Elder Sister

Your corrupted friends stream from out of the building as you smile to yourself and wander down the hallway towards your sister's classroom. On your approach, you can sense her a few feet away. A sinister grin crosses your sleek lips in anticipation of turning your humble sister into a debauched slut. Stood outside her classroom, you peek through the window and see a group of students talking amongst each other whilst your flustered sister attempts to lead the class.

Knowing this situation could be changed for the better you rap your knuckles on the door. From the corner of your eyes, you briefly see Jodie roll her eyes before she heads to the door. She seems surprised to see you upon opening the door. Grabbing her hand you gently ease her out into the corridor and around the corner away from prying eyes. As soon as the door was opened your enhanced physique started excreting pheromones into the crisp air. Jodie received a large dose before she melted into your embrace.

Feeling as though the time was right, you dropped your glamour and revealed your demonic self to Jodie. Your sister merely looked up at you in lustful awe as your pheromones took full effect. Her sleek lips curled into a smile as she softly spoke: "Take me you demon stud and make me your total fucking whore". Not wanting to disappoint the wanton slut you slam her body against the locker and lift up her hung skirt with your impressive twelve-inch rod.

Jodie let out a yelp as you thrust your cock between her slick cunt lips. She rolled her hips back against your pistoning cock whilst your testicles slapped rhythmically against her firm rump. Sensing she was nearing her climax and would start her transition into a sinful beauty you shove a clawed fist between her luscious cheeks. Your sister lets out a shrill scream, instinctively you grab at her face and pull her into a lewd kiss. She briefly smiles as your serpentine tongue wraps around hers, after a few moments you push the bitch away. Baring your fangs you dive forwards and bite into Jodie's pulsating neck as your cock erupts deep within her cunt.

All is quiet as Jodie was relieved of her pitiful human soul and became a sinful worshipper of the idol. Once the tainted cum had entered her system her changes rapidly took effect. Her pudgy body slimmed down to a perfect hourglass figure, whilst her firm rump became toned. Her once A cup breasts inflated to a DD cup whilst staying firm and riding high on her lithe crimson form. She mewled in ecstasy as two onyx bat like wings erupted from beneath her sleek crimson flesh. Jodie threw her head back allowing her luscious onyx locks to flow down her flawless skin. Knowing that she was almost complete she gazed up at you with lust in her slit crimson eyes.

Moaning lustfully she slid off of your throbbing cock and eased herself to a standing position. Instinctively you slap her rump, as she keens in lust and wraps her cock tipped tail around your muscular arm. Cum oozes from her tainted cunt as she winks sultrily before turning and walking back towards the classroom. Slowly her form shifts back to an enhanced version of her former self, with one hand on the knob she turns to face you. As she slowly parts her lustful lips to hiss "It's time for show and tell, want to lend me a hand stud?". You stand for a moment as you think about Jodie's sinful request...