I stared into the drink resting at the bottom of the cup, its brown hue lightened by the cup's clear, white inner walls. It seemed to mock me. "Come on, drink me," it said. "You can down me in one gulp! What are you waiting for? Are you really that afraid?" I tried my best to drown out its heckling as I leaned in for a sniff, just to test the waters. Slowly, my chest puffed out and the pungent odor surged into my nostrils. It was strong, blunt, and burning. Even the smell was intimidating.

	I took a moment to look at my friends. To my right was my older friend, Cole, a bull. His brown fur matched the color of the drinks he brought us and his white horns looked deadly, like they could gore you if he merely thought it. To my left sat Robin, a rabbit. His fur was a pattern of black and white that weaved across his body with no cohesion. The color was similar to my border collie fur, but my pattern was much more uniform (and, dare I say, beautiful). They both looked intently at me, anxiously waiting for me to take my first ever sip of alcohol. And of course, Cole just had to get me something strong.

	"Fuck it," I thought. "I'm not gonna let a damn liquid get the best of me!"

	With a sudden burst of courage, I tilted my head back, brought the cup to my lips, and lifted the bottom. The drink rolled down the cup's walls and dropped into my mouth, which I promptly swallowed. I could immediately tell I was not remotely prepared. The burning taste filled my mouth like a deadly gas. It slid down my throat like fire. I coughed in a vain attempt to reduce the pain, but the alcohol would grant me no kindness, only hurt. In the midst of my crisis, I felt a rough thump on my back.

	"Atta boy!" Shouted Cole as he pat my back. "Now, only fourteen more to go! Fifteen shots for the fifteenth birthday boy!"

	"Hell no, are you insane?" I retorted. "I could barely do the one!"

	My protest was met with laughter from the both of them.

	"Alright, alright," Cole let up, "we'll take it slow, your mom ain't gonna be back 'til tomorrow, but this night ain't over 'til that bottle's empty!"

	Before we could do much else, I heard the familiar light thumps of my sister coming down the stairs. Her fur was similar to mine (we are the same breed, after all), and her droopy ears almost covered her eyes. She was dressed in her pink pajamas with cute little unicorns on it, and carried her teddy bear by the arm in one paw.

	"What are ya drinkin', Evan?" She asked, tilting her head at me. She was so cute you'd think she was doing it on purpose.

	Before I had time to answer, Cole butt in. "Drinks for big boys and girls. You want a sip?"

	"Dude!" I replied, shocked. "She's ten!"

	"So? You're fifteen, we're all underaged here. Just a sip won't hurt her. Look, she really wants to try."

	Eager for a taste of the forbidden "big girl drink," she did certainly want to try. And I could never say no to those pleading eyes.

	"Okay, okay. But just a sip!" I permitted. Cole nodded and went straight to pouring the drink. I didn't watch him, but I could swear I saw him reach for his pocket right before pouring the drink. Maybe he was just checking his phone.

	"Here ya go, Emily," Cole said warmly as he handed my sister the drink. "Swallow it fast, now, it's strong."

	Emily looked at it for a second, and with much less hesitation than me, downed it. She reacted as you would expect a ten-year-old to react to drinking spirits, which coaxed some laughter out of my friends. I was still uncomfortable with this all, but at least it was over.

	"That drink sucks!" Screamed Emily after she regained her composure. "I'm going back to my room! Y'all can have whatever the heck that is!" She promptly stormed up the stairs to her room so fast she almost tripped.

	And thus, we continued our night, playing video games and occasionally downing another shot, but we were pacing ourselves well. Our intense gaming sesh - that I was winning, by the way - came to an abrupt stop when Cole showed us a small bag filled white powder.

	"The hell is that?" I asked.

	"Jeez, I'm not gonna snort cocaine, Cole!" Robin piped up.

	"It's not coke, dumbass." Cole responded, "This is the shit that's *really* gonna make this night. Swallow just a little of it and you're out cold in minutes. Nothin' can wake you up for hours."

	"And how's that gonna 'make this night?'" I asked.

	"I put it in your sister's drink."

	My heart fucking dropped.

	"W-Why would you do that?"

	"Come on, man, you know why. She's fucking cute. I know you feel the same way. And you too, Robin."

	Robin didn't answer. He just sat there, blushing hard. I didn't know what to say, either. I was shocked, disgusted. Part of me wanted to tear him apart with my bare paws. But another part of me was... intrigued, and my body was giving it away. I desperately tried to hide the bulge forming in my pants, but to no avail.

	"Yeah, I can see you're into it. Let's go see how she's sleeping, shall we?" Cole stood up and retrieved a bottle of lube from his backpack, clearing up any confusion there may have been about his intent.

	My heart raced as the three of us ascended the staircase. It felt like it was going to burst any moment now, but nevertheless I followed Cole up the stairs and into my younger sister's room. Sure enough, there she was, passed out on her bed. She drifted off so quickly that she didn't even have time to turn off the game she was playing. Cole brushed her little game console off the bed and pulled down the blanket. He wasted no time lifting her butt up and pulling down her pajama pants. He brushed her tail away and there it was: her anus and pussy, staring back at us, inviting us, saying "Emily's dead asleep. She can't say no. Come here. Play with us."

	"Fuck yeah," muttered Cole, before holding the lube out to me. "She's your sis. You get dibs."

	"F-Fuck... no, I can't," I replied. "This is just... so fucked up."

	"Suit yourself," Cole said before pulling down his pants and squeezing the clear lube onto his cock.

	Cole was pretty big. Maybe seven inches. Huge for a sixteen year-old. He stroked his cock, lathering it up and down with lube, getting it nice and covered. He then got on his knees on the bed behind my sister and pulled her ass over to his cock to do her doggystyle. With both hands on her hips, he lined up his cock to her anus and started pressing into it, harder and harder, until the resistance of her tight ass broke and he plunged inside.

	"Oh fuck yeah," Coled moaned, "Ngh! So fucking tight."

	I watched on in horror as he sunk his cock deeper into my young sister until his hips pressed against her rump, moaning all the way. Then he pulled back and thrust right back in. Each thrust seemed easier for him, like he was loosening her up as he fucked her.

	"Can I take her mouth?" Robin piped up, breaking my trance.

	"Be my guest."

	Robin eagerly climbed on top of the bed. He was a little smaller than Cole: around five inches, but still nothing to scoff at. He didn't take his time. Eager get his nut off, he quickly opened my sister's mouth and plunged his cock inside, moaning as he did so.

	There I was, watching my two best friends spitroast my prepubescent sister. I can only begin to describe what was racing through my mind. It was horrible, depraved, evil. I was seeing a side of my friends I never knew, and it was dark, but I couldn't look away. There was something about it. Something deep, deep down. Primal. Behind all the horror and wickedness. My base, ancient, animal instincts. It was hot. So, so hot. The hottest thing I had ever fucking seen. I wanted more. I wanted to fucking ravage her.

	"Fuck... I'm gonna cum in her," Cole growled through his gritted teeth. His breathing got loud, his thrusts got slow and twithcy, until he finally let out a loud groan and plunged deep into her. I couldn't see it, but I knew: he was cumming in her ass. Soon after, Robin did the same. He didn't announce it or say anything. But I could tell by his motions and sounds. He was cumming in her mouth.

	"Damn, Evan," Cole remarked through heavy breaths. "Your sister's a good fuck. We should do her awake next time."

	He slowly pulled out of her, his thick, massive load pouring out of Emily's gaping ass as he freed his cock from her clutches. Robin joined him as they got off of the bed and sat on the ground to catch their breath.

	"I see that bulge, boy," Cole said to me. "I know you want to fuck her. Go on. Don't feel bad, she's asleep, she can't feel anything. You won't hurt her."

	He was right. I wanted to fuck her. No, I *needed* to fuck her. I needed it so fucking bad. With a gulp, I grabbed the lube and got on my knees in the same position Cole was behind my sister. I slowly pulled down my pants, freeing my needy cock. I squirted the lube onto it. It was cold, but I knew my cock wasn't going to stay cold much longer. I lathered my cock up, staring into my sister's inviting pussy. Cum rolled down from her ass and dripped from her pussy. It only made her look more ready for me, as if to say "Yeah, I took that big guy. I can take you too."

	Finally, I was lubed up enough. I lined up my six inch, knotted canine cock to her pussy, and started pressing. It wouldn't go in. I feared she might be too small for me, but I wasn't going to give up now. I pressed harder, and harder, until finally, her entrance gave way. My red cock plunged into her tight, warm pussy for all but the knot. It was fucking heaven. Finally, after what felt like hours of watching, I've finally taken the initiative and sunk my cock into her sweet, small, supple body.

	I thrust myself in and out of her slowly, savoring every second and committing to memory that succulent sensation of my cock sinking deep into the tight, warm embrace of her pussy. It was deeply fulfilling. An unspeakable, ancient desire was being met. That desire was always there, before I was born, before my parents were born, before the earth was born. It drove men to fight, to build societies, to discover the secrets of the world. And here, in this moment, knot-deep in my unconscious, ten-year-old sister, that overwhelming desire was finally being satisfied.

	But I wasn't done yet. No, that desire was not quite fulfilled. I had to knot her. I had to knot her so fucking bad. Only then would the ancient desire truly be satisfied. So I thrusted and thrusted. Plunging my cock deep into her pussy. Ravaging her to loosen her up, until I felt it. That sensation deep within my loins, quickly filling my cock with bliss. This was it. I had to knot her now. I made one final thrust. With a tight grip on her hips, I pulled them toward me while pushing my hips forward. Putting everything I had into it, pushing as hard as I possibly could. I could feel it, her pussy slowly giving away, slowly stretching out, my cock inching forward until finally it reached a breaking point. Her pussy could hold back no longer as my cock surged forward and my knot popped into her. The ancient desire was finally fulfilled. Bliss and euphoria overwhelmed my entire body as I released my load into my sister. My cock twitched as it pumped load after load into her, sending shivers of euphoria throughout my whole body. With each surge of cum, my knot swelled further, firmly lodging itself inside my prepubescent sister and ensuring that each thick rope of cum stayed well inside her.

	The extreme euphoria thoroughly sapped my energy, I couldn't even think. All I could do was stay there on my knees and breathe heavily. "I... I knotted her..." I panted. I still couldn't believe it. I knotted my ten-year-old sister. It's despicable, it's wicked, it's evil, and all I can think is that I want to do it again after my knot recedes enough to pull out.

	"Damn..." Cole whispered. "You're lucky she ain't old enough to have pups yet. I want to try her pussy when you're done there."