Harem games that include NTR content are basically just cuckold games:
In the romance route (slow-burn type), the heroine pretends to be a pure and holy nun (the protagonist can't creampie her, can't force her, can't fuck her hard—basically, this isn't allowed, that isn't allowed).
In the NTR route, the heroine switches on her slut mode (allowing other men to creampie her, abuse her, humiliate her). It's always this same clichéd, cookie-cutter script.
Who would like this pretend-pure-nun romance character? Once you've played the NTR route, and then go back to the harem route, you'll find that woman pretending to be a pure nun absolutely disgusting.
Optional NTR harem games? There was never any choice to begin with—once NTR content is included, it's decided: your romance character will become even more slutty and submissive in the NTR route.
In the romance route (slow-burn type), the heroine pretends to be a pure and holy nun (the protagonist can't creampie her, can't force her, can't fuck her hard—basically, this isn't allowed, that isn't allowed).
In the NTR route, the heroine switches on her slut mode (allowing other men to creampie her, abuse her, humiliate her). It's always this same clichéd, cookie-cutter script.
Who would like this pretend-pure-nun romance character? Once you've played the NTR route, and then go back to the harem route, you'll find that woman pretending to be a pure nun absolutely disgusting.
Optional NTR harem games? There was never any choice to begin with—once NTR content is included, it's decided: your romance character will become even more slutty and submissive in the NTR route.