Manhood Enhancement

You pull up the app's interface with your free hand while Mari continues bouncing on top of you, her rhythm steady and enthusiastic. The Image Filter loads instantly, showing real-time parameters you can adjust.

Your thumb slides across the screen, dragging the slider for 'Vaginal Tightness' to maximum. Mari gasps mid-bounce, her eyes going wide.

"Oh FUCK!" she squeals, her movements faltering. "What... oh my god, you feel so much bigger! How did you...?"

You feel it immediately - her pussy clenches around your cock like a vice, suddenly impossibly tight. The sensation is overwhelming, like she's squeezing you with every muscle she has. She whimpers and tries to keep riding but the increased tightness makes it difficult.

"Holy shit, holy shit," she pants, grinding down slowly instead of bouncing. "You're stretching me so much!"

You're not done. You navigate to the self-modification panel - the one Candy keeps suggesting you explore. Your cock throbs inside Mari's transformed pussy as you adjust your own parameters. Length: +3 inches. Girth: +40%.

The changes ripple through your body instantly. You feel yourself growing inside her, lengthening and thickening. Mari's eyes roll back in her head.

"OHHHHH FUCK!" she cries out, her voice breaking. "You're getting bigger! You're... oh god, you're so deep!"

Her pussy struggles to accommodate your newly enlarged cock. You can feel yourself pushing against her cervix now, filling her completely. The combination of her impossibly tight walls and your enhanced size creates friction that borders on painful - but in the best possible way.

"Too big," Mari whimpers, but she doesn't stop moving. "You're too big but it feels so good! Fuck, fuck, FUCK!"

Your phone buzzes with a message from Candy:

"OMG you just modified yourself!! See how EASY that was?? Doesn't it feel amazing?? You can change ANYTHING about yourself now! Your body is like, totally yours to customize! "

Mari collapses forward onto your chest, her modified pussy spasming around your enhanced cock. She's barely able to move now, just grinding weakly.

"Can't... too much..." she gasps against your neck. "Gonna cum... gonna cum so hard..."

Another buzz:

"This is just the beginning babe! You could make yourself taller, more muscular, more handsome! Or... you know... You could try the OTHER modifications! The ones you've been fantasizing about! Just once! Just to see! ✨"