This is real?

Kathryn notices me staring at her minimal cleavage and playfully smacks me on the side of the head. "Away team to Captain Kirk! Come in Captain Kirk! Stop being mesmerized! I know they're boobs but they're tiny little boobs." Being the perv that she is she jumps and her braless breasts bounce slightly.

I watch them bounce and look up at her pretty face as she looks down at her chest. "I mean they aren't much to look at. Nothing like Megan and her rack. Mmm, now those are some boobies." She puts the book down and holds both hands in front of her miming grabbing breasts and drooling.

I'm still kind of shocked by what I see. Not ten minutes ago Kathryn was joking about having a flat chest and now she is joking about having small breasts. What the fuck is going on here?

She waves a hand in front of me, "James? You ok? Why do you look like you saw a ghost? Everything ok? Is Obi-Wan behind me?"

"No, nothing like that. Well, something like that. Umm, something really strange I can't explain. I would say magic but it's through my phone. Could be really advanced tech?" I trail off still holding my phone in front of me.

"And sufficiently advanced tech is magic to lower tech." Kathryn says. "So what's up with your phone?" She grabs the phone out of my hand. "Did your phone die or something?" She shows me a black screen when it had just been pink and gold with an avatar of her right before it left my hand.

I unlock it and Kathryn's avatar is on the screen again. She bends over to look at it and I glance at the shallow valley of cleavage in her gapping sundress while she stares at herself on my phone. "What the fuck is that?" She asks pointing at the screen.

"I don't know! It was on my phone when I came in here with the broken book! I didn't download it, I thought you installed another dress-up game on my phone! But a pervy one because... well... that's something you would do!" It's late spring and we have been working together the whole school year with plans to keep working here together next year.

She stands up and looks me in the eye. With her short, barely 5 foot tall stature and my tall, about 6'2", lean frame her eyes are barely level with mine sitting down. "Ok, ok I only did that twice." I hold up three fingers, "Ok, three times." She rolls her eyes. "So what does this magical-slash-sufficiently-advanced-tech do? Or did? Since you seem kind of freaked out."

"Umm, well. Keep in mind I thought you put this on here. It says you can Customize girls, which is this apps sexist way of saying women I guess." I back out to the screen with the list of names, "It has a list of women you can sort by all different parameters." Her eyes widen as she reads the search terms available.

"Holy shit! What kind of fucked up pervy sex game is this? Ooh, let me play!" She goes to grab the phone out of my hand but it suddenly vibrates and a warning screen flashes up with pink and gold caution tape crisscrossing randomly over the screen. A text box pops up:

"Unauthorized user! You can look but you can't touch! This is your second strike. Third strike will earn you a Punishment!"

I pull the phone back and hold it out of reach with a long arm as Kathryn crosses her arms, "What was that?"

"Let me finish showing you but seriously, you really shouldn't touch my phone when the app is open. It umm... does things." Kathryn grumbles but keeps her arms crossed under her little breasts deliberately pushing them up knowing they will distract me. "So I found your name and tapped on it. It showed me your silhouette and I figured you must have the app too. All these options came up and since we just talked about it I tapped on the Breasts tab." Her eyes widen at the tab options and her jaw drops when she sees the list of things to purchase. Increase breast size is now a much more expensive 12 gems. I back out to her profile and tap on the existing customizations to show her I bought the cheaper Increase Breast Size.

"Aaaahh hahaha haha! That's a good one. You really had me for a moment there. You didn't make my little tits bigger, they've been about this size since I grew them five or six years ago. How much time did you spend on this little prank?" She cuffs me in the shoulder.

As she is still laughing at me I find the button for awareness and toggle it on for just her, not everyone else. She immediately stops laughing and stares at my phone before pulling her top down to look at her newly acquired breasts. "Holy shit! Frak me that actually gave me boobs!"

She stares for a few seconds before experimentally prodding and squeezing a breast and pinching a nipple right in front of my face, "Well fuck me sideways, I have boobs now!" Looking past her breasts she notices the bulge in my dark slacks my rock hard cock is making. "Oops, sorry to excite you like that." She says sheepishly as she gets the top of her dress back in order. "I was just really excited about finally having more than Mosquito bites on my chest."

I toggle her awareness off and she goes back to chuckling about my prank. Awareness back on and she goes back to excited about having breasts. I flip it off and on a few times watching her demeanor flip back and forth. I leave it on and ask her if she noticed anything strange besides having bigger breasts now.

"Nope! Did you want there to be more? This is pretty frakking amazing already!" She has no idea about her changing awareness and doesn't even seem to see the toggle buttons next to the purchased option.

She is very excited as she realizes the power of the app, "Oh the fun we can have! Who should we mess with first? Allison and whatever she's hiding under her loose clothes? Stacked little Megan? Evil Prof Schneider with her big sexy body?" Her eyes widen as she realizes something. She turns her upper body and pulls her skirt tight against her flat little butt, "Or me! You could make my butt grow like my boobs! Do my ass! Do me, do me, do me!" She jumps excitedly in front of me and the perv that I am with all the possibilities swirling through my head all I do in that moment is tracking the bouncing breasts a foot in front of my face.