I had barely gotten back to my apartment when my roommate knocked on my door and opened it without waiting for me to answer.

"Heeeey, Olivia. Wanna help me with something?"

Sighing, I pulled myself off my bed and let Nikki drag me to her room.

"Alright, what do you want me to do? I swear if you dragged me out of bed to help you test sex toys again..."

"Nothing like that. I got these magic friendship tattoos from the occult store downtown, and I want to give you one."

"Magic?"

"Yeah! The lady working there said it was some magic transfer device."

"Really. If it's actually magical, how come we haven't seen anyone else with magic stuff? I think you got scammed."

"No harm in trying anyway, right? Besides, these are cool tattoos!"

Nikki excitedly opened the package of tattoos, sliding two out and handing one to me. They didn't look magical, but I had to admit, they were pretty cool. They reminded me of the cheap instant tattoos that I would get as a kid. I pressed it against the back of my right hand, and there was a light fizzing sensation as it attached to me.

"Felt weird when I put it on, but not magical."

"Only one way to find out. Let me concentrate for a second."

Nikki closed her eyes and furrowed her eyebrows as she concentrated on... something. We stood in silence for about a minute before she opened her eyes again. She frowned and closed her eyes again.

"It's not going to magically happen if you try a second ti- Woah, what the fuck?"

I gasped in shock as my body began to compress while Nikki's body began to stretch like taffy. My clothes sagged around my body as I shrank, and I pulled them off before I got trapped in them. However, despite my rapid shrinkage, I didn't keep my original proportions. My entire body was concentrated into a minuscule frame, causing the extra mass to swell up in my boobs and butt.

Nikki hadn't managed to undress as quickly as I had, and the remnants of her clothes clung to her, dangling precariously. She was tall enough that she needed to bend forward to avoid hitting the ceiling, and just like me, her proportions were messed up. Her body had taken nearly all the mass from her boobs and butt, leaving them almost boyishly flat. Even with all that extra fat, her body was still freakishly slender.

We sat in stunned silence for a while before Nikki excitedly picked me up, cradling me in her hands.

"Awww, you're so adorable and squishy!"

Nikki's voice had pitched down several octaves from her transformation, and I had a feeling the opposite had happened to me. My suspicions were confirmed as one of Nikki's spindly fingers brushed against my clit, causing me to let out a loud squeak.

"Oooh, did you like that, Olivia? How about this?"

My squeaks echoed through the room as Nikki used her newly elongated fingers to tease me. God, she was good at this. It didn't take long before I coated Nikki's hand with my juices.

"Alright, I guess magic is real. It's reversible, right? I don't mind being stuck like this for a while, but I think you're stuck here until you get back to normal."

"I dunno. I think it should be reversible since the magic rearranges our attributes and doesn't mess with anything else. I bet if we measured ourselves, we would still have the same combined total height."

"You did this without knowing if it was reversible? Are you stupid?"

"It's just an attribute transfer! It's like pouring water between two containers. Besides, you said you were fine if you got stuck anyways."

I sighed and shook my head, causing my breasts to sway violently on my chest.

"Whatever. Just put us back to normal."

Thankfully, Nikki was right about it being reversible. Our bodies slowly returned to normal over the next minute. Well, almost. As I looked at my body, I saw that Nikki had stolen pretty much everything feminine from me. My boobs, my ass, my curves, hell, even my lips and hips. I could pass as an androgynous guy right now.

On the other hand, Nikki had a perfect pornstar body, thanks to the attributes she stole from me. Every step she took made her plump ass and perky tits shimmy seductively on her incredibly feminine body. All she needed now was some blonde hair to complete her bimbo look. Actually... I think I could do something about that.

Nikki hadn't told me how to swap attributes, but judging from how she did it earlier, all I needed to do was think about it.

"Olivia, I know I look amazing, but it's still rude to stare."

"Shut up for a second. I'm trying to swap our hair color."

"Aw, but I already took so much from you. Don't you want anything?"

"Oh, I'll take something from you, don't worry."

I grinned as I saw Nikki's hair changing colors, slowly fading from jet black to dirty blonde. However, that wasn't the only different thing. My grin faded as Nikki's skin also faded from brown to pale white. I hadn't meant to swap that. I frantically tried to save what little I had left, but it was no use. Nikki's hair grew down to her butt as mine disappeared, leaving me bald.

Nikki's already incredible proportions became even crazier as her body siphoned more mass from mine, much to her delight. If she had been a sex bomb before, she was practically a goddess now. But the transfer still wasn't finished. Nikki's facial features slid around her face as her face rearranged itself into a carbon copy of mine.

"Wow, this is crazy. I would love to go clubbing like this. Fuck, I sound so sexy!"

Even our voices had changed. Nikki was talking in my voice, in a sultry, breathy tone that oozed sex. Meanwhile, my voice was plain and forgettable.

"Huh. I didn't mean to give you everything, but I have to admit, you look awesome. Still, I feel like something's missing."

"Really? What's missing?"

"You can't be a bimbo if you're still smart enough to count to ten. Time to fix that!"

A vapid smile spread across Nikki's face as I took away her intelligence. Giggling to herself, she started to grind her pussy against the table, leaving wet trails of her fluids everywhere. I didn't feel any smarter after taking all of Nikki's intelligence, but I definitely felt more focused, like my mind was in overdrive.

"Cumming!"

God, it was weird hearing Nikki talk with my voice. Even as she squirmed from the aftermath of her orgasm, she continued to try and grind against the table. Did I give her my sexual urges as well? Looking down at myself, I saw that my pussy was bone dry despite the display of sheer carnal desire in front of me.

Sighing, I put my clothes back on. No point staying naked if I wasn't gonna get any action. Looking over at Nikki, I saw that she had stuffed both of her nipples into her mouth. Yeah, I definitely couldn't let her go out like this unless I wanted to babysit her the entire time.

Still, I didn't want to give her intelligence back yet. Even though watching her masturbate had as much effect on me as watching paint dry, it was still entertaining to watch Nikki wildly play with herself. Looking around her room, I found a tripod in her closet. Grinning, I set it up in the corner of her room and set my phone to record.

A few minutes later and I found Nikki's stash of sex toys, and dumped them across her floor. She was so preoccupied with sucking her own nipples that she didn't even notice until I stuck one in her pussy.

Nikki's eyes lit up as she saw the rest of the toys scattered across her room, and she wasted no time using them, shoving them into every orifice she could, moaning and grunting with pleasure.

As Nikki lost herself in a world of pleasure, I walked over to the tripod and double-checked that my phone was recording. She'd kill me if I didn't save a video for her. Satisfied that it was recording properly, I gave Nikki one last pat on the head before leaving her room.