Creator’s Vault: Muscle Class Chapter 31: "The Offer" (140 Images)




Hey everyone.
Quick update about the Patreon tiers, especially Tier 5.
What’s changing:
Tier 5 currently includes an extra AI video perk. Right now I can’t consistently produce videos alongside the chapter releases, and I don’t want to promise something I can’t reliably deliver.
So from now on, Tier 5 will no longer include a guaranteed AI video.
Tier 5 stays and will now be:
✅ Everything from Tier 4
✅ Voting power: you’ll help decide what comes next
✅ One commission each month: instructions will follow
If you joined for the video perk:
No worries at all. If you mainly want the image packs, you can switch to Tier 4 anytime. I appreciate your support either way.
Thank you for understanding and for supporting the project. 💛
2026-01-20 08:42:17 +0000 UTC View Post





Lana shows up outside Prof. Greene’s office after last period in a black tube top and jeans that tore the moment she forced them on. No small talk. No excuses. Just one point: she’s still changing… and someone else is using the serum.
Greene doesn’t offer another dose—she offers a lab appointment. Tomorrow. Alone.



Kira walks home bare-chested. Not by accident—by choice. No jacket. No top. Just her body, bold and unstoppable, turning the whole city into an audience too stunned to speak.
When she finally closes the door behind her, the heat doesn’t fade. In the shower, in front of the mirror, in her room with nothing left between her and the air—it’s still there. That raw, overfull tension in every flex. The thrill of Lana’s reaction still buzzing in her chest.
Until it doesn’t.
This chapter is Kira, fully on top… and starting to wonder if the peak she hit is already slipping.
Power like this never comes without a cost. And for the first time, Kira can feel gravity tugging at the edges.
Chapter’s live now.
Read it while the heat’s still rising.




Lana walks out of that bathroom a little bigger than she went in: tank riding higher, abs deeper, hips and thighs denser and it’s still not enough to erase Kira’s lead.
Back in her room, with nothing on but a light blue bra and panties, there’s nowhere left to hide from what she’s become or from the fact that it still wasn’t enough. That’s what finally pushes her over the edge: the message to Greene. “I’m still changing. And I think someone else is using your serum.”
From here on, it’s not just Lana vs Kira. Greene’s officially back in the game, and even she’s not sure she’s in control anymore.


New chapter is up: “Mirror Pressure”. After Kira’s little power play in the quad, Lana ducks into an empty school bathroom and finally has to stare herself down in the mirror.
It’s just her and a slow, quiet growth. Veins a little fuller, abs a little deeper, her top riding higher than it did an hour ago.
No huge explosion, no torn clothes… just the realization that the serum is still working, millimeter by millimeter.
She’s not bigger than Kira yet and she hates that. But by the end, she walks out with something just as dangerous: proof she’s still climbing.
2025-12-13 07:00:04 +0000 UTC View Post


New chapter is up: “Mirror Pressure”. After Kira’s little power play in the quad, Lana ducks into an empty school bathroom and finally has to stare herself down in the mirror.
It’s just her and a slow, quiet growth. Veins a little fuller, abs a little deeper, her top riding higher than it did an hour ago.
No huge explosion, no torn clothes… just the realization that the serum is still working, millimeter by millimeter.
She’s not bigger than Kira yet and she hates that. But by the end, she walks out with something just as dangerous: proof she’s still climbing.


Today we’re going back in time. Before Lana. Before Kira. Back when Mrs. Greene was just Cynthia in an oversized hoodie, hiding in the back row and experimenting with ideas nobody else dared to touch.
This interlude shows how it all really started: late nights in a cramped dorm, glowing vials on a messy desk… and Maria, the roommate who said, “Then test it.”
The first injection, the first change, the first “Hey, did my hips always look like this?”
2025-12-06 07:00:09 +0000 UTC View Post
