World where everyone is born male

[Sleepness4]

I think it’d be a cool story where everyone is born a male, but if you are cum on/in by another male you become a woman and if they cum on/in you again as a woman you are claimed as theirs.

 

[ElectricBlue]

Done, although not quite as you describe:

https://www.literotica.com/beta/s/songs-of-seduction-water

 

[Bramblethorn]

https://media.oglaf.com/comic/son_of_kronar1.jpg

 

[JaxRhapsody]

https://media.oglaf.com/comic/son_of_kronar1.jpg

What sorcery is that?