NOTE: The protagonists of this story are foster siblings, not biological siblings. For me that is a neat way to side-step the more distasteful, biological aspects of incest stories; yet it still has a bit of that forbidden, titillating, taboo-appeal in terms of the emotional side of a brother-sister relationship – which I've tried to expound upon in this first chapter. Technically this story doesn't have to go in the 'incest/taboo' section, but it might cause offence if I post it elsewhere, so this is where it goes. For those who think going the 'foster siblings' route is a bit weak – a 'cop-out' is what it might be called in Australia – then feel free to go read one of the other millions of brother-on-sister stories here. Otherwise, read on and enjoy, with my thanks; I'm keen for any and all comments and messages, tell me what you think and if you're enjoying the story. I tend to need encouragement to keep these things going... thanks.
CHAPTER ONE – Adoptive brother and sister, resisting forbidden urges.
Shaun was adopted into Christine's family when he was only six months old, and 'Chris' barely three months older. Their parents had been close friends for a long time, so when Shaun's parents were killed in a car crash, his parents' will named Bill and Therese Cleary – Chris's parents – as their preferred guardians for Shaun. With no surviving grandparents and only a few aunties and uncles living overseas and never seen, Chris's family was the only family Shaun knew as he grew up, and so he was embraced as one of their own, and they were they only family he ever knew.
Bill and Therese sat the kids down after Shaun's tenth birthday, and explained that they were now old enough to know the truth. It hit Shaun fairly hard, as could be expected, but 'mum' and 'dad' were really good about it. They shared old pictures and stories of Shaun's biological parents, and told him what wonderful people they were and how much they loved him, and how sad everyone was when they died. They also told Shaun how it was an honour for them to be chosen to look after him, and – most importantly – how Bill and Therese loved Shaun very much and thought of him as a son of their own; this made accepting the news much easier for Shaun. Though Bill, Therese and Chris weren't his true father, mother and sister, to him they always had been, and he decided that they always would be.
Shaun and Chris had always got on like a normal brother and sister did: squabbling occasionally, but loving and supportive of each other, always standing up for and standing by the other if there was trouble at school. Upon learning that they were only brother and sister in spirit, nothing changed, they thought of themselves as brother and sister just as always. As they grew into their teens and the hormones started to kick in, it was perhaps only natural that their relationship became a little more physical; nothing overt, of course, taking the form of playful wrestling matches around bedtime, interspersed by the occasional straddle, grope or even the odd kiss – instigated by the both of them, driven only by natural curiosity and primal urges, fired perhaps by the subconscious realisation that there was no biological reason why they shouldn't fool around a little.
It didn't take long for their parents to sense what was going on, and it was near their sixteenth birthdays that they were sat down and given 'the talk': in a calm, rational and reasonable forum, it was explained that even though Chris and Shaun were not siblings in the biological context, their relationship was very much of brother-and-sister in the emotional sense; if they were ever to take things too far in a physical fashion, it would have a profound impact upon their relationship and the entire family and they would regret it forever. Shaun and Chris realised the gravity of the situation, and they swore and promised to their parents that they could see what they meant, and that they would never ever take their love into the physical, sexual realm – no matter how tempting it might become.
Having been tempered thusly, Shaun and Chris looked further afield for their sexual exploration and development. Shaun rapidly matured into a handsome young man and he became very popular with the ladies at school, trying his hand with increasing success amongst the beauties in more senior years and even rousing some interest amongst the younger ladies of the teaching staff. And Christine – widely regarded as one of the more beautiful girls in school – was more conservative and traditional in her quest for love than Shaun, going steady with a nice young lad of her own age by the name of Peter; she and Peter did not consummate their relationship though, settling instead for some very heavy petting behind closed doors. Their eighteenth birthdays came and went, and Chris and Shaun found themselves in the final weeks of their senior year at school, which is where our story begins proper.
*
Shaun wandered into the bathroom after breakfast, to find Chris in the shower. "Morning sis," he yawned.
"Hey bro," she replied, not pausing with the soap. It was often the way of their mornings; he ate a lot more than she did at breakfast, so she was usually first into the shower, but she didn't mind when he came in to brush his teeth while she bathed. They had always been very open about nudity while growing up, watching each other grow and develop in a fascinated, scientific kind of sense; they had even had a 'pubic race' at an earlier age, counting as their pubic hairs came in by their twos and threes and keeping a day-by-day tally. "Big day today?"
"Yeah, got an assessment in Physics after lunch," Shaun muttered. "Not looking forward to it. You?"
"Got a half-day today – gym class is off after Mr Roberts got zapped by the power point the other day, so I'm going home early."
"Uh huh," said Shaun, grinning around his toothbrush. "Ten bucks says you're bringing Peter home with you too." Chris rolled her eyes at him, which he took as a confirmation. "When the folks are away, Chris and Peter shall play..."
"Shut up," she suggested. "Not like you can talk, you man-whore. Which one of your mistresses are you planning on boinking today? Erin? Rohana? Or will it be the Lauren-and-Jenny tag-team again?"
"Hey: don't begrudge me my promiscuousness," said Shaun, breaking out the big words because he knew it annoyed her. "Don't hate me just because I'm not a moral prude and I'm not afraid to explore my sexual being – unlike some people we could mention."
"Are you making assumptions about your big sister, boy?" Chris asked, with a raised eyebrow.
"Not at all – I've heard that Peter's been talking," Shaun told her, pausing to spit and rinse. "He keeps whinging because he's 'not getting any'. Makes me want to punch him," he added, as he started slipping out of his bed clothes.
"Peter wouldn't talk like that," Chris told him, as she finished off in the shower and reached for her towel.
"You reckon?" said Shaun, now as naked as his sister. "I don't like him, Chris – you could do so much better."
"Yeah, well I don't like your little harem of hussies either," she replied, stepping out of the shower. "So that makes us even." She gave him a playful little slap on the arse as they passed each other by. "Nice bum," she appraised.
"Must run in the family," he winked, casting an eye over her own bare derriere as he stepped into the water; she waggled it cheekily at him as she left to get dressed.
*
"Dude: your sister is so hot," enthused Jarrod, as Shaun sat perched with his friends on a window sill upstairs in the maths building, overlooking the playground during recess; Jarrod boggled a little as Christine reclined in the sun, not knowing she was being watched.
"You are such a lucky prick, man," Brad added, his eyes also fixed on Shaun's sister.
Shaun sighed. "Don't you guys have anything else to talk about?" he asked. "Every time you see her, it's 'Chris is so hot! Pristine Christine! Blah blah blah, wank wank wank!'"
"But she is hot," said Jarrod, as a simple matter of fact. "And you get to see her in the shower, man! Every day!"
"I know this," Shaun shrugged. "You don't have to tell me – I already know it."
"But that's just so cool!" Jarrod went on. "Did you see her this morning?"
Shaun pulled a face. "Yes," he droned.
