No thanks, I'll fuck the demon nurse.

The demon nurse chortles with revelry as you settle-up behind her, phallic glans pressing on the hermaphrodite's lower mons. She bucks back, drawing half her huge horsecock out of your sister- and in so doing swallows your cockhead into her foul tainted purple pussy.

Why did you ever hesitate? Blistering heat, buzzing pleasure and a hungry squeezing from her soft purple pussy-walls swallow your cock in slow crawl to your root. You forget all about your quest when you feel her labia clinging to your cock, and as corruption overtakes you, you realize these sensations really are good enough to drive people mad.

Working her hips back onto your crotch, then forward to plow your sister's puffy bare cunt, you lean into the demon nurse's back and wrap your arms around her in a hug. She croons and grunts with her own pleasure as the three of you equally relish corrupt sex; your sister's glazed eyes and twitching lower lip somehow don't bother you.

Using her arms to push forward- your sister thrusts herself onto the demoness' crotch, panting with a fresh coat of sweat across her breasts. "Urnfhh- auuah, aaahh!" She howls in corrupt pleasure while foul fluids seep from her squeezing sex in a pungent mixture, all of which is soon overwhelmed by a deluge of the she-demon's hot semen poured-up into your pregnant sister's pussy.

Your sister's toes curl and her nipples visibly harden, her eyes empty as if washed-out by unearthly sex. The demon nurse draws back with a satisfied groan, then your sister lets out her own grunt of relief. You feel an incredible soft texture enveloping your balls- it's the nurse's own ballsack, her greatest weakness pressing up against yours.

Her head leans-back to graze across your cheek... "Do it- cum in me, just like I seeded her!" She cries out, as interested in your own semen as much as she was in planting her own.