hmmm ok so how about you intro a new oc that comes in after the events of nishy that comes in to investigate something they eventualy meet nishy and find out shes maybe cursed by a unholy lust
this could also end up with nishy as a pet to this new girl who comes as a futa [aka perfect fit for nishys desires]
its up to this new oc futa to find out whats going on and to stop or even slow the curse in the new game the monsters will activly hunt all the girls and the kingdom is locked off untill she finds out how to atleast slow the spread
she could be apart of a inquision and as such can setup outposts around the area to slow the horny creatures spread
we could even stop by nishys place to recruit her or even drink some of the gifts she provides that can also provide buffs like getting harder to fight new hardend enemys so she dont get crushed
to even water breeder drinks
to fight enemys in the new games you would need to do something like witcher and prep to fight the right enemys you fight them by making them get weak off your seed and when they get weak from you jerking off and being sneaky you can then walk up to them and breed them this cures them and you can sell them to either nishy which increases your lust/darkness
or sell them to black i think who is the breeder
to get none
or sell them to the outfit maker to get pure energy