Lemon, mature audiences only!

Growing up in a tree is tough. Small living quarters mean sharing a bedroom with your annoying little sister, something Brother Bear is familiar with. This morning was like any other, the bear siblings awoke at the call of the Mockingbird that nested outside their window. Almost in unison they turned and hung their legs over the edge of the bed. Being a bunk bed, Sister Bear's feet ended up in Brother Bear's face. Normally this bugged Brother Bear, but today he felt different, he wasn't bugged at all, in fact, he was quite content at the sight of Sister Bear's small, soft feet. "Cute..." Brother Bear mumbled, still half asleep, "Huh? Did you say something?" Sister Bear piped up. "I-I said… get your dopey feet outta' my face." Brother replied, "You always say that." Sister remarked, before climbing down the ladder. She skipped the final rung with a joyful hop, landing primly in front of Brother Bear. Sister Bear's arm lifted gently to the sky, her back arched, and her stance widened as she groaned softly, stretching her whole body. Brother Bear gazed at this display, normally he thought it was excessive, but he strangely enjoyed it today. "What are you looking at?" Sister growled, she had caught Brother staring, "Uh… your standing in my way!" Brother growled back, before quickly standing and rushing out of the room. "Somebody woke up on the wrong side of the den." Sister Bear huffed, before leaving the room herself.

Brother Bear trudged down the stairs, staring at the floor. "Good morning sport!" Papa Bear greeted, "Mama made pancakes." he said cheerfully. "Mhh… pancakes." Brother Bear said lifting his head. Brother, no longer dwelling on the events that transpired earlier, sat down at his spot at the table. Sister Bear soon hopped down the stairs, skipping every other step, "Pancakes!" she shouted, before sitting down next to Brother. "Here you go!" Mama Bear said turning to the table with a platter stacked high with pancakes. Papa Bear serves a cake to each of the family members, giving himself a large stack. "Where's the syrup?" Sister asks glancing around the table, "Right here, dear." Mama says pointing at a bottle next to Brothers plate. "Thanks Mama!" Sister shouts, leaning across Brother Bear, placing a hand on his thigh to brace herself. "O-oh gosh!" Brother remarks glancing down at Sisters hand, "Sister! Mind your manners!" Papa Bear growls, "Oh, sorry." Sister remarks hastily, pouring the syrup on her food. Brother Bear sit in silence as his family eats their breakfast, "Finish your breakfast, Brother." Mama commands, "I-I'm not hungry." Brother Bear replies, pushing his plate away. "I'll take that off your hands." Papa says chuckling to himself, before dragging the plate across the table.

Brother Bear sighs and returns to his room to get ready for school, "What the heck is going on with me?" he mumbles to himself as he enter the room. Brother Bear Picks out an outfit for school, and begins to strip off his pajamas. As he pulls off his shirt the door swings open to reveal Sister Bear, "What are you doing?" Brother remarks, "I need to get changed too." Sister Bear replies, rolling her eyes. She begins to stripping off her clothing, tossing her shirt lazily into the nearby laundry hamper. Brother Bear can't help but stare, Sister's small breasts are just starting to come in. Her pink nipples are perky and can be seen poking at her shirt, something Brother is just now noticing. Sister pulls her pants down to her ankles, exposing her panties, the soft white cotton hugging her shapely behind. "Hurry up, or you'll be late!" Mama Bear shouts, snapping Brother Bear out of his trance. Realizing he's only half dressed, he quickly finishes the job. The cubs rush down the stairs together, meeting their mother at the door, "Here are your backpack's, have a good day." she smiles sweetly before kiss each on the forehead and waving them out the door.

Sister Bear marches happily down the road, whistling a tune to herself. Brother Bear follows behind, his eyes planted firmly on the ground. Brother's head is like a scratched record, playing the scene in their bedroom on repeat. "Hey! Watch where you're going!" Sister Bear shouts, in his lusty haze Brother didn't notice Sister stop at the crosswalk, causing him to bump into her. "You've been acting weird all morning!" Sister growls angrily, "S-sorry, you just keep… distracting me!" Brother responds sheepishly. Sister Bear rolls her eyes and continues on, no longer whistling, the rest of the walk remains silent.

Once the bears reach the schoolhouse, they part ways and head for their respective classrooms. Brother Bear slumps into his desk with a heavy sigh. "What's up?" a voice asks Brother, glancing around Brother Bear identifies the voice as Barry Bruin's, who is staring intently at him. "Nothing..." Brother responds, "That's not true! You're a worse liar than Lizzy!" Barry jokes. Brother pauses for a moment, but thinks Barry might be the perfect person to ask for advice, after all, he has Lizzy around all the time. "Um… Barry? Has Lizzy ever made you feel… different?" Brother asks shyly, "Oh sure. Siblings make you feel a whole bunch of different stuff. Sometimes you like them, other times you want to kick 'em!" Barry responds, chuckling. "Not like that… Has she ever made you feel… good?" Brother Bear chokes out, "Yeah! As much of a pain Liz can be sometimes, she never hesitates to help cheer me up." Barry says, patting Brother on the shoulder. "Oh… okay, thanks." Brother Bear isn't satisfied with that answer, but he feels a little less weird. As class continues Brother Bear's thoughts start to wonder, he see's visions of Sister Bear lying in his bed, moaning his name. "Oh… Brother Bear… Brother Bear-" "Brother Bear!" His teacher's voice suddenly cuts in, making Brother jump. The class erupts in laughter, making Brother Bear blush a deep red. "Settle down class! Brother Bear, please pay attention to the lesson. Now can anyone tell me about Oedipus?" the teacher says, continuing the lesson. Brother Bear's attention wavers throughout the day, but he luckily avoids any more embarrassment. The end of day bell finally rings and the class files out the door, with Brother Bear slowly following behind. Sister Bear and Lizzy are waiting outside the school, giggling to each other. Brother Bear stands by the door watching the girls, they hug each other before Lizzy leaves with Barry. "So… cute." Brother says under his breath. His head fills with images of the girls, their embrace turning into wondering hands. The girls lean into each other, their lips touch in a soft embrace. "Brother Bear, let's go!" Sister Bear shouts, "W-What? Oh… yeah." Brother Bear responds, disappointment clear in his voice.

The Bears walk home in silence, not even a glance is exchanged between the siblings. As they approached their tree Sister Bear's eyes light up, "Do you smell that? Mom made cookies!" she announces. "Come on!" her hand shoots down and grabs Brother's, pulling hard, she begins to run. "Whoa!" Brother Bear yelps as he stumbles forward. The cubs make it up the front steps in record time, Sister throws the door open and finally releases Brothers hand. "Oh, you kids are here. I made-" "Cookies!" Sister Bear interrupts Mama's greeting. Brother Bear, still panting, makes his way into the kitchen, his eyes widen at the tray of still warm cookies. "Wow, thanks mom!" Brother Bear says cheerfully taking a cookie for himself. "Why don't you have two? Since you didn't eat anything for breakfast, you must be starving." Mama Bear smiles. Brother Bear reaches for another cookie, "That's not fair! He gets a second one for NOT eating!" Sister Bear shouts angrily. "He's been acting weird all day, and you reward him!?" Sister says, stomping around. "Just this morning he was staring-" "Here, why don't we split it?" Brother Bear quickly interrupts, pulling the cookie in two. "Thanks!" Sister says cheerfully, before taking her half and heading into the living room. "Oh my! Just look at the time. Your father will be home any minute and I haven't even started dinner!" Mama Bear blurts out quickly. "Brother, go play with Sister while I get started in here." Brother Bear complies with his mothers request and heads into the living room.

Sister Bear was lying on the floor watching television, "Mom said I had to play a game with you." Brother Bear said as he entered the room. "I wanna watch T.V." Sister whined, "Ugh… fine. What are we watching?" Brother Bear groaned, sitting on the couch. Sister Bear began to ramble on about the cartoon she's watching. Brother wasn't paying much attention to what she was saying, instead, he was looking at Sister Bear's body. Sister's tight pants showed off her shapely behind, and her lying position gave Brother Bear a great view. Brother reclined back on the couch, resting his eyes square on Sister Bear's ass. Every time something exciting happened in the show, Sister would squirm around happily, shaking her butt in the process. Brother almost didn't notice Papa Bear entering the door, but Sister Bear jumped up to greet him. "Mama's making dinner!" Sister said cheerfully, "It's almost done dear." Mama Bear piped up from inside the kitchen. Papa entered the kitchen and hugged Mama Bear from behind, kissing her on the cheek, "Oh dear! Not in front of the children." Mama giggled. "Eww!" Sister Bear groaned, sticking out her tongue in disgust. Brother Bear couldn't take his eyes off the scene, he imagined taking his Sister in his arms. "Ahem!" Mama Bear announced loudly, "You three go wait sit at the table, dinner will be done in just a moment." she continues stepping away from Papa Bear's embrace, still blushing and smiling to herself.

The family sits down for a nice dinner. They all share stories about their day. Papa tell of his coworkers getting into trouble with their boss, Sister talks about what she learned today, Mama shares a funny anecdote from book club. Then it was Brother Bear time to share, "Uhh… nothing much happened today." Brother mumbled, looking down. "Well, you know what they say. No news is good news!" Papa Bear said chuckling. The rest of the meal went uneventfully, "Okay kids, its getting late, you better get ready for bed." Mama Bear insists. "But Moooom!" The kids whine in unison, "No buts! You have school tomorrow." Papa Bear growls. The cubs bow their heads and head to the bathroom. Sister and Brother start to brush their teeth, the nightly ritual beginning normally. Sister Bear leans towards the mirror opening her mouth to inspect her teeth, sticking her tongue out to gauge its cleanliness. The white suds dripping from her mouth, "D-don't do that!" Brother stutters out. "Why? Does it bother you?" Sister teases, continuing her inspection. "It's… distracting." Brother Bear grumbles, Sister Bear rolls her eyes and finally spits out the suds, "Fine, whatever." Sister sighed, leaving Brother alone in the bathroom.

When Brother Bear entered their bedroom, Sister Bear was lying in her bunk, the lights were off except for a small night light. Brother quietly walked to his bunk. He was too disheartened to even bother with his pajamas, instead, he stripped to his briefs and climbed under his blanket. Brother Bear was only laying down for a few minutes before he began to toss and turn. Normally the cubs fell asleep quickly, but Brother was restless. He began to reminisce over the events that happened earlier today. He though about Sister, her perky breasts, plump ass, and all the cute little things she does. Brother Bear felt strange sensation, his underwear got tighter and tighter, and he felt is penis begin to swell. The pink head began to emerge from it's sheath, Brother pulled off his underwear exposing his cock. He reached down and began to gently rub the tip, clear, sticky fluid started leaking from the opening. "Mmm..." Brother Bear moaned softly. As his penis grew larger, his hand stroked down the shaft, with each stroke, his cock pulsed, pumping out more fluid. "Oh gosh…" Brother groaned in pleasure. Now fully erect, his penis felt weighty in his hands, with this, Brother realized something. In gym class, some of the other boys would point at him and note at how big he was. Brother Bear was never the tallest bear, so he assumed they were talking about his, admittedly chubby, belly. This always made Brother Bear a little sad, but he now understands they were talking about the assets below his belly. Brother stroked along the full length of his shaft, basking in the newfound confidence. "Yeah, that's it." he gasped, stroking faster. Mama always said Papa was a big bear, and Brother took after his father in that area.

"What are you doing?" a voice called out quietly. In his excitement, Brother Bear had forgotten about Sister. She sleepily hung her head over the edge of the bed. Brother Bear scrambled to hide his erection, but his attempts were futile. "Hey, don't hide stuff from me!" Sister Bear grumbled, as she began to descend from her bunk. "W-wait! Don't come down!" Brother begged, but that didn't stop her. "Nice try mister! I want to play with that toy too!" Sister growled as she reached for the covers. "No… Stop!" Brother Bear shouted in vain. In one swift motion Sister Bear ripped the blanket off of Brother, allowing his penis to spring upwards. "Aaah! What is that!" Sister shrieked, "Shhh!" Brother Bear growled, covering Sisters mouth. "It's my… penis." Brother said sheepishly. Sister Bear was confused, they had bathed together when they were younger, but Brother's thing had never looked like this. "Why is it so… big? She asked shyly, pointing at it. Brother Bear hesitated for a moment, than he admitted, "You're the reason. You made me feel good." "That feels good?" Sister said, raising an eyebrow. "Yeah, it feels really good." Brother replied. Sister Bear's eyes lit up, "That's why you've been acting so weird." she shouts in realization. Brother Bear began to apologize, he felt bad for his attitude, but he was interrupted by the feeling of a hand suddenly grasping his penis. "What are you doing!" Brother shouts in surprise. "You said I made you feel good, and that your… penis, felt good. So I'm… touching it." Sister Bear says nervously. Their inexperience is obvious, Sister's hand was still and her grip was tight. "Umm, you need to move your hand." Brother instructs, "Oh… okay." Sister replies, loosening her grip. Her hand slides gently down the shaft, causing Brother Bear to moan. "W-what's wrong?" Sister Bear panics, "I'm fine, it feels really… good." Brother reassures. Sister Bear swallows nervously before dragging her hand up, milking out a drop of precum. The bears may be young, but instincts are something you're born with. Seeing the light glint off the fluid sends her body into overdrive. Her tongue lashes at the precum, licking it up. Brother Bear gasps sharply, opening his eyes, he sees Sister savoring the taste. "What was that?" Brother asks, still surprised. Sister Bear stops, not immediately realizing what she had done, she looks at Brother nervously, "S-sorry..." she says, looking away, "No… do that again." Brother Bear requests. Sister's face brightens up, as she leans closer to his cock. She begins to flick her tongue on the tip of Brothers penis, while her hands simultaneously stroke up and down his shaft. As soon as a drop of precum pulses out of the opening it's quickly licked up by her tongue, "It's like licking a lollipop!" Sister Bear giggles. Brother Bear is too busy moaning and panting to respond, his heavy testicles tighten up. "I f-feel something… coming!" Brother groans, his hips bucking into the air. Sister's mouth is wrapped around the tip sucking lightly while continuing to stroke Brother's shaft in rhythm with his thrusts. "Ghaaah!" Brother Bear roars as a stream of cum shoots into the back of Sister Bears throat. Sister gags slightly from the impact, but begins to swallow the fluid as it pours out from his cock. "Oh s-shit!" Brother growls, his climax subsiding, "That was amazing." he continues, sighing to himself. Sister Bear coughs, as excess cum dribbles from her mouth, "You jerk!" she shouts, "I could have drowned!" "Oh, geez. Are you okay?" Brother says, concerned. "No… I'm not okay!" Sister insists, "Whats wrong?" Brother Bear asks, his concern growing. "I… feel good d-down here too." Sister Bear replies, pointing to her genitals. Sister had gotten more and more excited, but choking on cum made her feel incredibly good. "Now you have to… make me do that." she says, motioning towards Brother Bear's still leaking cock. Brother Bear bit his lip, everything he had been wanting today, was finally coming true. He stands up and walks behind Sister Bear, he pulls her close into a tight embrace, his cock resting against her plump ass. "W-what are you doing?" Sister shouts in surprise, Brother Bear shushes her and begins to kiss her neck. "Oh… my." Sister Bear begins to moan. Brother slides his hands up her shirt, dragging them up her soft and slightly chubby belly and onto her pert breasts, "Mmm..." Sister moans, gasping with every kiss Brother Bear places on her neck. Brother grins deviously before pinching Sister's perky nipples, "Yes!" she moans loudly. Sister Bear turns to face Brother, their eyes close as they lean into a deep kiss. As they pull away, a string of saliva drips from their lips, causing both to giggle. "N-now down here." Sister says shyly spreading her legs. Brother Bear nods in agreement, before tracing his hands down her young, gentle curves. His hands grab the bottom of her shirt and the waistband of her pants. Sister Bear begins to breath heavy in anticipation. Quickly, Brother pulls his hands apart exposing Sister's breast and pussy, causing her to gasp. "Shit..." Brother Bear says, taking in the sight. Sister Bear's pussy is glistening in the light, a string of juice is connecting to her panties. Sister Bear is trembling gently, "P-please… make me feel good." she whimpers. Brother drops to his knees, he licks along her tight slit. Sister gasps and moans as her thighs shake more violently. Brother Bear reaches through her legs and firmly grabs her soft ass, bracing her as she quivers. Brother's tongue focuses on Sister's swelling clit, each pass causes fluid to gush out. "O-oh god! I… feel something coming!" Sister Bear moans, grinding against Brother's tongue. As Sister's climax approaches, Brother Bear begins to suck on her clit, causing her to tremble violently. "H-holy shit!" Sister Bear shrieks, throwing her head back. Sister's hips buck wildly as her whole body is rocked by her first orgasm. She nearly collapses into Brother's arms, breathing heavily.

As Sister Bear regains her senses she feels a something hitting her butt. She glances down, Brother Bear's cock is hard again, tapping her ass with each throb. "Ready for round two?" Brother asks, looking Sister in the eyes. Sister Bear nods silently, stumbling to her feet. Brother follows behind, pulling off Sister's clothes as they make their way to his bed. Sister Bear lays back on Brother's bed, spreading her legs to expose her pussy. Brother Bear climbs on top of Sister, placing his hands just above her shoulders. He grinds his cock gently on Sister Bear's pussy, coating it in juices. They look deeply into each others eyes, before leaning into another kiss. Brother lines his penis up to Sister's opening, pushing gently, "Do it… I want it." Sister Bear moans. Brother nods and begins to slowly push his penis into her pussy, "F-fuck." Brother Bear groans as his penis plunges deep into the tight opening. "Oww… T-that hurts." Sister whines, "Take i-it out." she continues. Brother starts to pull out, the flared head catching on every ridge and fold, "Ahh… so good." Brother Bear moans. Sister Bear wraps her arms around Brother, clenching her teeth in an attempt to hold back tears. Brother Bear's large size would have been tough on any girl his age, even some older girls, but for a small cub like Sister, it was brutally tight. Every throb of Brother's cock sent shocks up Sister's body, initially she only felt pain, but soon pleasure began to radiate from deep within. As Brother's cock pulled out of Sister's pussy, he began to apologize profusely. "S-stop… do it again." Sister Bear interrupted, "But you said it hurt." Brother Bear said, confused. "Yeah, i-it hurt, but… It feels so… GOOD." Sister growled, pulling Brother close. He hesitates, he doesn't want to hurt her, but the tight grip she has on him is all the confirmation he needs. Brother Bear slowly plunged his cock back into Sister's pussy, Sister Bear gasps sharply in both pleasure and pain. Brother continues to push deep inside, his cock ending just short of Sister Bears cervix. The cubs lock eyes, Sister has tears falling down her cheeks, but is moaning in pleasure. Brother Bear fears he is hurting Sister Bear, and begins to pull out again. Sister Bear's moans turn to gasps as the swollen head pulls on her insides. "Yes… j-just like that!" she growls, Brother Bear slowly withdraws his penis until just the head remains. "Are you really okay with this?" Brother asks, unsure of himself. Sister Bear looks at him, silently hesitating, before pulling him close and whispering in his ear, "Take me." Like a switch being flipped, those word send Brother Bear wild. He begins to pump his dick in and out of Sister's tight slit. Long, slow, noisy thrusts the whole length of his impressive cock. Each pump causes Sister Bear to tremble with pleasure. Her pain begins to fade, allowing her to loosen up. Brother notices this lack of resistance and begins to fuck her faster, his balls slapping against her with every thrust. "Yes… oh god, yes!" Sister Bear moans, her pussy throbbing in time with each pump. She feels that familiar sensation, she's going to cum again. Sister holds onto Brother Bear with her arms and legs, this only causes him to pound harder, ramming his full length in and out at high speed. Sister Bear's pussy constricts hard onto Brother's cock, "Aaahh!" Sister screams, gasping and struggling to regain control. "W-Aah! Wait! Sl-Oh-w down!" Sister Bear pleads. Brother Bear is far too horny to listen to her, his pounding only speeds up. Sister can't think as thrust after thrust plunges deep into her pussy. "A-again! I feel it again!" Sister shouts, another climax screaming form release. Brother's fucking in deep, short thrusts, his hips moving incredibly fast. Sister Bear doesn't get a moment of respite before he's balls deep inside of her again. Every muscle in Sister's body contracts, her arms and legs wrap so tightly around Brother Bear that he's locked deep inside her, his tip millimeters from her cervix. Sister Bear's jaw closes tightly on Brother's shoulder. The pain mixes with the pleasure and they both roar in orgasmic pleasure. Cum explodes from Brother Bear's cock, shooting deep into Sister's womb. Sister Bear's pussy gushes out juices, both her own and Brother's, her body convulsing with each powerful jet of semen pumped into her body. Once their shared orgasms final stop, the cubs collapse on top of each other, passing out from exhaustion.

The Mockingbird calls early the next morning. The bear's wake up in a daze. Brother Bear Lifts himself off Sister Bear, turning and hanging his legs off the side of his bed. Sister Bear followed suit, sitting next to him. The two sit still in silence for a moment, "I have to pee." Sister finally spouts off, standing up in front of Brother. Her arm's lift gently to the sky, her back arches, and her stance widens as she groaned, stretching her whole body. Brother Bear just watched, as Sister picked up her pajamas, bending provocatively, and slipped them on before heading to the bathroom. Brother Bear looked at the clock, and noticed the time, the Mockingbird had woken them up early. He looked out the window and noticed something he never saw before, there were two Mockingbirds, huddled around two eggs. Brother Bear chuckled to himself, before picking up his clothes and heading out of their room.