Author's Note: Honestly I intended this story to be a one-shot, but people wanted more and I had a vague idea of what to write so I just went for it. I don't really know when the story could go from here, but if people wanted it I'm sure there's a few ideas floating around my head.

In response to some of the current reviews, a probably future reviews. The chances of me writing any other pairing are pretty slim. I'm just not a huge fan of many of the other sisters. I like Lori, Luan, and Lisa but I don't really have any ideas for them. Lucy is my favourite. Have you seen the way she sits? It's adorable! The chances of me writing something with Ronnie Anne is 0%.

Sorry for ranting. Enjoy the story. It has sex now.


Lucy awoke to the vague feeling that she was being stabbed in the hip. Opening her eyes to quickly survey her surroundings she realised that she had fallen asleep in her bother's arms. Now that she had a general idea of her situation she managed to connect the dots. She was currently being stabbed by Lincoln's erection. She felt her face become significantly warmer. Lucy was a smart girl. She understood plenty about human biology. She got aroused just as much as anybody else, so she decided she would help her poor brother out. Pressing herself against his growing penis she could feel the heat of the thing through the thin pants she had worn to bed. Starting with a slow pace she began rubbing herself against his growing bulge, gradually moving faster. She started feeling that tell-tale tingling between her legs, and a forceful urge for more speed and more pressure and more contact and just more of whatever she was doing. Noticing his breathing becoming laboured and small moans escaping from his mouth she leaned down to place a series of kisses down his neck before sinking her teeth into the flesh near his collarbone. She didn't break the flesh, but it would surely leave a mark. She pulled away when she heard a short gasp. Lincoln eyes were wide as he processed what was going on, but his hips had begun moving in time with her own. He pulled her toward him to meet her lips when they heard the very obvious sound of someone clearing their throat. They froze as they turned around to see an amused Lisa holding a giggling Lily in her arms.

"Good morning, temporary replacement parental units. Normally I would just use the term siblings, but with current relations the way they are this seems more fitting" Lisa said with a sly smile, her words somewhat breaking the tension in the room. "The infant requires a new diaper, and it seems I have a new study to work on. Lucy, would you kindly assist me." Still with bright red sweaty faces Lincoln silently and awkwardly picked Lily up and headed for the bathroom.

"So, what is this new study you're working on?" Lucy asked, trying to put the events that had just occurred behind them. Lisa removed a pen and pad from her pocket and started jotting things down.

Looking her sister dead in the eyes Lisa replied "The logistics of an incestuous relationship in a large family, and the effects such relationships have on the group as a whole." The tensions was back. "I'd like to ask you a few questions, if you don't mind. When did this relationship begin?"

"About 12 hours ago." A still shocked Lucy blurted out before covering her mouth with her hand.

"12 hours?!" Lisa yelled in shock. "I had her about the promiscuity of teenagers, but it really is a sight to behold." Lucy face only darkened further. After a moment she finally gathered the courage to address her most pressing concern.

"Before we go any further with this, judging by the fact that you know the word "incestuous" I'm sure you also know that this isn't quite normal."
"Yes, I'm aware." The bespectacled girls replied, looking as though someone has just explained to her that grass was green because of chlorophyll.

"Well I just wanted to make sure that you wouldn't tell anybody" Lucy said with a hopeful glance towards her sister. Finally understanding what she was getting at Lisa informed her that telling anyone would pretty much ruin her study, and if they ever needed help in their relationship she would be all too happy to oblige.

In the bathroom Lily had been changed as was wiggling around on the changing table while Lincoln inspected himself in the mirror. He ran his fingers along the teeth marks on his shoulder, the reminder of their actions once more fuelling the arousal that he was trying to abate.

"I guess that's something she's into" He said to himself with a laugh. "Maybe I'll return the favour next time." Before that they needed to actually talk about what was going on between them. And before that he should probably check on his sisters. As he made his way to the twins room his thoughts turned back to his closest sister. He'd been attracted to her for a while now. He knew it definitely wasn't normal, but that was the way her felt. He didn't like to admit it, but he was a teenage boy and the first night he started feeling like this was the first night he'd noticed that his sister had breasts. They were nowhere near on the level of his oldest sisters, but they were small and cute, and you had to really pay attention if you wanted to notice their grace, which was something he thought fitted her perfectly. One night she had come into his room to read to him and she was his cute little sister with amazing talent, the next night she was a beautiful girl who was on the path to becoming a woman and could craft words that drew out his emotions like no other had before. The switched had been flipped and no matter how hard he tried he couldn't flip it back. He once again felt immense relief that she hadn't murdered him the previous night when he kissed her. Suddenly remembering what Lisa had seen them doing he hoped she was handling it well.

Knocking on the door before opening it Lincoln walked into his younger sisters' room. Lola was sitting at her small table holding a tea party with her stuffed animals, while Lana seemed to be reenacting the event with her real animals. Lola would perform a series of grand movements and Lana would try and reenact it with one of her lizards, or frogs, or snakes which would make both of them laugh. He didn't want to disturb their fun but he knew that they needed food and he really wanted to make sure Lucy wasn't kinda freaking out. With the mention of french toast the pair shot out of the room like a rocket with their brother quickly chasing after them.

Lucy was kinda freaking out. She hadn't even officially started a relationship with her brother and they had already been discovered. Luckily, or perhaps unluckily, they had been discovered by Lisa. The young girl had a insatiable thirst for knowledge. If there was something out there that she didn't know about, but had the opportunity to learn about, then nothing was going to stop her. The intricacies of a consensual relationship between siblings was definitely not something you got to study everyday. Being able to observe all the interactions between the two and the rest of the family was more than enough to buy her silence. The question that remained, though, was whether their relationship was actually a thing. What did Lincoln really feel about her? Did he actually want some kind of relationship with her, especially now that it had been discovered. She continued to freak out.

Reaching the bottom of the stairs Lincoln looked over towards the sofa and noticed Lucy looking more pale than usual. She was definitely freaking out. Making sure the younger girls had gone into the kitchen, including Lisa, he placed Lily in her high and made his way to the sister that needed him right now. She jumped slightly when he dropped to his knees in front of her. Smiling gently he placed his hands on either side of her face and pressed his lips against hers for a moment. Lucy let out a happy sigh as he pulled away.

"Do you..." She started, trying to work up her nerve to ask. "Do you want us to be a thing?" Despite her vague wording he nodded his head with a smile.

"Of course I do" He said, "Do you?" She nodded too.

"We can never have children." He said sadly.

"I know."

"We can never actually get married."

"I know"

"Any kind of date we go on will be secretive, and in secluded places."

"Secretive and secluded are my middle names."

"I love you." Lincoln said, placing another small kiss on her lips.

"I love you, too." She replied, returning a kiss of her own.

Making their way to the kitchen together they were met with a series of complaints from the twins about having to wait for their food, as well as a knowing glance from Lisa. Lincoln went about cooking their breakfast while Lucy watched him happily. It might get difficult in the future but she wasn't going to let those thoughts tarnish the time she had now. After everyone had eaten the younger sisters made their way out of the room. Lisa had gone back to her room while Lana and Lola had taken Lily outside to go joyriding in Lola's miniature car. With Lucy and Lincoln alone in the kitchen the girl had offered to take care of the dishes. She had just begun when her brother came up behind her, wrapping his arms around her waist. She felt one of his hands begin to travel it's way up her body, his fingers gently caressing her along the way before cupping one of her breasts and gently brushing against the now protruding nipple. Lincoln began placing light kisses upon her neck.

"What about the girls?" She asked weakly, not really wanting his attention to stop.

"They're outside. We'll hear them come in through either of the doors." He punctuated his sentence with a slight pinch of nipple. His other hand was finding it's way to the waistband of her pants.

"And Lisa?"

"That doesn't matter."

"I never pegged you as the exhibitionist ty-" She was cut off by her own moan as Lincoln's hand dashed into her panties, brushing against her clit. Lincoln could feel the moisture on his fingers.

"I guess that action on the sofa wasn't enough for you." He whispered in her ear, causing her to shudder slightly. She was about to respond when she felt the air quickly leave her lungs as a finger was slipped into her pussy while a thumb steadily massaged the little nub. The speed of Lincoln's movements picked up slightly and she felt a second finger working it's into her entrance.

"LINCOLN!" A scream was heard outside. Definitely Lola. He thought about ignoring it and continuing until he heard the sounds of crying definitely coming from Lily. With a huff he removed his hands, running them under the tap to get them clean, and turned Lucy's face to give her a brief kiss.

"Sorry. It seems I have big brother duties to attend to." He said as he made his way to the door. She threw him a wink.

"Don't worry. A guy who treats his sisters well is very sexy. Trust me, I know."

His face still a little red he quickly ran over to his sisters, noticing their car on it's side.

"Are you guys okay?" He asked, a little panicky at the thought of his sisters being seriously injured.

"We're okay, but Lucy bumped her head." Lana replied. Quickly picking up the crying baby he began making soothing noises to try and distract her attention away from the injury.

"It's okay, it's just a little boo boo." He cooed. He gently rubbed the bump that was forming on forehead and kissed to cheeks and made faces to try and get her to smile. Eventually her cries died down and were replaced by cute little giggles. Lincoln look over at the two other girls who seemed to be on the verge of tears.

"Hey, Hey. It's okay now." He said as he wrapped his free arm around one twin and then the other squeezing them tightly. "I'm not mad at you guys or anything. I was just a little worried. You need to be more careful, okay?" They both nodded their heads. He placed a kiss on both their foreheads before standing up and righting their vehicle.

"I need to get some ice on Lily's bump, so you guys play safe." The pair hugged him before climbing back into the car and taking off at a much more manageable pace. Looking down at Lily's smiling face he smiled back before heading back into the house.

Lucy watched from the sofa as Lincoln gently rocked his baby sister is his arms while he grabbed some frozen vegetables from the freezer, wrapped them in a towel and delicately place them against her head. He walked over to join her. As soon as he was seated Lucy leaned her head against his shoulder taking one of his hands into her own while she took over vegetable holding duties.

"You really are the best big brother in the world" She said with a smile.

"I'm only doing what's natural. I love you guys." He replied with a shy smile of his own. "Don't tell anyone, but I love you the most." He added with a wink. Their short romantic moment was put on hold, however, when they heard Lisa start making her way downstairs. She sat herself down on the seat opposite them and pulled out her notepad once more.

"Judging by the position that I'm currently finding you in I think it's safe to assume that what I witnessed earlier was not just a hormone fueled case of teenagers experimenting, and that you intend to pursue a relationship together?" Lisa asked with her pen poised to take a record of anything worth noting. The young lovers looked to each other then back at their sister with a nod.

"Good." She replied. "That seems much more interesting to observe." She gave them both a reassuring smile before continuing her questioning. "I'm sure you guys have some idea of the short term arrangements you made need to make to continue this clandestine relationship. What about long term?"

"I haven't really thought about it." Lucy answered, looking towards her brother.

"We could both attend a college out of state. The same one, or at least in the same general vicinity. We'd rent a house explaining to our parents that it would be cheaper and safer for us to live together. After completing our studies we would enter the workforce in the city we had moved to, deciding that we were going to keep living together out of convenience. If asked about it we could easily make up romantic relationships that would eventually lead nowhere." Looking over at Lucy he saw her staring with mouth agape.

"What?" He asked, "I like to plan." Lucy was secretly thrilled that he had put so much thought into their future together. Lisa had finished taking her notes when she spoke up again.

"Try not to react to strongly, but I need to ask this for research purposes. Have you ever felt these kind of romantic or sexual feelings about any of your other sisters?" Lucy eyes widened at Lisa's question. She was a little nervous to hear the answer. Lincoln was much calmer.

"No, I haven't. Try not to get upset, but Lucy has always been my favourite sister."

"I see. I am a little miffed at the clear bias present here, but seeing the actions required to claim that position I think I can let it go." She replied with a smirk. This drew a laugh out of Lincoln. Lucy let out a quiet sigh of relief, noticing this he put his arm around her shoulder and pulled her close to kiss her on the temple. Lisa stood up, pocketed her pen and pad, and started towards the stairs.

"That's all for now." She said as she left. "Should I have any other inquiries I shall seek you out."

The rest of the day passed peacefully. Lisa continued yesterdays work in developing stronger plants. Lola and Lana continued their never ending cycle of playing together, arguing, doing their own separate things, making up, then playing together again. Lincoln and Lucy watched television, cuddling Lily between them. It was now late into the night and the others had been put to bed. The young lovers had finally found themselves alone again with the heat from earlier in the day coming back to the forefront of their minds. Sweet little kisses had become more passionate. Their tongues were dancing around each others mouths as their hands roamed freely across still-clothed skin. Moving forward on their desires. Lincoln's grasped the hem of Lucy shirt and pulled it off in one swift motion. She hadn't felt the need to wear a bra. Her hands quickly came up to cover herself. She still felt a little self-conscious of her skinny body, pale skin, and small breasts. Sensing this Lincoln placed his hands over her own and leaned down to kiss her deeply.

"You're the most beautiful woman I've ever laid eyes on." He whispered in her ear. Hearing these words from him she happily relented and allowed him to pin her hands to his bed. He took a moment to take in the sight before him. The intensity and hunger in his gaze caused her to blush and look away before he leaned down to kiss her one more. He then turned his attention lower. Gliding his tongue down her chest, he took one of her nipples into his mouth, teasing it a little before biting it gently. He moved over to do the same to the other one as Lucy tried her best to stifle her moans.

After a short time the were both laying naked on Lincoln's bed. He was straddling her with a condom in his hand.

"Are you sure you wanna do this?" He asked her, searching her face for any sign that they should stop. She took the rubber from him and tore it open with her teeth.

"I'm just as turned on as you are. I'm sure you can feel it." She replied with a wink. "I love you, and I want to be with you. I definitely want to do this." Not waiting for his response she took his throbbing penis into her hands and began stroking gently. She marvelled at the heat it was giving off. Slowly she placed the condom atop his head and rolled it down to the base of his shaft. Laying back down on her back she spread her legs wide and began to rub her pussy invitingly. Seeing no need for any more conversation he positioned his cock against her entrance. He brought his hands up to move her hair out of her face, briefly losing himself in the brightness of her eyes. He caught her mouth with his own as he slowly pressed into her. Her moan was stifled by his kiss. She supposed he was average size, but inside her it felt like he was filling her completely. The tightness surrounding him began to abate and she gave him a nod to signal that he could start moving.

Lincoln started thrusting slowly at first but began picking up the pace to fuel the burning fire that was their lust. At least, that was what he was trying to do. It felt nice, but he couldn't really feel much but the rubber of the condom. Lucy's moans had also seemed to lose their fervour.

"Are you- uh, are you really feeling anything?" He asked with a trace of worry in his voice.

"I think the condom is killing most of the sensitivity." She replied. With a sigh he pulled himself out of her and sat on the edge of the bed. He threw the condom in the trash. Noticing his frustration she wrapped her arms around his waist and took his penis into her hands again.

"There are things just as fun as sex." She said into his ear. Slowly at first she started stroking his cock. Picking up her speed she pressed her mouth to his neck then licked his earlobe before giving it a gentle nibble. While one of her hands continued it's movements the other started roaming over his body. The feeling of her hands all over him and her naked body pressed against his back was too much for him. When she felt his cock start to twitch she quickly sunk her teeth into the base of his neck. He came more forcefully than he ever had before. The first blast shooting halfway across the room. She made sure the rest were aimed better. As the wave of exhaustion hit him he fell to the side and lay on his back on the bed. Staring at him Lucy started licking her fingers clean of the cum that had shot into hands.

"Not too bad" She critiqued with a smile. "As expected of the man I love." She tried to lay down next to him and cuddle when he sat up once more. The confusion was clear on her face.

"You haven't had your turn yet." He said with a wink.

Lucy really didn't expect to be laying naked with her brother's head between her legs tonight, but she was really glad that it was happening. Lincoln was giving her a few tentative licks while she moaned lightly.

"You don't taste so bad yourself." He said with a smirk before going back to his work. He gently ran his tongue over her clit and outer lips enjoying the shudders and moans his movements drew out of her. As he pushed his tongue inside her she let out a squeal that was far louder than either of them intended. He pulled away from her with a wicked grin on his face.

"This is payback for the biting" He stated as he stuffed Lucy's own panties into her mouth. She let out a muffled huff and gave him a look that told him to get back to work. Laughing lightly he started to kiss her neck once again, moving down to gently bite the skin around her collarbone. The dulled moans and panting had a very attractive allure to it. Lincoln positioned himself between he legs again and set his tongue to work trying his best to draw out the moans and shudders as much as he could. After teasing her for a moment longer he rubbed her lips before roughly pushing two fingers inside her. He was rewarded with a beautiful silenced squeal. Moving his fingers swiftly, he started thrusting into her. His larger hands reaching places she'd never been before. Places she never knew felt so good. After what felt like hours of his fingers penetrating her and his tongue assaulting her clitoris she screamed his name as loud as she could through the dulling fabric between her teeth. Her whole body spasmed and all her muscles contracted as Lincoln brought her through the most intense orgasm of her life. Slumping down onto the bed she panted heavily as he pulled her panties out of her mouth and kissed her in the afterglow. They could taste themselves on each others tongues. Looking at the damp fabric in his hands he turned to her.

"I'm keeping these." He said with a laugh. Lucy reached down and grasped his still hard and aching cock.

"I'm keeping this." She said as he wrapped his arms around her as they fell into a deep and restful sleep.

The next morning Lincoln had made his way into Lisa's room.

"I need you to make me infertile." He stated simply. She looked at him for a moment before rummaging through one of her drawers and pulling out a large pair of scissors. His hands immediately shot to his groin in self-defence.

"No! No way. I mean temporarily. Like some kind of chemical or something. Something reversible." She let out a mock annoyed huff before smiling at him.

"I'll see what I can do." She said, making her way over to her lab equipment.

"Thanks Lis, you're the best." He said as he made his way out of the room.

"Please let me be second best." She replied with a chuckle as she set to work to help out her favourite brother.