Shrugging your shoulders you say "eh i got nothing to lose" and close the clasp of the necklace around your neck and wait. As the moon begins to rise you notice the gem begin to glow brighter and brighter you start to second guess yourself thinking that it's probably just a prop necklace that has a built in light that is lunar powered. However right when you are about to give up and take the necklace off you suddenly see something out of the corner of your eye.
When you look over to see what it is you see a line of smoke rising up from your shoulder blades, you look down in horror as you see the necklace catch on fire and begin burning itself into your skin, however your initial panic subsides as you realize that it does not hurt at all but a new panic takes over as you realize that the gem is now permanently embedded in your chest and you mutter "what the fu-" but you are instantly cut off as your whole body then catches fire and you begin to start screaming.
Amazed at the fact that you are on fire but not burning to a crisp your panic subsides but only for a minute as you begin to levitate off the ground. You shiver as you feel your body shifting and changing. First thing you notice is the fire has managed to burn away every last bit of body hair you had on your body aside from the hair on your head making your skin feel extremely smooth. You then hear audible cracking as you feel your bones shifting and re arranging inside your body. Your back begins to arch backwards as you lose a significant amount of height shrinking from your once 5'10" height to a more modest 5'5" height.
After that you feel a tingling sensation wash over your entire body as your skin takes on a crimson hue, no longer looking like human skin at all. You then start to moan as your ass and hips expand to child bearing proportions and your feet shrink from a size 12 to a size 9. Next your waist caves inward as your shoulders also narrow inward making you lose all broadness in your chest. next your arms slim down as well as your legs losing any bit of muscle they once had.
Next your neck slims down making your Adams apple disappear into your neck. Your face also gets rounder and more petite as your lips plump up and take on a pouty position. Your hair then starts to cascade out the top of your head billowing down your back and stopping at the base of your spine. finally a ginormous amount of pleasure washes over your body and you begin to orgasm for the first time as your penis rises to attention. You then bite your lip as you look down at your shaft and as it begins to descend into your groin you can't help but roll your eyes up into the back of your head and loll your tong out as your penis disappears into your groin leaving a smooth surface behind.
You then audibly moan in a high pitched feminine voice as your balls follow suit being sucked into your groin they then re arrange themselves to be in position of ovaries as they then transform into ovaries and your body explodes with even more pleasure as a slit is formed in your lower abdomen right above your anus and a new female womb is formed that then connects itself to your new ovaries. panting now from the sheer amount of pleasure you just experienced you then let out another series of moans as your feel your nipples tense up and two mounds begin forming on your chest.
You can't help but to bring one hand to your new sex as you begin to finger yourself while also placing a hand on one of your budding breasts as you start to simultaneously finger your new cunt while also groping your budding breasts. as you squeeze your mammaries you then burst into a moaning fit as you feel them growing ever bigger with every squeeze growing from an A cup to a C cup, then D until they finally stop growing at a perky size of DD.
You are overwhelmed with emotions as to what just happened to you but you quickly realize that the fun is not over yet and you begin to scream in pain as two limbs begin to burst out from your shoulder blades taking on the from of two massive wings. Next your spine begins to ach as it elongates and a spaded tail begins forming on your lower back right above your ass. You then feel a tingling sensation in your fingertips and toes as your nails elongate into nail like claws. Finally your head get's fuzzy and you begin to find it hard to think as two horns begin to sprout from your forehead.
As these horns grow and curl back over the top of your head you then begin to find it even harder to think as you realize you no longer even remember what your name was and your mind then empties and is ripe for being corrupted. your head then begins throbbing as new memories begin flooding your mind. while this is happening you also fail to notice a latex succubus outfit starting to take form on your body. Your feet are instantly covered in pitch black latex all the way up to your thighs as the heels of your new boots begin to take form elongating into a pair of thigh high latex high heels.
Next your groin get's covered in a black latex panty that leaves little to the imagination. A latex skirt also forms to cover up the base of your tail and your panties. Next a latex bra forms over your breasts with thin shoulder straps with the jewel from your necklace as the centerpiece. Finally a pair of latex gloves form over your hands extending up until they cover your while arms stopping just before your shoulders. As your outfit finally finishes forming over you lovely demonic form so does the corruption overtaking your brain and with that one final change occurs to your eyes making your pupils elongate into slits as your eyes take on a glowing yellow hue.
You then open your eyes and lick your lips with your new spaded tong. The only thing on your mind is the thought of cum and the desire to drain it from every man that crosses your path. You then laugh as you recall that there is a costume party tonight and you then lick your lips in anticipation again.