Sibling bonding over a horsecock

Encouraged by your sister, you don't hesitate when you join her on the floor, moving closer to worship Irnerin's massive horsecock as your sister had requested. While you eagerly dive to suck her balls into your mouth, Morgan hungrily shoves the large cock into her mouth, moaning in pleasure. Irnerin chuckles, obviously amused at the hunger displayed by the sluts servicing her cock.

"Damn, never in my wildest dreams I thought I'd have not one, but two Bravehearts on their knees and sucking me off! Today sure is my lucky day," she crows with a grin. You don't give much thought to her words, busy as you are with servicing her large, leathery nutsack. However, it's kind of an awkward position, the one you're **** into, because you have to fit yourself to the space available with your own sister, who's eagerly going to town on the demon's she-cock, gurgling and gagging happily.

Taking a moment to admire your sister's nude body, you watch as her large breasts, probably still full of milk from her pregnancy, bounce and sway around with her frantic back and forth. The movement is almost hypnotic and almost subconsciously reach out to grope her breasts, enjoying how the squishy flesh gives and bends under your hand. Morgan flinches, surprised at the sensation on her breasts, but quickly grins after taking the massive horsecock out of her mouth.

"Damn, bro, you really are a dirty perv, aren't you? Playing with your big sis breasts... Good thing I'm feeling really horny right now! Fuck, pull at my nipples, c'mon!" she shouts, going back to stuffing her face with Irnerin's cock.

You do just that, playing with her breasts as much as you can while you press your face against the she-demon's nuts with a smile. As the musky scent of her sweaty balls hits your nostrils, you pull and tug at Morgan's breasts, enjoying the way she moans and gurgles.

However, the demon decides she's been idle long enough and she brings her clawed hands to rest atop your sister's head. "Ugh, you two were really meant to be demon sluts, huh? I'm happy to see two siblings bonding over their genuine love of shemale. Demon. COCK!" Irnerin shouts, slamming her large cock all the way into Morgan's throat. Excited, you watch as it bulges visibly, but whether it's magic or the corruption already settling within Morgan, there's no reaction aside from a mild groan of mild discomfort. "You, slut boy, stop staring and get back to my balls! I want them shiny and clean by the time I'm done here!"

That's an order if there was ever one and with an agreeing hum, you return to lavish praise and love on her large balls, popping them into your mouth. The long- drawn-out moan that escapes the demoness' lips as you do so tells you you're doing great and you make sure to keep her happy, lathering her nuts with your tongue even as Morgan starts to ****. Irnerin hasn't let up and she's still hilted to the end inside your sister's throat, pumping vigorously into her. It's a rough treatment of your sister, but she seems to be enjoying it, if the constant lustful moaning is anything to go by.

You spend the next minutes like this, worshipping Irnerin's big balls as she fucks your sister's throat, but eventually, you start to feel how her balls clench and contract inside your warm mouth. "Ugh... get ready, slut! I'm about to paint your throat white!" she exclaims. With a loud shout, she starts to cum inside Morgan's mouth, which you can tell because her nutsack is clenching wildly, churning cum at a rapid pace as her cock shoots an ungodly amount of seed into your sister. Instead of struggling, Morgan eagerly takes everything Irnerin gives her with a smile around her cock, looking up at the grinning demon.

Although your position isn't the best (most of the time you've been staring at Irnerin's pale pink perineum, after all!), you can still glimpse a bit your sister's own corruption spread a bit further, as the pale blue tint of her skin darkens just a tad. When the she-demon leaves Morgan's cock with a loud popping sound, she laughs as your sister gasps for breath even as her hands wildly seek her own pussy.

"Fuck, that was fucking great! I could spend days drinking that stuff..." your sister breathes, staring at Irnerin's softening cock with a lewd grin.

"Maybe when you're a full-fledged succubus, bitch. Think of it as a prize to fully become a demon," Irnerin teases, but your sister moans pitifully.

"I don't think I'll be able to wait that long."

"Oh, don't worry. The more you fuck around and the more depraved you are, your corruption will spread faster. So you know what to do. Chop chop, sluts! I'll be seeing you around!" Irnerin exclaims with a laugh before she exits the room through the window and takes off flying to god knows where.

And now you're left in the hospital room with the cold corpse of your brother-in-law and your own sister, already being corrupted by Lilin's forces. Seeing her nude, disheveled state is incredibly arousing. With her skin increasingly blue from her growing corruption, large breasts, mussed blonde hair and sticky with leftover demonic cum and spit... Damn.

The absolutely smoldering look she sends your way does nothing but confirm your thoughts.

Your cock, even though it's smaller than it was originally, has never been harder in your entire life.