My Great Big Brother- Merry Christmas To You.

Story by ArcticWolf451 on SoFurry

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Disclaimer: Don't read this if you are underage, meaning if you are under 18 SHOO! NOW. And I know you aren't gonna listen because I did the same thing when I was 16. Sigh, so just make sure you lock the damn door so your parents don't catch you, a'ight? All characters are mine. Also, this story contains Incest in it. For the record, I don't condone it and sure as hell don't recommend it. So listen up kiddies and don't try to bang your sis. Got it? If not, your ass is grass and your dad's foot is a lawn mower. Oh, and any copyrighted names I used belong to their respective owners and I was not paid to use them. Go Steelers! And also Go Gators even though I don't go to that school. =) ********** December 24th, 3:50 P.M. EST, Altamont Springs, Florida Kyle sat and stared at the floor with his paws together, fingers interlaced. It was Christmas Eve, and that meant the whole family went to Joan Holland's church for the four o'clock Christmas Eve service. And as usual, St. Mary Catherine's Catholic Church was packed full of regular members and tourists as the clock ticked down to the start of the service. Everyone was talking, as it was boring just sitting there. Some people, including Kyle's family, had been there since 3:00 P.M., having arrived early in order to get a good seat. Kyle wasn't paying much attention to the furs around him though. For one thing, he didn't care about the service that much because he wasn't Catholic; he was Anglican. However, his primary reason for a lack of focus was that he was lost deep in thought. The previous night he had started to wonder what was going to happen to him for mating his sister. He remembered back to when his sister first asked him to mate with her. He had been reluctant to do so, but that hadn't stopped him. Kyle knew that he deeply loved Katie, but he also knew that by showing his love for her he might have ended up condemning them both. At the moment, he was considering what might happen if he broke it off with Katie and repented. However, Kyle knew that if he did break it off, Katie would be crushed. Even before he had mated her he had been unable to stand seeing her feel sad. He could only imagine how bad he'd feel if he broke her heart.

'I'm trapped between two versions of Hell,' he thought to himself. 'If I stay with her, I'll roast for all eternity. If I break it off, I'll feel guilty for hurting her for all eternity. What in the heck am I supposed to do?' he mentally asked himself. He jumped slightly as he felt a paw rest on his wrist. He looked over to the right to see Katie giving him a gentle smile and consoling look.

"Kyle, are you okay? You seem worried about something," she said.

"I...I'm okay."

"You don't look okay. Come on, I know something's wrong."

Kyle smiled and looked into Katie's eyes. He could see she cared for him and was honestly concerned. That made his decision all the more difficult. He felt a slight pang in his chest as he wondered what he should say to her. Kyle continued looking into her eyes. They were so soft, so sweet and gentle; a perfect reflection of her personality. Kyle unclasped his paws and cracked his knuckles. He then smiled at Katie and said, "I'll talk about it with you later, right now it's not safe, okay?"

Katie nodded and rested her paws in her lap. She knew something was up, and the fact that they couldn't talk about now meant that it might be serious. However, she trusted that it would all work out in the end. Just then the church service finally started and the congregation stood up as the processional music began. Kyle wasn't following the service though; he was simply mimicking the actions of the furs around him. He was still lost deep in thought as he pondered how to address the situation when he got home.


Joan Holland's Condo - 8:00 P.M.

After the church service got out at 5:00, Kyle's family went back to Joan's house to get changed out of their dress clothes and into something more casual. Kyle avoided being alone with Katie, as he wasn't ready to talk to her yet. Katie didn't notice this at first, as she simply thought he wanted to spend time with the rest of the family. But when she asked him if he wanted to go play Modern Warfare 2 and he declined, she knew something was wrong. At 6:30 the family ate dinner. Naturally, Alex provided plenty of laughs and helped keep the conversation light. Kyle, however, was almost completely silent the entire time. Sure, he might laugh at one of Alex's stories or comment on how good the food was, but he never really bothered to talk. Katie, being the ever observant wolf that she was, noticed this and started to become worried. What could be wrong with him?

Once dinner was over Kyle headed to the upstairs bathroom to shower. He took the chance to be alone while he could, as his parents were going to be staying over tonight so they wouldn't have to drive over on Christmas morning. Eliza and John were going to take the upstairs room that Shelly and Katie were using. Shelly and Katie would move downstairs and share the fold out sofa in the living room. Alex, unfortunately, would have to drive over on Christmas morning since he had to head home to pick up a co-workers case file, and then deliver it to his office. This had all happened quite suddenly, as he had gotten the phone call after dinner. To say he was angry would have been an understatement. In the meantime, Katie had changed into her pajamas and was watching A Christmas Carol on DVD with the rest of her family. She missed not being able to snuggle up next to Kyle as she watched the movie. She hoped that when he finished showering he would come sit with her. But when Kyle got out of the shower he simply went to his room. However, no sounds of gunfire or blaring music emanated from down the hall. Katie stood up and walked over to see what was wrong. Kyle not playing Xbox, loud music, or both was highly unusual. Pressing her ear to the door, Katie heard nothing coming from inside. She knocked on the door.

"Kyle? You in there?" Katie asked.

"Yeah," he replied coldly.

"May I come in?"

"If you want."

Katie entered to find Kyle lying on his bed staring at the ceiling with his paws under his head. He looked like he had been crying, due to the redness of his eyes and the fact that streaks of his cheek fur were matted as if wet. Katie closed the door as she walked in and sat on the bed next to Kyle. "Are you okay Kyle?"

"Never better."

"I know that something's bothering you. You've been acting weird all day. You won't talk to anyone, you don't want to yiff me, and you just sit around and mope. What's wrong? I'm your mate, you can talk to me about anything." Katie rested a paw on his shoulder and gave him a reassuring squeeze. However, Kyle turned his head away and gave a long sigh.

"Do you really want to know what's bothering me Katie?" he asked.

"Of course. I love you and it pains me to see you like this."

"It's...I...I don't know whether I can keep being mates with you."

He turned to see a look of utter terror come across Katie's face.

"What?" she asked in utter disbelief.

"I know you love me, and believe me I love you more than any girl on this green earth. It's just that...I'm afraid we're going to Hell for what we're doing."

"Kyle, we already talked about this, remember?"

Kyle sat up and looked Katie in the eyes. "Yes we did, but I never said I agreed with you."

Katie tilted her head in confusion. "Then why'd you mate with me?"

"Because I saw a girl who had suffered the pain of heartbreak because some SOB thought he could use her for his own pleasure. I saw that you were in pain, and it was my duty to fix it, even if that meant I had to compromise my own morals. But I've come to realize that because I love you so much, I can't keep being your mate." Katie looked down at the bed as tears formed in her eyes. She felt like her heart had been ripped from her chest, and she started to cry. "But...but...I love you Kyle! You promised you'd always be there for me. You promised me last night you would never leave me! "

"I am always here for you Katie, and I'm not leaving you. It's just... I don't want to hurt you."

"I don't understand," she said as she tried to keep from completely breaking down, "How could you hurt me by being my mate?"

"I don't want to be the reason you end up in Hell. It's my job to protect you, and if that means ceasing to be your mate to protect the state of your soul, well then so be it."

"Kyle...please. I don't want to lose you!"

"I'm sorry Katie. I just can't have that on my conscience. I promised you I would always love you, and I still do. But I'm not risking an eternity of pain and suffering for a few moments of fun." Kyle reached a paw out and stroked the side of Katie's face as the tears ran down her cheeks.

Katie looked up at his with her soft brown eyes and said, "Kyle, I know you're worried about the morality behind our relationship...but please...don't leave me. You're the most special person in my life right now; you were my first for God's sake! Don't you love me enough to see I don't care if what we're doing is wrong?"

"I'm not leaving you Katie, and I love you more than anyone else in the world. It's just that I don't want to be the reason you end up in Hell."

"You already are!" Katie forcefully stated back at him.

"What?" Kyle asked with a confused stare.

"I'm in Hell right now because you're telling me you're leaving me." Katie cried, her emotional state having effectively reached rock bottom.

"Wait...you're using that comparison too?"

"Huh?" she asked in between sobs.

"When I was in church today, I asked myself would I rather spend eternity in Hell for mating you, or send you to a virtual Hell now by leaving you."

"Really?" Katie asked, the tears no longer forming.

"Yeah. I...Katie I don't want to stop being your mate. It's just that... I just need to know you won't blame me if we both end up burning for all eternity. I don't want you to hate me. That's the one thing I fear more than death or rotting in Hell." Kyle looked at the ground, thinking that Katie probably did hate him right now. However, when he looked back up at her she had a consoling look on her face and a slight smile.

"Kyle, it was my decision to become mates with you," said Katie as she reached a paw out and rested it on his shoulder. "I would never blame you for something that was my own fault. But haven't you thought about how there has to be a reason we became mates?"

"A reason?" Kyle asked. "What do you mean?"

"Everything happens for a reason in life. You've always been there for me; you've always made me feel better. By being my mate, you're really just fulfilling your purpose in life."

"You might have a point there...but I still think I'm going to Hell."

"Well if you are, I'll be there with you silly." With that she embraced him and nuzzled his neck.

Kyle chuckled and wrapped an arm around her, giving her a light squeeze. "Yeah, I guess you're right." He let out a long sigh and said, "I think I need a little more time to myself though."

Katie stood up and said, "Alright, I'll leave you alone for now. But promise me you'll still be my mate."

"I promise. I'll be yours for now, and forever. I guess that's something that will never change."

"Good. I'm going to go back to watching A Christmas Carol. When you're done thinking do you want to come watch what's left with me?"

"I'd like that," he said with a reassuring smile.

With that, Katie left him alone. Kyle sighed deeply and brooded. 'There's no going back now,' he thought, 'So I might I as well do my best to make her happy.' He chuckled to himself as he asked, 'Do they have a special place for guys like me, or will I get my own corner of Hell like Hitler and Stalin?' ************

10:00 P.M. - Kyle's room

Nothing is happening here, they're down in Florida remember?

You: Oh, heheh, right! Sorry!

************ 10:01 P.M. - Kyle's room in his grandmother's condo

Two hours ago, Kyle had gotten out of bed for thirty minutes to go watch the last of A Christmas Carol with Katie. After that he returned to his room and lied back on his bed, deep in thought. Even though it was Christmas Eve and there were presents for opening tomorrow, Kyle felt neither emotion nor excitement about the coming holiday. He knew what he was doing was wrong, but he had promised his sister he would remain her mate, and damn it all to Hell if he was going to break that promise.

Kyle knew he was many things; a hypocrite, a slacker, and a typical rebellious teenager. He knew he was not a model Christian, even if all his friends thought that. He looked at porn, pawed off, and played M rated video games that his parents didn't know about. Most of these things he had tried to keep hidden from Katie, but she still found out about them-and yet she loved him anyway. However, for all the bad things that could be said about Kyle, the one thing he promised himself he'd never be was a liar. He knew that by telling Katie he'd remain her mate forever had pretty much done him in. There was no chance in Hell that he was going to back out now, and so he decided to suck it up, get in the right mindset, and be the best possible mate he could be to Katie.

Kyle was shaken from his thoughts by a knock at his door. Turning his head, he saw the door slowly creep open as Katie quietly slipped in. Kyle smiled and asked, "What's up sis?" Katie grinned and said, "Merry Christmas big brother! Are you as excited as I am?" Kyle shrugged as he sat up on the side of the bed as Katie took a seat next to him. At this point he noticed she had one of those fancy ribbons you stick on top of a present stuck to her forehead. He couldn't help but burst out laughing and asked, "Uhh, Katie...what's with the ribbon?"

"Hmm, I thought I'd let you open your Christmas presents from me early this year."

"Are you saying you're my present?" he asked while gently stroking his fingers behind one of her ears. Katie murred and leaned into his paw as he massaged that sensitive spot that wolves (and most canines for that matter) have behind their ears.

"Yeeeeeeaaahhhh, you could say that I'm one of them...me being in heat and all," she said with a hinting smirk as she rested a paw onto Kyle's crotch. "But I got you another one too." With that, she handed him a thin rectangular box neatly wrapped in red paper.

Kyle took the present, and upon observing it he realized it was either a DVD or an Xbox game. 'That's nice,' he thought, 'she probably went to Gamestop and got me something she'd think I'd like.' However, when he ripped off the paper his eyes nearly popped out of his head like in the cartoons.

"Whoa! You got me Assassin's Creed II? How'd you have enough money for this?" Kyle asked with utter awe. Katie grinned as she saw that Kyle loved her gift. "I had saved up about $65 from my baby sitting jobs I do for Mrs. Kelson. I figured I'd get you something that you'd use a lot."

"Sis, you have no idea how much I've wanted this. I was almost broke after I got Modern Warfare 2 and renewed my Xbox Live subscription." Kyle tightly hugged Katie and said, "I'll get you your gifts now. Although, I feel kinda bad now since I didn't spend that much money on them."

"That's okay," Katie replied, "I'm sure whatever you got me will be great." Her reassuring smile put Kyle's mind at ease as he went to his suitcase and pulled out his gifts. First, he handed Katie a necklace with a cross hanging from it. Inscribed on the cross was the verse Philippians 4:13, which reads, "I can do everything through Him who gives me strength."

Katie grinned and said, "Oh Kyle, I love it! Thank you!"

"Heh, yeah that was kinda a last minute one I picked up from the store at the church. I thought that verse might come in handy, especially when you enter high school next year. That, and I wanted to give you something else besides this." Kyle then handed her a stiff piece of white paper folded into quarters.

Katie opened the paper to reveal a black and white pencil drawing of...her! Katie's jaw dropped as she looked at the picture. It was a sketch of her holding a white flower while looking up at the sky with a thoughtful smile on her face. She had a similar photo on her Facebook page, so she guessed that he drew his inspiration from that. However, she noticed that there was a note in the bottom right corner of the page that read, "Ego diligo vos." Katie realized that this was Latin for "I love you."

"Kyle this is amazing! How'd you get to be such a good artist?"

He shrugged and said, "Well, to be fair I just took a picture of you from Facebook and traced it. Although I did do most of the finer details and shading myself. You think it's good though?"

"Of course! I love it as much as the necklace. But what really matters is that you took the time to make this for me." "I didn't really have a choice Katie. It was either make that or not get you anything..."

"That's not true," Katie said with that cute smile that always made Kyle's heart melt for her, "You had plenty of time to buy me something before we left, but instead you chose to make me a gift of your own. That means a lot more than anything you could have bought for me."

Kyle nervously chuckled and said, "Well, I'm just glad you like it. I'm sorry I didn't get you anything fun though."

"What are you talking about, of course you did!" Katie said with a mischievous grin.

Kyle felt Katie rest her paw on his crotch again, however when he looked down he saw that she had stuck the ribbon from her forehead onto his pants.

"Wow...you can't make a stronger hint than that," Kyle said more to himself than to Katie, who simply giggled at his apparent discomfort. "Umm, I assume you want to open this gift now too?" asked Kyle.

"Oh yes, please big brother! Can I?" Katie said with feigned excitement.

"Fine," said Kyle who realized he was starting to get hard. "But before you...umm...open your gift, where is everyone else?"

"I'm not sure, I know grandma is asleep, but I think Shelly is still awake."

"Dang it. Sorry sis, but you're gonna have to wait a bit longer."

Katie gave him a pouting expression and crossed her arms in disappointment.

"Now now," said Kyle, "I'm not turning you down, I'm just saying we have to wait until everyone is asleep."

Katie heaved a long sigh and said, "Fiiiiiiiiiiiiiiine, I guess you're right. So what do we do now whoa....!" Katie was caught off guard as Kyle suddenly wrapped his arms around from behind her and hugged her close to him. He pulled her down onto the bed so that they lay in the classic spooning position on his bed. Kyle nuzzled Katie's neck and gently kissed her before reaching over her and turning off the lamp next to the bed.

"What if mom and dad come in here?" asked Katie.

"I'll tell them we were listening to Christmas music and that we fell asleep."

Katie sighed happily and wiggled her body so she could snuggle up closer to Kyle. She slowly felt sleep come over her as she took in the solitude of the Christmas Eve night. The room still had a fair amount of light coming in from the Christmas lights from the building across the street. The whole room was bathed in a gentle red glow that added a feeling of warmth and peace to the scene. Down the hall outside of Kyle's room a radio had been left on and "Jingle Bell Rock" was playing through the speakers. Katie felt her eyelids grow heavy, and try as she might; she just couldn't keep them open.

Kyle slowly petted Katie's arm fur as they lay on the bed. His gentle touch helped relax Katie, but it also aroused her. Being in heat, it didn't take much for her to get turned on, and Kyle's touch was not helping matters. Fortunately, sleep was the stronger bodily need at the moment, and a couple of minutes later Kyle could tell that Katie had drifted off to sleep. Kyle sighed happily and slowly drifted off to sleep as well, but not before praying, 'Please God, don't let her wake up till morning.' His prayer would be answered...but not in the way he'd expect.


1:32 A.M. - Kyle's room.

There's still nothing here. It has to say "Kyle's room in his grandmother's condo."

You: Well who the f**k came up with that idea?!? >_<

*********** 1:33 A.M. Kyle's room in his grandmother's condo

"Big brother, are you awake?"

Kyle shifted in place as Katie's soft voice brought him from the depths of sleep and into reality. As his senses came to him, Kyle noticed that he was now lying on his back, and Katie was lying on top of him, straddling his waist. Yawning, Kyle rubbed the sleep from his eyes and said, "Aaaaahhhhh.....what time is it?"

"One thirty-ish," replied Katie.

As Kyle's eyes adjusted to the dull glow from the neighbor's Christmas lights that provided the only illumination in the room, he realized that not only was Katie on top of him, but that she was naked as well. He gently rolled out from under her and stood up, walking around a bit to get the blood flowing. "(Yawns again). Sooooooo, is there a reason you woke me up this early?" Kyle knew the answer, but he hoped Katie wouldn't have the courage to tell him.

"Wellllll, everyone's asleep now so...I was hoping I could open my last gift from you."

"What gif....oh. That. Sis...I'm kinda tired. I don't think I'm up for it."

Katie hugged her knees to her chest as she sat on the bed and looked at the floor, a dejected look coming over her face. "Oh...okay."

"Katie...please don't be sad."

Katie shot him a glance and said, "That's easy for you to say! Why won't you mate with me? I thought you said you were okay being mates with me, and now you're refusing me for the second time."

Her words stung like salt to a wound, mainly because they were true. He was trying to back out, and Katie had realized it. Kyle gritted his teeth and mentally kicked himself for it. This had to stop; he was her mate and he'd be damned if reneged on his promise to her. 'Well,' he thought to himself, 'here goes nothing.' Kyle then surprised Katie by quickly stripping out of his shirt and pants and suddenly tackled her on the bed.

"Kyle, what the..." Katie tried to ask. However, she was cut off as Kyle pinned her down to the bed by placing his paws on her shoulders and then pressed his muzzle to hers. Although a little surprised at first, Katie soon relaxed and closed her eyes as she gently moaned and eagerly returned her brother's kiss. After a few seconds Kyle broke the kiss and stood back up, smiling down at Katie.

Sniffing the air, Kyle asked, "Hmm, still in heat I take it?"

Katie nodded and invitingly spread her legs for him. Kyle wasted no time kneeling down on the floor and burying his muzzle in Katie's dripping wet pussy. Katie was quite surprised at how aggressive Kyle was, as he immediately sank his tongue into her folds and started lapping up her sweet juices. Kyle briefly brought his head up so he could playfully grin at Katie and say, "Mmmmm, I swear you taste like strawberries sis."

Katie giggled in reply, not so much from the complement, but because Kyle's muzzle fur was visibly coated with her succulent juices. She then said, "Kyle..."

"Yes Katie?" he replied with a tilt of his head.

"I'm glad you're my mate even though you're my brother."

Kyle smiled and leaned over her so he could cup her muzzle in his paw. "I love you too Katie. I'm sorry...for..." He stopped and took a deep breath. "Can you forgive me for being a jerk earlier?"

Katie smiled deeply at him and said, "Aww, of course I do Kyle. I know you were trying to protect me and didn't want to hurt me."

"Thank you sis," he happily replied.

"You're welcome, but could I ask you something?"

"Of course sis, anything."

"Could you please YIFF ME ALREADY!"

Kyle winced slightly as she raised her voice. "You're that horny huh?"

"You're a guy, Kyle. You don't know what being in heat is like."

"I don't think I want to either," he whispered to himself.

"What was that?!" Katie sternly asked, having overheard what Kyle had said.

Kyle's ears flattened across the top of his head. "Uhh...you look beautiful and I love you!" he quickly exclaimed. Not waiting for a reply, Kyle quickly lowered himself back to Katie's twat and resumed eating her out. Katie gasped and moaned as Kyle worked his tongue across her slit and then pushed into her and swirled his tongue around. She tightly grasped the bed sheets and clenched her teeth. Katie sat up so she could look down and watch as Kyle skillfully moved his tongue in and out of her, carefully stimulating every delicate nerve ending his tongue could reach. She then leaned back while still propping herself up with her arms.

Kyle had noticed Katie's change in position and looked up at her with a playful smile as he withdrew his tongue from her passage and started to lick across her clit, which had finally been teased out of its hood. Katie looked back down at him, her expression showing just how wonderful Kyle's actions felt. As their eyes met, Kyle gave a quick playful lick across Katie's clit, snickering to himself as she gasped and jumped a little. He paused for a second, and then gave another darting lick, making Katie jump again.

"Stop teasing me like that!" she gasped as he gave her a third lick.

"Heheh, feels good I take it?" he asked with an innocent grin.

"Ohhhh gods you have no idea..." she sighed as he finally stopped teasing her and started giving her clit his full attention. He gently suckled it while also slipping a pair of fingers into her tight passage, gently stroking her walls and making her squirm in delight.

"Wow sis, I don't think I've ever seen you this wet before."

"Ugh! I don't think I've wanted you this badly before either!" she gasped.

"Hmm, well then why don't you come off the bed and kneel on all fours for me?"

"Why would I do that?"

"Because I don't want to have to explain why my little sister's cum is soaked into my sheets."

Katie rolled her eyes and said, "So I take it if my cum ends up in the carpet it's okay then?"

"Oh it won't make it to the carpet, trust me," Kyle said with a seductive grin.

Katie chuckled as she moved onto the floor and onto her hands and knees. "Now what?" she asked.

"Move your tail for me."

Katie complied and lifted her tail so it curled up and hung over her back, giving Kyle a perfect view of her well formed butt and dripping pussy. Kneeling behind her, Kyle placed his paws on her butt and resumed licking her tender folds. Katie closed her eyes and moaned rather loudly as Kyle brought her closer and closer to the brink of orgasm with each lick. Being in heat only intensified the feelings flowing through her, and soon Kyle pushed her over the edge and into a state of pure ecstasy.

"OH OH OH! YES! Kyle, you're making me cum, oh gods!" Katie cried out as her vaginal walls clenched and her cum poured out of her. Katie panted hard as her orgasm ripped through her, making her knees and wrists feel numb. The fact that Kyle was eagerly lapping up every drop of cum that leaked out of her wasn't helping either, as the continued stimulation from his tongue only prolonged Katie's orgasm. As her orgasm peaked, Katie's cum stopped flowing out of her and instead merely trickled down her left thigh. Kyle quickly lapped it up, keeping his promise that none of her cum would touch the carpet.

Katie felt like a feather slowly falling in a zigzag pattern through the air as she came off her orgasm. As her senses returned to her, she looked back over her shoulder to Kyle and said, "Wow Kyle, that felt amazing!"

"So are you ready to go back to bed now?" he asked.

"Heck no! It's like you said, we have to yiff until I pass out in order to not be horny anymore."

Kyle rolled his eyes at himself for giving her that idea. "Very well," he said, "But I should warn you I won't be as gentle as last time."

Katie felt a little nervous as he said this and asked, "What do you mean?" She got her answer when he suddenly pounced on her, although he did not knock her to the ground, as that was not his goal. Instead he had his chest pressed against Katie's back, and his paws wrapped around her so that he could grope and squeeze her breasts.

"Whoa, Kyle wait this seems a little..." She was cut off as he clamped his muzzle tightly around the left side of her neck and pressed his teeth into her pelt.

"Yipe!" Katie exclaimed at the sudden show of dominance from her brother. Kyle did not let up until Katie gave several pleading squeaks and whimpers, showing that she submitted to him.

"Good girl," Kyle said cooly.

"Kyle, what's gotten into you?" Katie asked, now a tad scared at her brother's roughness.

"You wanted Big Brother to be your mate, and so now you get your wish."

Kyle alleviated her fears to a degree as he mouthed her neck a second time, although he did not press his teeth against her and instead caringly licked at the slight wounds he had given her. He hugged her closer to him and gave her breasts a gentle squeeze as he lined up the tip of his cock with her slit, gently pressing against her lips and listening to her moan.

"Please..." she started to say.

"Please what?" he asked with an air of slyness.

"Yiff me! I want to feel you in me!"

With that, Kyle thrust his hips forward and sank his throbbing length deep into her warm depths. Time seemed to freeze as Katie's slick folds enveloped Kyle's throbbing length. The two siblings cried out in unison as the warm, tingling waves of pleasure cascaded through their bodies. Katie clenched her teeth and moaned as her brother's stiff cock pushed deeper and deeper into her until finally he had hilted himself within her. Katie broke out in a light sweat as the pleasure within her loins grew. She could tell Kyle was enjoying himself too, as she could feel his heartbeat on her spine as he hugged her tightly into his chest.

The two mated like a pair of feral wolves, with Katie submissively standing on all fours while Kyle mounted her and rested himself on her back. His arms wrapped around her and he took one of her breasts in each of his paws, gently massaging them as he quickly thrust in and out of her. As Kyle mated her faster and faster, Katie's moans became louder and louder. Kyle, still taking a dominant role, quickly clamped his muzzle on her neck again and growled deeply. Katie's ears immediately flattened across her head and she let out a frightened whimper to signal him to stop. At first Kyle thought he had hurt her, but then he felt like something was tickling his stomach.

'What the hell is tha...her tail! Her tail's wagging!' he thought to himself. With this realization he gave her neck another gentle nibble along with a more playful growl.

"Ow! Kyle what are you doing?" Katie asked with a slight hint of fear in her voice. However, with that she felt Kyle tighten his muzzle's grip on her neck. "Yipe! Kyle please, why are you doing this?"

Kyle released her neck long and said, "Because I know you like it. I know you like the fact that I normally treat you as my equal, but I've learned you have a hidden desire for me to dominate you like a real male."

"Wha...h-how do you know that?" Katie timidly asked, not wanting to have him bite her neck again.

"Mmm, I don't know. But it might have something to do with the fact that your tail has wagged like crazy every time I've made you submit to me."

"K-Kyle I don't know why it's doing that, but please......I don't like it...ow!" Katie exclaimed as she felt Kyle's teeth against her neck again.

"Don't lie to me. You know you like it. Admit it." Kyle firmly commanded.

"I...I like it."

"Good girl." And with that he gave her breasts a firm squeeze and then almost completely withdrew himself from her pussy before slamming himself back inside her. Katie threw he head back as the waves of pleasure cascaded upon her, making her arms feel weak and her head feel dizzy. Kyle gritted his teeth as he felt Katie's inner walls tighten their grip around him as he pushed Katie closer and closer to orgasm. Katie panted for breath and lowered her head to the floor as her arms gave out under her. Although this forced Kyle to lean forward even more, the new angle of attack allowed Kyle to sink himself even deeper within Katie than her thought possible as he rammed himself into her with increasing zeal.

"AH! AH! Oh gods!" Katie gasped as Kyle pounded her tight sex with an almost feral passion that she had never known resided in the confines of his personality.

Kyle still had the side of Katie's neck clamped in his muzzle, although he made sure not to press his teeth into her. Instead, he gently licked at the few minor scratches he had given her; helping to both soothe and heal them.

"Hhhmmmm, feels good when I yiff you like this doesn't it?" he asked.

"Oh gods yes! I love it!" was Katie's eager reply.

Katie was swimming in an ocean of pleasure. The combination of her brother's fast paced yiffing combined with him tightly embracing her made Katie's whole body feel lighter than air. Her breathes became pants, and her pants became gasps as her heart beat faster and faster in order to keep up with the intense feelings of ecstasy growing in her loins. She found herself clenching her teeth to keep from shouting out how great it felt each time her brother's rock hard member hilted itself inside her tight sex. Katie knew Kyle wasn't too far off from orgasm, as his grip on her breasts became tighter, and his pelvic thrusts became less rhythmic and more erratic. Kyle then hilted himself within her, but briefly stopped to catch his breath.

"Ugh! Kyle, can I...(pants) ask you something?" Katie managed to ask as she too tried to catch her breath.

"(Pants) Of course...sis...you can...ask me...anything you want."

"Well, I have two questions actually. First, why do you like mating me this way?" she asked with a warm smile, indicating that she was not mad at him, just merely curious.

"What do you mean sis?"

"Why do you like dominating me? You never acted like this before."

"Oh, that. Hmm," Kyle said as he thought to himself before grinning and seductively saying, "Think of it as my way of getting back at you for being cute and irresistible, and therefore impossible to say no to."

"Wait," she said, "Are you saying it's my fault we became mates?" Kyle chuckled and replied, "Hmm, maaaaayyybe."

"And are you saying you're mad at me for it?" Kyle playfully nipped one of Katie's ears and said, "Mmm, yes. But don't you like the way I've chosen to take my anger out on you?" As he said this he removed his right paw from Katie's breast and reached under her to find her clit, and upon locating it he started rapidly stroking it with his index and middle fingers.

"OH GODS!" Katie yelped at the sudden influx of pleasure. "Yes, I must say you've picked an excellent way to convey your anger, oh fuck!" Katie blushed deeply as she realized that she had just cussed in the middle of having sex with Kyle.

Kyle grinned at this and replaced his right paw on Katie's breast. Having caught his breath, he resumed thrusting his swelling shaft in and out of Katie's slick pussy. Kyle lovingly nuzzled Katie's neck as he mated her with renewed vigor. He felt as if an aurora of warmth and happiness had filled the room as he tightly hugged Katie's soft furry body close to his. Katie's fur was incredibly soft, at least compared to Kyle's rougher, more masculine fur. Leaning forward so he could whisper in her ear, Kyle said, "And what was your second question Katie?"

"Ugh! Could...ah! Could you...oh!...not tie me when you cum?"

"Sure, but why?" Kyle said with an inquisitive stare.

"Because...uhhh....I want you to be able to pull out after you're done," Katie rapidly answered.

Kyle nodded his agreement, but he felt like she was hiding the real reason for the request. Nevertheless, he'd do as she asked. As he increased the pace of his thrusts, Kyle felt the familiar tingles that signaled his approaching orgasm. Kyle gritted his teeth as a mentally counted down how much longer he would last before he came. '...5,4,3,2,1...oh god,' he thought to himself.

Suddenly his whole body went rigid. Instinctively he pushed himself deep into Katie, although he made sure not to tie her by mistake. He hugged her close to his chest and gripped her fur tightly as he let out several strong gasps as he fired his hot wolf cum into Katie's fertile womb. Katie had to bite her lip to keep from screaming as she achieved orgasm a few seconds later. Her arms and legs felt weak, and it seemed like time itself had frozen as the waves of pleasure jolted through the very fiber of her being like a bolt of lightning. Both wolves panted as if they had run a marathon as their orgasms peaked and slowly receded into the pleasing warmth of the afterglow. Kyle suddenly felt drained of energy and pulled out of Katie so he could fall backwards on the floor.

"Ooooooooooooooooooohhhhhhhhhh gods sis, that was incredible," he moaned.

Katie merely sighed in contentment. She finished catching her breath and slowly sat up on her knees. She turned and looked at Kyle, who was still lying on his back on the floor drifting off to sleep. Katie smiled to herself as she crawled over to him. She cautiously crept closer and closer, not wanting to alert him to her intentions. Then, without warning, she pounced on top of him and quickly pinned his shoulders to the floor with her paws while resting her hips against his waist. Kyle immediately awoke and stared wide eyed up at his sister.

He smiled and said, "Very funny Katie, now please get off of me so I can go to bed."

"Hmmm, nah," she casually replied.

"What?"

"I'm not tired yet, and since I'm in the peak of my heat I'm still hungry for more yiffing."

Kyle rolled his eyes and said, "I promise we'll pick it up in the morning, but right now I'm going to bed." However, as Kyle reached his arms up to try to roll Katie off of him she suddenly brought her mouth down on his neck and bit hard. "OW! Jesus Katie, that hurt!"

Still holding his neck in her maw, Katie gave a long and forceful snarl, telling Kyle to back off. Kyle suddenly felt a twinge of fear creep through him, and he immediately submitted to Katie's will.

"Okay, okay...Katie you win! I'm not gonna try to touch you, okay? Now please stop biting me," Kyle quickly yelped. Katie released her grip and gave him a long lick across where she had just bitten him. She then patted him on the top of the head and said, "That's a good boy."

"Sis, what has gotten into you? Don't tell me you're mad for what I just did four minutes ago." Katie tilted her head at him and said, "Why would I be mad at you for that? That felt amazing," she said with added emphasis. "No, I'm doing this to pay you back for scaring me that you were going to stop being my mate. I'm not too happy about that, and now you're going to make it up to me." She gave him a sly grin and traced a finger in a circular motion around his chest. "Wanna guess how you're going to do it?"

"I have an idea. But good luck getting me to go through with it."

Katie frowned and said, "I don't like having to bite you, but I will if you make me."

"Yeah, no kidding. But in case they didn't teach you this in biology, you can't make a guy get hard by nipping his neck."

Katie looked beneath her and realized what Kyle meant. His penis was still limp and slightly red, having just ejaculated a sizeable load five minutes earlier. She thought to herself for a minute and then looked down at Kyle with a wide, coy grin on her face. "Oh, I see what you mean. I guess it makes sense that biting you wouldn't make you hard, but what about this?" Katie then slid her backside up Kyle's body so that she was sitting on his chest with her pussy only an inch from his muzzle. Her scent immediately became overwhelming and Kyle felt blood starting to flow back into his member.

Katie looked down at him and said, "Well? What are you waiting for?" Kyle looked back up at her before cautiously leaning his muzzle forward and giving Katie a gentle lick across her slit. She moaned and nodded her head approvingly while briefly looking over her shoulder to see that Kyle's member was about 50% fully erect. She looked back down at him and noticed he was bringing his arms up off the floor.

"Ah ah ah, no," she said like a parent disciplining a child, "Keep your hands on the ground or I'll have to bite you again, and I know you don't want that."

Kyle let out a whining moan and flattened his ears, but complied nonetheless and rested his arms back on the floor. He couldn't believe his sister was sitting on him, forcing him to yiff her again. Katie moved back down so that she straddled Kyle's waist. Taking his member in her paw, she gently stroked his shaft until he became fully hard once more. Katie quickly guided Kyle's wolfhood into her and then replaced her paws on his shoulders so that he couldn't get up. She was surprised he hadn't taken the chance to throw her off of him when she had been pawing him. Katie smiled down at Kyle, who in turn looked back up at her with a mixture of aggravation and lust. She could tell he liked being dominated as much as she did. After nipping at his neck again, Katie whispered, "Does it feel good big brother?"

"Can't say that I'm not enjoying myself," he replied.

Katie brought her face up so that her nose was only a centimeter away from his. "Oh come on, don't be like that. I know you like the fact that your little sister has a dominant streak just like you. And you like the fact that I can make you yiff me."

Kyle couldn't help but smile back at Katie's mischievous grin. He figured the fact that his tail had wagged every time she pinned him down had given it away. Kyle then gasped as Katie pushed herself down on him to the hilt. He looked up at her with a look of awe on his face as she rode him with incredible force. Kyle couldn't believe how great it felt. Having just mated Katie, his member was still sensitive and hadn't fully recovered yet. And now Katie was pushing him to new heights of pleasure he hadn't thought were possible.

For Katie, being in heat had its many advantages. For one thing, sex felt even more incredible due to the added slickness and improved blood flow. But another, more subtle advantage was that her adrenal glands worked twice as hard. And so five seconds after taking Kyle into her pussy a second time, Katie's adrenal glands released a second dose into her bloodstream. Almost instantly her heart began to race like she was trying to sprint uphill. With the sudden burst of energy Katie was able to ride Kyle's cock for all it was worth. She panted hard for breath and closed her eyes as she mentally took in just how amazing it all felt.

Kyle gritted his teeth and clenched his fists. Like Katie he was almost in a state of complete nirvana, and also only a matter of seconds away from cumming. Instinctively he placed his paws on Katie's back and gripped her fur as the powerful sensations of his approaching orgasm rippled through him. Katie, however, took this as a sign of hostility and quickly bit Kyle on the neck again, only this time Kyle didn't submit. He instead growled sharply at her and suddenly flipped them both over so that now he was on top. Katie released his neck in surprise and timidly looked up at him. Kyle had a look of anger on his face and had his fangs barred at her. Katie flattened her ears and whimpered.

"K-Kyle...please. I'm sorry, don't hurt me..." Katie tried to say before Kyle surprised her by tightly pressing his muzzle to hers and forced his tongue into her awaiting maw. Katie was taken aback by this, but eagerly returned his kiss. Kyle surprised her again when he almost completely withdrew himself from her, only to slam himself back into her as hard as he could, forcing his knot into her and effectively tying them together. Katie nearly screamed into her brother's muzzle while she kissed him as her orgasm hit her like a freight train doing eighty. Kyle let out a long groan as well as Katie's vaginal muscles tightly clamped around him with a vice like grip. It was too much, and before he knew it his spunk fired out from his member with an intensity he was sure would have killed him had his heart not been in good condition.

Kyle and Katie's bodies went rigid as they held each other close, tongues dancing back and forth as they came together. America could have been in the middle of a global thermonuclear war with Russian and neither would noticed as their orgasms reached their peak. Katie's fingernails dug deeply into Kyle's back fur as she tried to avoid passing out beneath him. She felt her hot cum squirt out of her and soak both her and Kyle's loins with her sticky sweetness. Kyle finally broke their kiss so that he could breathe. Both he and Katie gasped and huffed for life giving oxygen as they slowly felt the throes of post-orgasmic bliss descend upon them like a warm quilt. They both smiled at each other before Kyle realized that he felt very lightheaded and couldn't support himself above Katie. He slowly rolled over again, pulling Katie so that she rested on top of him. Both wolves sighed contentedly as Katie rested her head on Kyle's chest. She felt drowsy and knew that sleep would not be far off.

"Kyle?" she whispered.

"Hmm, yeah sis?"

"Did we...did we just have a fight while having sex?"

"I wouldn't know what else to call it," Kyle replied truthfully.

Katie smiled to herself and said, "Maybe we should solve all of our problems that way."

"I think that's the best idea you've had since you fell in love with me," Kyle replied with a chuckle."

"I love you big brother," Katie sighed before she finally drifted off to sleep.

Kyle happily smiled at the beautiful young wolfess asleep on his chest and whispered, "I love you too little sis, I love you too." Katie smiled in her sleep as she felt Kyle gently pet her ears and stroke her back. Kyle fell asleep a minute later. And so the two siblings slept in each other's arms, passed out on the floor without a care in the world. *********************

Okay, this is by far the longest story I have ever written. 8500 words. New record! :D Anyway, I would like to take this time to wish all of Yiffstar (and soon to be SoFurry.com) a Merry Christmas and Happy New Yew. Oh, and Happy Hanukkah. Yes, I'm wishing a happy Hanukkah to you, you have a problem with that?

Also, important note: My clan tag on Modern Warfare 2 is YIFF in all caps just like that. Join it if you are a loyal fan. My friends John and Reuben, AKA NightWolfz and product59, have done so and have played with me on Xbox Live. And yes, Reuben is Jewish, and therefore awesome (he has the same name as a sandwich, how cool is that?) Anyway, John wanted me to post his gamer tag on here to see how many friend requests he'll get. So yeah, it's: A Rapping Panda. Catchy isn't it? So yeah, ad him and tell him to buy a microphone, because he's too lazy to go out and buy one. Seriously, even Reuben, who is JEWISH FOR CHRIST'S SAKE, has a microphone. John claims he doesn't like the way his voice sounds, but I say so what, I don't like the way mine sounds either. As for Reuben, he sounds pretty cool. He's basically your generic 19 year old gamer who yells, "SHUT THE FUCK UP YOU LITTLE F****T!" at 10 year olds who think they are cool for playing an M rated videogame. And, umm, yeah I'm done here.