i think I wrote in a very unclear way what I wanted to say and for that, I apologize.
the game will not be mainly NTR! there is no main fetish.
but if the community wants to have ntr or netori, I am not opposed to writing a path.
now looks better
about mind control/hypnosis. I just forgot
I will add it to the list.
There was no confusion on my end, you had already made it clear that this was going to be a game with community input where one can customize their experience. That was why I had gone "well if you are" and followed through with listing the type I would like to see.
Really though based on the premise of the story itself I would say there are some core fetishes, the main one being corruption. The main character may mean to save his kingdom but that does not change the fact he has the heart of a sex demon in him, the soul of the sex demon possessing his body, and is going to become able to draw upon sex demon powers which is typically corruption, mind control, and body modification aside from stock standard magic.
In an all power corrupts kind of way he would be drawn into a whirlwind of sex and lust from the temptation of using such powers on others. Riding through a village on the way back from a battle, spotting the "village flower" a beautiful girl the likes of which stimulates his enhanced libido and growing incubus instincts forcing him to choose between his morals and his instincts that demand him to take her, to claim her, to breed her, to make that flower bloom lewdly and add her to his collection back at the castle be it under the guise of being a maid or openly as a concubine to serve his growing voracious sexual appetite.
Whether or not that village flower already had someone she loved or if it is brought up at all vs being left vague would be something determined by if you got the NTR tag turned on.
Though let me explain something, NTR is sorta like an over-type that covers 3 sub types: NeToRare, NeToRase, and NeToRi.
Netorare being the obvious girl gets stolen from you, Netorase is you like seeing others fuck your girl (the female equivalent being cuckquean, the girl likes seeing you fuck other girls), and Netori is you like being the one stealing the girls.
One thing you can do to help people who generally do not like Netorare is to put in the capability to Netori back the girl that gets stolen.
Example would be: you lost a battle (your characters fall back) and one of your love interests gets captured, over the next x days she steadily gets fucked by an enemy commander until she gets corrupted and turned into a succubus/slave too busy drowning in sex to care about you (which is where most netorare would stop, she would only ever be an enemy character) but if your sex skill stat is high enough you can defeat her in combat, capture her, and then fuck her into submission to swap back to your side.