Green eyes glowed in the dark, the only light in the darkened alleyway, as the soldier continued his patrol, blissfully unaware that his life was about to end.  The Communist trooper didn't even seem to notice that the light had been shot out.

A soft pop, barely audible above the roar of the engine of the nearby jeep, and the soldier fell.  From above, a black cat dropped down, looking around briefly before lifting the soldier's corpse and moving it to hide it in the nearby bushes.  One down, a thousand more to go.  Nobody messes with Robbie Fisher.

A giggle broke the tension.  "Robbie, do you REALLY gotta narrate your games?"

Robbie blinked and looked to his left.  His sister stood at the doorway, completely nude, as she had become accustomed to doing during the summer months (and at the only mild encouragement of their mother).  The fox kit himself wore only his boxers, not yet comfortable going completely nude around the house.

Robbie groaned, not looking up from his game.  "It's better than those silly story lines you come up with when playing with your plushies!"

The young vixen giggled and flopped down on the couch next to Robbie, snuggling up close to him, keeping her legs slightly apart.  "I dunno about that... also, you should climb that fire escape to yur left.  There's some ammo and a first aid kit at the top."

"I know that!" Robbie said, guiding his character up the fire escape.  "I've beaten this game before, you know."

Ellie giggled and nuzzled her brother's cheek.  "I know."

Robbie rolled his eyes as his character stalked along the rooftop, scanning the street through the scope of his rifle.  After about a minute, he paused his game and looked at Ellie.  "You want something.  You never snuggle up to me like this unless you want something."

Ellie gasped and feigned innocence, giving her brother her best puppy dog eyes.  "Why, Robbie, whatever makes you think that?"

"Cut the crap, Ellie," Robbie said.  "I know you.  Now, what do you want?"

"Oh, fine," Ellie said, snuggling in a little closer to her brother.  "Well... I was wonderin' if you might wanna yiff me."

Robbie's jaw dropped.  "Eww!  Ellie... you're my SISTER!"

Ellie giggled softly.  "Yeah, and Mommy slept with both of her brothers, three of her cousins, Grammy and Gramp-"

Robbie put a paw to her muzzle to cut her off.  "Fine, I get it.  But I'm still not doing it."

"Why nooooot?" Ellie whined.

Robbie groaned.  "Look, why don't you just invite Jimmy over if you wanna get yiffed?"

"I can't!" Ellie said.  "His dad dragged him to some stupid family thing today, so he's off in... Pittsfield?  I think that's where he said he was going."

Robbie rolled his eyes.  "Great, he's on the other side of the state.  But, Ellie... I... I haven't even done anything with a girl!"

Ellie giggled mischievously.  "I could show ya!" she said, getting up on her knees next to him, her tail wagging happily behind her.  "Pleeeeeeeeease?"

Robbie sighed and looked down at his crotch.  His cock was just starting to stiffen, creating a little tent in his boxers.  "Oh, fine... but just this once!"

"Yay!"  Ellie threw her arms around her brother and hugged him, adding a peck on the cheek as she clambered into his lap.  As soon as she was settled in his lap, her paws flew down to his crotch, quickly pulling his stiffening dick from the fly and rubbing the tip against her already-moist slit.

Robbie gasped and stared down at his crotch, watching for a moment as his sister fondled his cock.  He put aside his controller and grabbed her hips.  "So, how does this 'vagina' thing work?" he asked, chuckling nervously.

Ellie grinned, grabbing Robbie's shoulder with one paw to hold herself steady as she kept her other paw on his cock, guiding it against her lips.  "Like this!"  Slowly, Ellie lowered herself down into her brother's lap, his now-fully-hard cock pushing in between her lips, earning gasps from both of them.

Robbie wrapped his paws around his sister, hugging her and shivering softly at the feel of her warm, wet folds surrounding his cock.  "Oh, wow, sis... you're so warm and wet..."

Ellie moaned softly, putting both her arms around her brother.  "It's a perfect fit," she whispered, giggling a bit.  She didn't remain motionless for long.  As soon as she got herself into a comfortable position, she began to bounce up and down in Robbie's lap, letting out soft squeaky moans as his member slid in and out of her warm pussy.

Robbie shuddered, his paws wandering down and squeezing Ellie's buttcheeks as she rode his cock, his body trembling as he fought back his moans.  "Oh, god, sis..."  Before he knew it, Robbie began to buck his hips up into his sister, joining her in the incestuous mating, holding his sister close as he panted his pleasure in her ear.

The two siblings held tight to each other as they rocked together on the couch, Robbie driving his cock as fast as their positioning would allow into his sister's pussy.  A small gasp escaped his lips as he felt Ellie pressing her muzzle to his, and quickly melted into the kiss, allowing his sister's tongue to sneak its way into his muzzle.

Their kiss didn't last long.  Ellie pulled back, letting out a soft, breathy moan, and whispered, "Tie me, big bro..."

The fox kit showed only a moment's hesitation before complying with his sister's request.  He drove his hips up hard, holding tight to his sister as he worked his knot up into her warm, velvety passage, shuddering with pleasure and moaning softly into her ear.  "Sis, I'm gonna..."

With a sudden pop, Robbie's knot sank fully into his sister's cunny, her crotch grinding against his own as they united.  Both pups shivered and moaned, cumming simultaneously, Robbie's cock twitching and squirting his seed into his sister's spasming pussy.

For several seconds, the two kits ground up against each other, their orgasms rocking their bodies.  Ellie came down first, nuzzling into her brother's chest as he finished squirting into her.

"Mmmm... love you, big bro," Ellie whispered.

Robbie laid his head back and gave his sister a small squeeze.  "Love you, too, sis," he replied.  "Guess we'll be stuck together for a little while."

Ellie didn't respond.  When Robbie looked down, he saw that his sister's eyes were closed, and her breathing had become quite regular.

'Great... she fell asleep,' Robbie thought, rolling his eyes.

As gently as he could, Robbie reached around and picked up the remote and his controller.  He turned down the volume on the TV, then unpaused his game and kept playing, being careful to hold his sister steady in his lap as he played.

Just outside the door, unbeknownst to either kit, Terry had watched the entire scene, a paw down her panties teasing herself.  The older vixen grinned as she slowly backed away, pulling her paw from her panties and licking it clean as she returned to the living room.  She settled down in her favorite recliner and picked up the phone, pressing the speed dial button as her free paw roamed back down to her slit.

After three rings, her husband, Dan, picked up.  "Hi, honey."

"Hey, love," Terry said.  "How's work?"

"Oh, you know.  Busy as usual.  Though I'm sure you didn't call to ask about that."

Terry giggled.  "Oh, Danny, what would ever make you think that?"

Dan sighed.  "You never call unless you've got something to say.  So, what's on your mind?"

"Oh, I think you'll be needing to have a chat with your son when you get home," she said.

"What about?" he asked.

"Oh, he just discovered the pleasures of females."

Dan was quiet for a second.  "Let me guess.  Ellie?"

Terry giggled.  "They look so adorable together on the couch in the den."

"Somehow, I feel like you had a paw in this," Dan chided, chuckling.

"It wasn't me this time, surprising as that sounds!" Terry said, feigning affront.  "It was all Ellie's doing."

Dan chuckled.  "Well, she is your daughter... alright, I'll have a talk with him when I get home."

"Thanks, babe.  Oh, and how does pasta sound for supper?  I can make your favorite sauce."

"Sounds great, dear.  I've got to get going now.  See you at seven."

Terry grinned.  "Love you, Danny."

"Love you, too, dear," Dan replied, hanging up the phone.

Terry giggled as she put the phone down, her fingers of her free paw teasing her sex.  She was going to have so much fun with her kits...

*	*	*	*	*	*	*	*	*	*	*	*

Dinner was a fairly subdued affair for the cubs.  Ellie couldn't help but keep grinning through the whole meal, while Robbie remained unusually pensive.  Their parents' conversation went right over their heads.

"I swear, I'd lose my mind if it wasn't for Mr. Woolf," Dan said as he twirled another bite of spaghetti around his fork.  "He's our only author who routinely self-edits before submitting.  I wish we could drop some of the assholes."

Terry giggled, reaching a footpaw under the table to tease her husband's.  "So why don't you?  Doesn't assistant editor mean anything?"

Dan sighed and rolled his eyes.  "You have no idea how much I'd love to.  But they've become some of our most popular.  Much as I'd like to push them off onto someone else, they're big sellers.  I guess their success just went to their heads.  Plus, it's quicker on them to just let us deal with grammar and spelling and making sure their damned stories are internally consistent.  They can produce more that way."

"Tsk tsk.  Such trouble," Terry said.  She glanced over at Robbie and nudged him.  "How's your dinner, sweetie?"

Robbie jumped, his neck snapping up as he looked at his mother.  "What?"

Terry giggled.  "I asked how you're liking your dinner, sweet heart," she said.

"S'fine," Robbie said, refocusing on his plate as he resumed eating.

"I think it's awesome, Mommy!" Ellie said, grinning as she dug in with renewed vigor.

Terry nudged Dan's footpaw with her own under the table, and cocked her head toward her son.  Her husband nodded, and mouthed "After dinner."

This didn't turn out to be long for Robbie.  "I think I'm gonna head upstairs," he said suddenly, pushing out from the table and getting up.

"Aren't you going to finish your dinner?" Terry asked.

"Nah.  Not really hungry," Robbie said as he walked out.

Ellie giggled.  "Can I finish yours, then?"

"Sure, whatever," Robbie said as he disappeared out of the kitchen.

The young vixen giggled and reached across the table, pulling her brother's still-half-full plate over, and scooped it onto her own as her parents exchanged glances.

Dan stood up and walked around the table, giving Terry a kiss on the cheek.  "Thanks for dinner, love," he said, adding in a whisper, "I'll go check on him."

The older fox sighed as he went upstairs.  He found Robbie in his bedroom, lying on his bed, staring up at the ceiling.

"Hey, kiddo," Dan said, poking his head in.  "Mind if I come in?"

Robbie shrugged.  "Sure," he said.

Dan nodded and walked in, and took a seat on the edge of the bed next to Robbie.  He placed a paw on his son's stomach and rubbed slowly in circles.  "You look like you've got something on your mind.  Care to talk about it?"

The kit shrugged again, shutting his eyes and pressing his belly up into his father's paw.  "I dunno..."

The adult laid down on the bed, pulling Robbie into a cuddle.  "Is it about earlier with Ellie?"

Robbie's ears perked.  "You know about that?"

"Your mother called me at work to tell me... said you might want to talk about it when I got home.  I think she might have been right."

The kit sighed and settled in to his father's arms.  "Yeah... I guess..."

Dan nodded and kissed between Robbie's ears.  "Whenever you're ready, son."

Robbie shook his head slowly.  "Just... she's my sister... isn't that supposed to be wrong?"

"Well... it sort of runs in the family," Dan said.

"Oh, not you, too!" Robbie cried, turning around to look into his father's eyes.

The adult blushed a bit, flattening his ears.  "Well, I wasn't as promiscuous as your mother, that's for sure... but I did have more than a few passing encounters with your Uncle George..."

Robbie rolled his eyes and looked away again.  "But... what about Martin?"

"Robbie... I can't tell you how he's going to feel about it.  But if you really love each other, it shouldn't have to mean anything other than that you like boys and girls, and your sister... well, that your sister is your mother's daughter.  And now that her sex drive is awakened... this is going to happen.  Of course, you know that it's alright to say 'no,' too, right?"

The fox kit sighed and shrugged.  "I dunno... she just... she was so eager... and it made her so happy when I finally agreed..."

Dan nodded and nuzzled Robbie again.  "Your mother and I will both be having a talk with her later, too."  He remained quiet for a moment, his paws still working over Robbie's belly.  "You going to be alright, son?"

After a few moments of silence, Robbie nodded.  "Yeah... I think so.  Thanks, Dad."

Dan smiled and gave Robbie a kiss on his cheek.  "Good.  I hate to see my boy this down."

The two remained still for a minute, Dan holding Robbie, the kit listening to his father's breathing, feeling his heartbeat through his chest.  Their ears perked as footsteps approached.

"Doing better now, honey?" Terry asked.

Robbie looked up at his mother and nodded.  "A little... hey, Mom?  Could we talk?  Alone?"

Dan slipped out of the bed and gave Robbie's shoulder a pat.  "I'll leave you two for your talk, then."  He stretched, then looked at Terry.  "Where's Ellie?"

"Downstairs in the den," Terry replied, giving her husband a quick kiss as he walked past.  The vixen watched her husband go, then sat down on Robbie's bed as the kit pulled himself up to sit on the bed next to her.  "What's on your mind, sweetie?"

Robbie sighed as he crawled up next to his mother and rested his head on her shoulder.  "Mom... it's ok if I want to yiff Ellie, right?"

Terry laughed.  "Of course it is, sweetie!  As long as you're safe about it, of course."

Robbie nodded, then looked up into her eyes.  "And... it's ok if I DON'T want to?"

The vixen settled down, and looked back into her son's eyes.  "That's ok, too.  You don't have to do anything you don't want to do.  You know that, honey pie."

The kit sighed and nodded, nestling in against her.  "Ok..."

Just then, the doorbell rang.

"I'll get it!" Dan called.

Terry put an arm around Robbie and rubbed his shoulder gently, and nuzzled the top of his head.

A minute later, the sound of footpaws pounding up the stairs greeted their ears.  Martin slid to a stop right outside Robbie's door.

"Robbie, are you-- WHOA!"

Martin clapped his paws over his eyes and turned around.  "Uh... hi, Mrs. Langley."

Terry laughed and stood up.  "Hello, Martin.  Sorry I forgot to get dressed... it's become a bit of a habit to just lounge around the house in our underwear."

"N-no problem," the wolf replied, backing into the room and keeping his eyes covered.

"It's not going to make you go blind to see me in my underwear, you know," Terry said, patting the wolf on the back as she walked out.  "I'll leave you two alone."  The vixen pulled the door shut behind her.

As soon as the door shut, Martin uncovered his eyes and dropped his backpack on the floor, then turned to face Robbie.  "Your family is SOOOOO weird," he said as he ran up and pounced the fox.  "You, however, I don't mind seeing in your undies."

Robbie laughed and caught his friend, hugging the wolf as he landed.  "What can I say?  We're, uh... very open."

The wolf laughed and rolled off of Robbie, then pulled his t-shirt off and tossed it aside.  "Well, since everyone else is doing it..."

Robbie grinned and watched as Martin stripped down to his briefs, then hugged him.  "Much better... say, what are you doing here, anyway?  Kinda late to be showing up..."

Martin laid down on the bed, pulling Robbie down with him, and nuzzled his cheek.  "Your mom called my mom and asked her if I could come over tonight.  Said something about you maybe needing me."  The wolf rolled onto his side, and grinned at the fox.  "So, couldn't stand being away from me for more than a week?"

The fox blushed and turned away.  "Well... I had a weird day today..."

"Weird?  Weird how?" Martin asked.

Robbie gulped, and nestled in against the wolf, looking away.  "I sorta... yiffed Ellie today..."

Martin froze, staring at the back of Robbie's head.  For a few seconds, he was quiet.  Then, he started snickering, soon breaking into full-blown laughter.

The fox turned around and looked at Martin.  "Whaaaat?"

"Your family is SO weird!" Martin said between laughs.

"So... you're not mad?"

Martin panted heavily, wiping tears from his eyes as he tried to stop laughing.  "I just... you and Ellie..."  He broke out into another round of laughter.  "Oh, man!  That's just..."

Robbie sighed and whacked the wolf's nose.  "Martin, I'm serious!  I was really worried you'd be mad!"

The wolf giggled and settled down, lying on his back and panting.  "Sorry... but why would I be mad?  You and... oh gawd, Ellie," he said, struggling to suppress another laughing fit.  "Just don't do it again.  Unless I can do you while you do her!"

Robbie groaned and rolled away from Martin.  "Whatever."

The wolf chuckled and followed Robbie, hugging him from behind, and kissed his cheek.  "So... I don't suppose you'd be up for a little bit with me, huh?  Not gonna just tease me and make me jealous without making it up to me!"

The fox smiled and looked up into Martin's eyes.  "I think that can be arranged..."

*	*	*	*	*	*	*	*	*	*	*	*

It was still dark when the fox woke up.  He kept his eyes shut for the moment, giving Martin's still-sleeping form a gentle squeeze.  A tingle down below informed Robbie of why his body had chosen this hour to awaken him: he needed to pee.

With a small groan, Robbie squirmed across the bed, careful not to rock it too much and awaken the wolf.  Of course, there was little fear of that -- Martin tended to be a heavy sleeper -- but Robbie didn't want to run the risk.  He glanced at his alarm clock as he padded out of the bedroom.  The red digital display read 2:23.

Stifling a yawn, Robbie padded out of his bedroom, his footpaws guiding him automatically to the bathroom.  He didn't bother to shut the door, just walked right up to the bowl and rolled his sheath back, freeing his flaccid penis.

Of course, the fox's penis didn't remain soft for long.  By the time he'd finished and shook off the last few drops, Robbie had a full hard-on.

"Dammit," he muttered as he flushed the toilet.  He'd yiffed Martin not once, not twice, but three times that evening!  How could he STILL get a raging boner?!

Resolving to take care of it when he got back to his room, Robbie washed his paws, then began the trek back down the hall to his bedroom.  When he was halfway back, he paused, coming to a halt right outside of his sister's bedroom.  Against his better judgment, he looked in.

Aided by the dim glow of her nightlight and the moonlight shining in through the open window, Robbie could just make out the sleeping form of his sister.  It seemed that Ellie had gone to bed nude again.  She lay on her belly, snuggling her pillow, and from his vantage point at the door, Robbie could just make out the gentle curve of Ellie's rear.  His erection gave an involuntary jump as his eyes came to rest on his sister's butt.

For a long minute, Robbie was fixed to the floor.  He glanced down the hall toward his bedroom, then back to his sleeping sister.  Robbie had a hard decision to make.