As the form of her monstrous self became clearer where my short girlfriend's head was I could now see boobs. A nice voluptuous pair held together by little more than a bra. It was just an image, but I could swear the cleavage was drawing me into their warm canyon.
Cindy getting a little uncomfortable asked "Umm... So what am I?" which I ended up not even hearing, "Josh? I'm getting a little concerned... Why are you staring at me like that?" She attempted to get out of my gaze, but I was following the hypnotic fun bags now bouncing with her motions. The timid Cindy asked "Um... You said that it couldn't change us into Elves or monsters right? I'm starting to get tingly." Cindy started breathing a bit more heavily as I stared at her monstrous form's chest heave up and down.
A few seconds later the boobs started to move up to me, and then a clawed hand shoved the magnifying glass out of the way. In front of me now wasn't a pair of breasts contained in something that looked like a bra, but a generous pair of breasts barely contained in Cindy's sweater that seemed to be only a cup size or two away from it bursting. A sultry voice coming slightly above me said "Fucking Josh, time to take some responsibility for this!" I felt myself pushed to the ground hard and then the ripping of my pants. The breasts leaving my view made me want to move, but quickly my hard dick was encompassed in a tight warm moist hole. The feeling made me feel like I was orgasming over and over again without Cumming. A second later I let loose a large load go and started gasping for air... My body just felt incredibly tired despite not doing much of anything. I was drained and only regained lucidity with my body being held slightly above in the air giving me a good view at Cindy's face. It was more angular, the lips rather plump, and her face pale... More than that she had horns? Now that I was thinking about it I was being held with something that felt like hard claws and warm soft palms. "Finally, John What The FUCK!?! I thought I wasn't supposed to change!?!" I realized now that my girlfriend was now a Succubus... and that she was bigger and stronger than me... and was pretty angry for justifiable reasons.
"Well Cindy that's what the shop owner said... Wait I know what we can do!" I said trying to be helpful
"What?" the rather upset Succubus asked