Facesitting Ass Expansion

Josh West was excited, but upon seeing his boss enter the building, realized he had one last batch of changes to make. She had a big ass, and it was attractively shaped, but he realized he could go even further in making women's butts look better. With that in mind came another barrage of changes dealing with butts, first on the health front.

• Cancer in the ass or around the ass never happens
• The bigger a woman's ass is, the healthier she is
• Anal sex never causes prolapse
• Women with massive asses have superhuman core strength
• A woman's butt muscles increase proportionally in strength to the size of her ass

He did realize he had given a lot of women superhuman strength, but shrugged it off as he went onto his next category. Josh West was far too horny to fully think through what he was doing to society, and that continued with his next set of changes.

• The bigger a woman's ass is, the more she enjoys anal sex
• Women love their butts being touched and groped
• Women's asses are elastic enough to stay tight no matter how often penetrated
• All women can cum from anal stimulation
• All women love feeling a man cum in their ass

These changes only made him hornier, but he managed to control himself enough to make the last set of changes, which was another round of health changes, some housekeeping similar to his breast enlargement changes, and... something for a fantasy he didn't admit to having before.

• Plastic surgery for butts is looked down on and grants no health or other benefits.
• Butt reduction surgery is considered barbaric, and is a crime punishable by time in prison, if not worse.
• Once a woman turns eighteen, her butt cheeks are always the same size as each other
• Butt cheeks never shrink or sag, and heal back to their original size after all injuries
• When a woman sits on a man's face, her ass and hips expand to cover his face, and this growth is never lost.

Facesitting was a fantasy Josh West had, but didn't want to admit to himself, much less anyone else. With the power of the app, he could explore that fantasy without guilt, and get women to have the kind of big butts he wanted in the process. Knowing he didn't have much time left before he really needed to enter work, he did a couple of remaining changes to ensure his fantasy worked out:

• Men never asphyxiate from having their face sat on by a woman
• When a woman sits on a man's face, she will remove any clothing or garments covering her ass beforehand
• Women love sitting on men's faces

Feeling he had done enough for a bit, Josh West put away his phone, and went to his new job in the world he had created. Less than an hour ago it was just a tedious internship on the road to getting an actual job, but it had become something else. Once he got inside the office, he saw all how his changes affected the women he was working with.

Every woman had massive breasts and really, really big butts. Their asses were never gross or flabby either, they were always so attractively shaped, and were firm in the best way. It all combined together to make everyone have a pleasing hourglass that, before Josh's changes, would've been nothing more than a horny fantasy, if that. While he admired all this new female flesh though, he noticed one other major change: All the women were incredibly confident, and assured of themselves in a way that never happened on Earth. Josh himself when he started his internship wasn't only given tasks by women, but also felt a level of open lust from his female coworkers that he had never seen in his prior life. This all culminated when he was called by his boss about something and...

He came face to face with the woman from the bus. She gave him a grin that showed he was exactly where she wanted him to be. "As I said, we're going to have a lot of fun today..."