impatient, he has decided to give Aurora the most mediocre missionary fucking of her young life. No foreplay. No cunnilingus. Barely even a few kisses before he stuck his cock into her. Aurora is very unimpressed.
She and Vincent aren't the only couple currently fucking in the house. Her housemate Louisa is in the bedroom next door, apparently getting eaten out by her girlfriend Natalie. Louisa is a very noisy girl. Her moans of pleasure are almost deafening through the thin wall, screaming and swearing and crying Natalie's name. Aurora wishes that she was in there with them. She's (unofficially) bisexual, but right now she is wondering if she should just become a lesbian.
Since the sex is so unstimulating, Aurora is noticing the various other sensations in her body. She is reasonably drunk, and has a slightly dry mouth. Her feet ache from hours walking around town and standing at bars. Her calves hurt from a tennis match she played two days ago (she narrowly lost, and is still annoyed at herself about it). She has a bruise on her right side just below her ribs - she's not sure where she got it. And, since she's been drinking all night and last urinated about two hours ago, her bladder is extremely full. She really should have relieved herself before letting Vincent fuck her.
She has been having misgivings about their relationship for a while now. Vincent is much older than her (he'll be twenty-six next year), and he drew her in with his air of older-guy worldliness. He's handsome enough, and fun to drink with. Her friends like him. But beneath his vaguely charming exterior, there is very little actual personality. He talks almost exclusively about himself. He can be affectionate, but usually only when he wants sex. He constantly makes fun of her for being a country girl (he says she's a "farmer's daughter" - her father is an architect). He repeats the same jokes over and over until she wants to strangle him. They have been together three months. She doubts she will put up with him for much longer.
Aurora rests her chin on Vincent's bony shoulder, so that she doesn't have to see his face, and grits her teeth in frustration. Her aching bladder is getting harder to ignore. Through the wall, she hears Louisa squeal with pleasure at something Natalie is doing. She tries to imagine she is being fucked by somebody else. Somebody better.
She thinks of the various guys and girls she has slept with. Depressingly, most of them - most of the men, anyway - were not much better in bed than Vincent. The girls were usually more fun, at least for a while. But genuinely good sex has been remarkably rare in Aurora's life thus far. This frustrates her. She is a beautiful girl; she is no narcissist, but she knows this, in the same prosaic way that she knows she has dark-blonde hair and type-A-negative blood. She turns heads and attracts catcalls on every night out. She's even done a little part-time modelling (tennis wear, naturally). It feels unfair that she can't find herself a decent lover.
As her ordeal goes on, Aurora's mind wanders to a favourite subject of hers: imagining what her older brother would be like in bed. Big, strong, handsome Thorfinn, who has appeared in her most secret fantasies so many times. She knows it's wrong for her to want sex with her own brother. She supposes it's a sign of undiagnosed mental illness (certainly, her easily-alarmed mother would say so). Well, maybe it's the kind of mental illness that could be cured by a good fucking.
Vincent groans on top of her, jolting her out of her thoughts. He has just come. He looks down at her triumphantly, as if he's achieved something great. He is clearly quite drunk, his eyes swimming around under their drooping lids. Aurora almost cringes, but instead she lets him kiss her. She's still pretty drunk herself, but not nearly drunk enough.
One thing Vincent does have going for him is that he recovers fast. There's never too long a wait before he's ready to fuck again. After a few minutes of awkward cuddling, he reaches down to thumb his newly hard penis back into Aurora's vagina. He does this without asking her, or even saying a word. He just grins at her and begins to thrust again, grunting loudly. If anything, it is even less pleasurable the second time around. Its main effect is to make Aurora's overfull bladder twinge uncomfortably.
Aurora closes her eyes and wishes that it was Thorfinn fucking her. Instead of Vincent's skinny body pressing down on top of her, it should be Thorfinn's tall, leanly powerful frame. Instead of Vincent's shock of untidy dark hair tickling her cheek, Thorfinn's neat sandy blond fade. And instead of Vincent's barely-average dick...
Back home, Aurora shares a bathroom with her brother, and she is totally at ease going topless and peeing in front of him. In fact, she makes a point of doing it as often as possible. Thorfinn isn't quite as casual as her, but he still has no problem pissing with her in the room, so she has seen his cock multiple times. And what a magnificent cock it is. He's hung like a bull elephant, bigger soft than most guys are fully hard. Aurora has no idea if her pussy could handle something that size, but she'd gladly find out.
She often wonders whether she is actually in love with Thorfinn, or just infatuated with him. She has never admitted her feelings for him, of course, but she thinks he must have some idea. She strongly suspects that he wants her, too. Sometimes when they are together he gives her strange, furtive, lustful looks, though he quickly glances away if she looks him in the eye. She regularly fantasises about going to his bedroom late one night, naked, and slipping into bed with him. She once had a frightening, confusing dream of Thorfinn forcing himself on her - a frightening, confusing dream that still makes her disgracefully wet just thinking about it.
The fucking (if it can even be called fucking) carries on, with no end in sight. With each of Vincent's sluggish thrusts into her pussy, Aurora curses herself more for dating him. She sighs quietly and wonders how much longer this will last.
Through the wall, Louisa and Natalie are still making plenty of noise.
*
While taking care of his frustrated hard-on, Thorfinn manages not to think of his sister. As he slowly, contemplatively jacks his erect shaft with his closed fist, rolling his foreskin back and forth over the thick drooling head, he successfully keeps Aurora out of mind. He doesn't think about her beautiful smile, her dazzling blue-green eyes, her silky blonde hair, her long delectable legs. He certainly doesn't imagine pushing those legs far apart and forcing his cock into the sweet young slit hidden between them.
Nor does he think of her as he builds towards his climax. He pictures another girl, a fuck buddy he had in his first year of university - Lilian. Those are some good memories. Where Marzena turned out to be all talk, Lilian was a real size queen. She loved to have her pussy filled up to breaking point. She was a major squirter (he loves squirters), and she moaned and swore like a sailor every time they fucked. It's her wide-eyed orgasm face he's thinking about when he ejaculates.
It is only some minutes later, when Thorfinn is swaying tipsily in front of the toilet, pissing like a racehorse, that thoughts of incest begin to plague him again. The sound of piss trickling into the toilet bowl suddenly reminds him of Aurora, and how casual she is about peeing in front of him. Their sibling relationship is so comfortable, so unselfconscious, that it is just part of their morning routine at home. Thorfinn might be brushing his teeth, or towelling off after a shower, and Aurora will come in (often topless) and engage in some friendly chitchat while she relieves her bladder. And, since she always drinks plenty of water, she pisses prodigiously, not quietly tinkling but gushing like a river in flood. It's weirdly arousing to listen to.
The mental image of Aurora, naked and peeing like a champion with a smile on her lovely face, has an inevitable effect on Thorfinn's still-pissing cock. A growing erection chokes off his stream. He grunts in discomfort as he awkwardly forces his urine out of the huge, disobedient organ. Tonight, the damn thing has been significantly more trouble than it's worth.
The semi-erection refuses to go away, despite his best efforts; it swishes in front of him like a sword as he wanders unclothed around the apartment. He realises he will not be able to just turn in for the night. He has sex on the brain. Right now he would literally screw any woman in reach. It's lucky that Aurora is so far away, because she would be first on his list.
