Before & After: Naturally Sourced Protein [Futa/FMG] (Patreon)

Aya's new gym was great. They had a very personal touch to it. The only thing that was a bit weird was the exercise machine in the basement that her personal trainer insisted was only for staff. After a few weeks Aya felt ready to tackle the new challenge, only to make a shocking discovery over where the protein in her post-workout shake was coming from (and why she was getting such great results).