second puberty is a phenomenon where people will begin to start growing and changing in many different aspects. a women could become a muscle bound, amazon, futa or an absolute bimbo milf, anything is possible. this story is inspired by the artist:

https://www.reddit.com/user/KigoMan123/

from the story:

https://www.reddit.com/r/FutaNTR/comments/vgy3qh/a_sister_outgrowing_her_brother/

though this story is my own it closely follows the art and i claim no ownership of the original piece, i am just someone who wishes to share a story that i find very alluring and interesting and i hope people keep that in mind.