You eat out your own sister

Encouraged by your sister, you don't hesitate when you join her on the floor, but not to worship Irnerin's massive horsecock as your sister had requested... not at first, at least. Instead, you go to your knees behind Morgan and get your face the closest it has ever been to your older sister's pussy. Your nose can pick up the musky smell of cum and pussy juices mixed together wafting off it, but the scent does nothing but water your mouth. Hungrily, you dive in for your treat, ignoring the muffled gasp of surprise from your sister.

How many times had you fantasized about having some dirty fun with your beautiful older sister before? Too many to count for sure, but you'll be able to make all your fantasies with her come true from now on, you're sure of it.

You start licking and lapping up at her cunt with an eagerness hard to match while her hips sway from side to side. You don't dare to pull away from her pussy, but the thought that she's sucking Irnerin's massive horsecock is enough to have your cock at full mast. Spreading her pussy lips with a finger, you slowly drive your tongue deeper into her cunt and Morgan arches her back in pleasure as you start stimulating her inner spots.

With a moan, you start to rub and grind your face over her pussy, coating it in a layer of pussy juice and Irnerin's cum. You're loving this, loving eating your sister out, loving smelling the corrupted scent of Irnerin's cum dripping from Morgan's snatch, loving the fact that you're both giving yourselves wholly to debauchery while the corpse of your uncle-in-law is cooling not even four feet away from you three.

With a grunt, you bend your neck and suckle on her clit, slightly swollen from her arousal. You flick and nudge with your tongue, playing with the clit and each movement and caress you offer it sends Morgan into a small fit of pleasured shivering. Her snatch is fully wet now, lubed with your tongue and the leftover cum from the she-demon, and you make sure to give it all your attention as you mash your face against her pussy, frantically lapping up at it with your tongue and trying to spear her with it.

Irnerin's cum burns pleasantly on your tongue as it slips out of Morgan's snatch, trickling down into your eager mouth while you try to give your older sister the best cunilingus you can.

Her climax isn't announced with words, but rather by the sudden trembling of her legs and the loud moaning coming from her mouth, all but muffled while she's **** down on Irnerin's massive horsecock. Gripped by a sudden instinctive thought, you react quickly, spreading her pussy lips before placing your open mouth at its entrance.

No sooner have you done this, her orgasm suddenly peaks and she squirts, blasting a gush of pussy juice all over your mouth and face.

"Fuck, yes!" she screams. You can't see her face from your position, but you hope there's a look of utter ecstasy on it.

"Keep sucking, slut! I didn't say you could stop," you hear Irnerin snarl from somewhere in front of you and the pleased moan that she lets out seconds later signifies that Morgan did just that with notable zeal. "Agh, better! That's what I'm talking about..."

You smile, face full of your sister's pussy and covered in her spunk as you listen, rubbing your face on her cunt with deliberate slowness. It's not long until Irnerin starts groan and grunting, which can only mean that she's getting closer.

"Get ready, you human slut, I'm gonna cum! Gonna fed you all my seed!"

Curious despite yourself, you pull back from your sister pussy, kneeling next to her to watch the moments before the demoness climaxes. Your older sister is a sight to behold, completely sweaty, the very early signs of corruption already settling in and staring up at Irnerin with lustful eyes while she sucks and chokes on her large horsecock.

Morgan has never looked more beautiful than in this moment, you consider with a small smile that grows excited when Irnerin harshly grips your sister's head. "Here... IT. COMES!"

Even though the demon shoves Morgan harshly down on her cock, your sister doesn't protest. Quite the opposite in fact, as she seems intent on swallowing as much cock as possible. She doesn't get much more in, unfortunately (doesn't even reach halfway of Irnerin's cock, really), but you have a front-row seat to the sight if her throat bobbing for quite some time. It can only be Irnerin's cum, which she's shooting nonstop into Morgan's throat.

You stare with some amazement. You kinda want to place your hand on her throat and feel all that hot cum pouring in, but this is still Morgan's first experience with demon cock. It must be perfect...

And if the blissful look on her face is any indication, there's no doubt it is.

However, you begin to feel a smidge of worry when neither of them make any move to pull back, even when Morgan starts to gag and cough into the demoness' cock. With a shudder, her eyes roll back and she slackens, falling down just as Irnerin pulls out of her mouth. Your sister falls to the ground, but there's no reaction from her. She's completely passed out.

"Whew, thirsty bitch. I hadn't cum so hard in centuries. Must’ve been more pent up than I realized," Irnerin says with a smug smirk as her cock starts shrinking ever so slowly.

"Huh... want me to clean that up?" you ask, eyeing the leaking dick with hunger.

"Wha- Oh, this? Nah, I'll have some other slut in need of being broken in clean it," she says, dismissing completely the tip of her cock, covered in cum and drool. "Time to fuck off and find me some more slutty holes! But listen, word of advice? Make sure you do the mission the Big Boss gave you, m'kay? You don't wanna have her mad at you. Trust me, I'd know," she mutters with a wince before she moves towards the room's window.

"Uh, thanks, I guess..."

"No sweat, little dude. Gotta help our future new members, yeah? Oh and when your sister wakes... tell her I'll be coming back for her whore pussy," she says with a grin before winking at me. "And the same goes for your ass, so make sure to keep it nice and tight. Don't worry, I'll find you!"

And with that she's off, disappearing in a cloud of mist and shadow, leaving me standing in a hospital room with my naked hot older sister and the corpse of her former husband.

Though if she doesn't change her mind once she wakes up, that isn't going to be much of an issue, given her earlier words.