Jeff pulled up the profile for his sister Sara again and began modifying the stats as well as his own. Selecting her breasts he made it to where she was unaware of your existence then got to work modifying his own stats.
You made it so the changes would be pleasurable, also allowing yourself to hear smell see and taist. You also added in that you could grow as large as you want, and lactate milk without draining anything from her body, with her being entirely aware of the changes. You also set the duration to one week. Finally you hit enter.
The first thing you felt was your arms and legs shrinking. They become much pudgier and fat retreating into your torso, next you felt your face stretching over your body as everything in the room grew around you, you felt your organs melt away into nothing but mammary glands remained. Your nerves spread across your body your clothes clumped around you, your body split in two becoming rounder and rounder with each passing minute, you felt more and more pleasure as the fabric of your shirt rubbed against your enlarging areolas. Your bones and organs where now gone, you where now a pair of boobs sitting in a chair.
Suddenly you where teleported somewhere dark, tight, and sweaty. The only thing you could see was the fuzzy outline of one of Sara’s friends through her school uniform shirt, she hadn’t arrived at school yet. Your view bounced up and down with each step she took rubbing your erect nipples against the inside of her bra. You couldn’t resist expanding just a bit to get more surface area. You pressed even more against the bra, the hooks in the back straining to contain your mass you where now atleast a whole cup size bigger when suddenly Sara stopped and being messing with her bra. You felt her delicate hands dive in front of you and hoist you up experimentally testing your weight.
“Hey Grace do my boobs look bigger to you?” Your sister asked.
Grace leaned in close giving an experimental grope that send a shiver of pleasure all throughout you and Sara’s shared body.
“Seams that way Yea.” Grace responded standing up much to both yours and Sara’s disappointment.
“Looks like you need a bigger bra again.” She said “You wanna go underwear shopping after school.”
Sara let out a groan and said...