Bill didn't know what to think when the mysterious man gave him the special app on his phone. MC is what it said and it had no description. The man promised it could change his life around. The man did give him a set of instructions though.

1. Select an individual and you can slowly change their personality and memory.
2. The app only has memory space for three individuals.
3. Instructions should be clear and should make minor changes only. Too drastic of changes too fast could cause the subject to have issues.
4. Instructions can build off of each other to make more major changes over time.
5. The app should only be used once per week on each subject.

Bill went home that day to his three bedroom apartment on the top floor and walked in forgetting all about the app. Doing what he normally did when he got home, he sat down and played the latest fighter game.

Then his roommate Heather came home. A fiery redhead with hair down to her titanic ass. She had a beautiful face spotted with freckles, but that wasn’t what interested Bill. Her tits were a round and perky DD cup, but that also wasn’t what interested Bill. Her stomach was trim and she had the hint of a six pack, a nice 30 inch waist. But that wasn’t what interested Bill. No, what interested Bill was Heather’s 50 inch rear. He knew she went to the gym every day and would work out, that ass was easily mostly muscle, but it jiggled so nice. He just wanted to bury his face in that cavern of a crack and inhale, tongue punch her tight puckered hole, make her squeal with pleasure as he shoved his finger in up to the knuckle.

His fantasy was interrupted as he heard her say, "Ugh, I don't understand why you just sit here and play videogames all day.”

She walked by in her tank top, and her yoga pants stretched across her perfect ass.

“And stop staring at my ass, fucking pervert.” Heather tossed her keys on the table next to the door and began to head towards her bedroom not even looking back to check if Bill was actually staring at her ass or not.

Actually Bill had resisted the urge this time, although Heather wasn’t exactly wrong for saying it. Bill stared at her ass constantly, and she had called him out on it numerous times.

Heather came out in the living room and plopped down on the couch. “Seriously, I’m turning the channel to something to watch. I’m not sitting here and watching your lazy ass play video games all night.”

Without even asking, Heather grabbed the remote and changed the input to a streaming service and began trying to find a show.

“Heather I was on the final boss! You can’t… ugh.”

“Just pause it or whatever, save it, I don’t know.”

“You can’t just… this game doesn’t allow pausing. The creators wanted it to be realistic. Whatever, doesn’t matter, I’m sure I’m dead now anyway.” Bill tossed the controller aside and began to watch the tv as Heather mindlessly scrolled through shows.

That’s when Bill remembered his app.

“Hey Heather!”

“Ugh, what loser.” She turned around to glare at him and he had his phone out and had hit the start button.

A screen appeared saying, “SELECTING TARGET.”

Bill pointed the camera at Heather and the screen immediately switched to another that said, “ANALYZING TARGET.”

“Ugh are you taking a picture of me. Fuck your more of a pervert than I though. I did not give you permission to add me to your spank bank.” Heather said her temper rising.

Shit, Bill didn’t think the app would have to load like this. He saw the loading bar creep across the screen.

“Seriously, Bill this is getting to like, creeper level. Get that camera out of my face.”

“It’s okay, I’m not taking a picture I promise.” Bill stuttered out as the bar finally said complete. The screen switched again and showed a picture of Heather’s face.

“MAKE SUGGESTION NOW.” Flashed across the screen.

“Finally.” Bill said. Then he directed his attention to Heather. “You will begin to be nice to me. You also will become interested in video games. In fact, the more you watch me play the more interested you get. You also won’t mind me touching you, a high five, a fist bump, and eventually, by Friday you won’t even mind if I slap your ass in a playful way.”

When he hit the end button on the phone she seemed to snap out of a trance he didn’t even notice she entered. She looked around then saw there was not even a show playing, “Fine, you can play your stupid game. What, is it called anyway?” She asked turning the tv back to the input with the game system.

Did it work!? He couldn’t tell but he decided to tell her and find out.

“Uhhh Prize Fight Five.” Bill ventured hesitantly.

“What do you do in it?” Heather asked actually appearing genuinely interested.

“You pick a character and fight. There is a storyline, but I won’t bore you with it.”

“Oh, well… I guess you can play. But don’t expect me to let you do this all the time, okay. I just… can’t find anything to watch. And don’t think I forgot about the picture you just took of me. You better fucking delete it, pervert.” Heather said, crossing her arms under her ample chest, making her DD-Cup chest look more impressive.

“Of course it didn’t work. Get a strange app on your phone downloaded by a strange man and actually think it would work…” Bill muttered to himself.

“What are you muttering to yourself about?” Heather asked as Bill started the game back up.

“Nothing.” Bill sighed as he tucked his phone back into his pocket not seeing the screen say, “SUGGESTION COMPLETE.” He picked up his controller and began to play. Heather sat watching, completely uninterested as Bill beat opponent after opponent.

Finally, she stretched and got up. “Hey, I’m gonna make some dinner. Not that I care if you eat or whatever, but, if you want… I can make some for you…”

Bill had to process what was said and when it finally registered he lost the current fight he was on. “Did you just… offer to make me dinner?”

“What, no, I just… I’m making myself a sandwich and while I’ve already got stuff out I didn’t know if you wanted one or whatever. I’m not _making _you dinner.” Heather said. “I mean, I can’t make my roommate a sandwich without it being a big deal?”

Bill didn’t even notice as the second round of the fight began… she was… being nice… well nicer. Did the app actually work!

“Uh, yeah… I’d love a sandwich. Can you put mustard on it please?” Bill wasn't sure how far he could push things, he actually didn’t like sandwiches but. Heather, the only person to reply to his roommate ad. Heather, the woman who moved in and did nothing but treat him like shit since she did. Heather, the woman who actually made fun of him constantly behind his back and to his face. Heather, the girl with the ass of his dreams… was offering to make him a sandwich.

“Yeah, I think we have some mustard,” Heather said nonchalantly.

Bill had lost the second round by the time he looked back at the game. How far how fast could he push this. He knew he couldn’t use it again for a week. The stranger was very clear on that. He also had said minor changes only and not to move too fast. Bill’s thoughts raced as Heather brought his sandwich in on a small plate. She sat her hefty rear down next to him and tucked her feet under her.

“I lost again… let’s watch a show.” Bill said, not wanting to rush her interest in the game. If this app worked, that would come over the course of the week.

“Okay, that’s fine. But don’t pick one of those nerdy ass shows you always watch,” Heather said taking a bite of her sandwich.

“Okay. How about a horror movie?” Bill ventured.

“Ugh, as if. Fuck for a second I thought you were actually cool.” Heather said rolling her eyes. But she shot him a side glance and a half smile.

Was that… her being nice? Bill couldn’t tell but they settled on an action movie and began to eat in relative silence.

As the movie finished Heather stood up and stretched again. Her ass jiggling slightly as she bounced on the balls of her feet, her hands above her head.

“Alright loser. I’m headed to bed. I made dinner, you clean dishes.”

With that Heather plodded off to her room leaving Bill to think about everything that had just happened.

That whole week went so differently. Heather would come home from the gym and instead of storming to her room, she would come over and sit with him and watch him play.

The more he watched the week unfold the more he got ideas about how to proceed.

Friday finally came and he played. He was on a particularly hard boss and had died several times. Heather looked genuinely disappointed. When he finally won he hopped off the couch with Heather.

_It’s all or nothing. _He thought as he highfived his sexy roommate and then brought his hand down to slap her giant ass.

She jumped slightly and giggled. “Great job! I knew you could beat him!”

The realm of possibilities opened for Bill as he fired up the app for the second time.