IDEA Infections + sexual infections [and no i dont mean our std's]
the idea is you could earn sexual infections like std hyper sexual [this turns a person who you breed into a person who no longer can control their sexual desires they always feel hot and want to have sex]
std feminize simple it turns girls into subs and males into femboys > peace boy > futa > females
each time you cum you make them move to a diffirent type
you could give yourself the std dom while being a submisive to turn everyone you fuck into a dom
the story maybe theres a slime that holds lewd std's and she finds you the player they then offer you these std's if you help her take revenge against someone who burned her and generally tortured her
she will grant you the ability to choose if you infect someone and which infections that are used on you cumming she grants you say the dom or sub trait and asks you to teach them a lesson
the torturor will become 1 of the genders of your choosen as this person is a random npc with the torture tag
you could also add 1 npc per gender but i think it would be more personal tho a bully gang could work to