When we got to the room, Penny opened the door, and I felt a bit of dread. It was like I was being pulled into the room by a heavy force, even though I knew it was just Penny's power. I glanced around the room, seeing a bed with chains and a few other things that I didn't recognize.
"Here, let me show you how to put the chains on," Penny said as she took my hand and walked me over to the bed.
I watched as she showed me how to chain her up, and then I did it myself. I felt a bit of dread as I put the shackles around her wrist and ankles, but I knew that it was for the best.
"Once these are secure, you should be safe from any harm," I said, and then watched as Penny started to shift. Her eyes started to glow, and her body started to stretch, but I could see that the chains were holding her in place.
"Galio, I don't want to hurt you, so please stay away. I think that the chains will hold me in place, but I can't promise anything," Penny said, her voice almost a growl, and I smiled.
"Stay away?" I asked as I crawled onto the bed over top of Penny and then leaned down to kiss her.
I could tell that she didn't want to give in at first, but as soon as I tore the dress from her body in a single motion, she gave in to her hunger. Penny started to passionately kiss me back, and I squeezed her small but plump breasts before I moved, kissing down her neck, and started to suck on her breasts.
Penny was panting now, but she pushed my head to keep down until I reached her hairy red pussy that was already dripping with excitement. I started to lick her clitoris, and Penny's back arched as she let out a low howl. I felt her gasp and then moan as I kept licking, and I could feel her body start to shake along with her tail, and I started to rub at the base.
This seemed to drive her crazy, and Penny started to howl and whimper at the same time. I kept going, but I could feel her body starting to swell as hair started to grow everywhere.
"Oh, My God! Please don't stop! I don't think I can last much longer!" Penny screamed, and then I felt her body start to burst with pleasure, and then her tail started to stroke my back as she shook and screamed in pleasure.
It seemed like forever before the pleasure started to subside, and then Penny lay there in a blissful state, her body still shaking and her eyes still closed as I climbed back on top of her. It seemed that the orgasm had stopped the change, but her moans soon became growls, and I was already taking my pant's off.
I got up from the bed, and then grabbed the key to the cuffs, and started to unlock Penny's chain, but she tried to stop me.
"What are you doing?! I am still going to change!" Penny pleaded, but I still kept unlocking them.
"We can hardly have fun when you are like that, and I have to take you from behind so I can stroke your tail," I said as I unlocked her last cuff, but then her toenail scratched me.
I looked over at Penny and smiled at the glowing red eyes that were staring at me with rage in them as Penny started to transform. I had forgotten about her blood healing, but this would make my life a lot easier since I didn't have to worry about hurting her as much as this.
It took less than thirty seconds for her body to swell up, but her face only became slightly more wolfish than it had before. The rest of her body was covered in red fur, only leaving her tits and face exposed.
"That was a bad idea," Penny growled as she advanced on me, looking like she might actually try to eat me.
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"Oh, I am only full of bad ideas," I said, and then activated my own Vampanther transformation.
My body grew until my head scraped on the ceiling, and my muscles all bulged out, making Penny take a step back as the red seemed to bleed from her eyes. She looked down at my cock, gulped, and bit her lip. Then she went down on her hands and knees submissively, pushing her ass into the air with her tail wagging excitedly.
"I have never felt so dominated in this form before or in control of my mind. I want you to take me, Galio. I am ready for you," Penny said as she reached back and pulled her pussy open for me to enter.
I smiled and then pressed my giant, now black cock against her hairy tight wet pussy. I started to thrust, and Penny responded with growls and moans, her eyes rolling back in her head with pleasure.
I grabbed her long red hair in my fist, making her turn back to snarl at me. As she did, I used the leverage to dig my cock even deeper into her wet hairy hole.
Penny's snarl turned into a whimper as I could feel her body clench around me, and I could feel her orgasm start to build.
"Oh, Galio! Please don't stop! I am so close!" Penny howled, and then I felt her body shake as waves of pleasure consumed her. I kept thrusting, and then I could feel my own orgasm start to build.
I felt my body start to shake as I came, and then I felt my body start to shrink back to my human size. I collapsed on the bed next to Penny and noticed that she had started to change back as well, but then she climbed on top of me, most of her fur gone now, leaving her smooth, soft, and naked body.