Yennefer, Triss, Ciri, all eventually working as whores, but they all have boyfriends (BUT NOT GERALT, it's not believable for Geralt to ever get cucked. Geralt wouldn't even exist in the world and he'd never be mentioned).
The most depraved things would happen to Yennefer, Triss & Ciri, while they're boyfriends are destroyed, verbally & mentally abused, eventually becoming cucked and bearing witness to their beloved girlfriends debauchery, watching as Yenn, ciri & Triss get fucked by tons & tons of guys, being filled to the brim with cum and even being pissed on eventually. Just complete degenerate whores.
Explaining all this via story would be challenging though.
Yennefer, Ciri, Triss, NTR, Cuckold, Interracial (optional), Sharing, Whoring, Prostitution, Male Protagonist, Urination, Verbal & Mental Abuse, Whoring, you know basic stuff. You could make the NTR optional, but you'd have to have at least 10 years of software dev experience and 5 years of 3d rendering experience in order to minimize the time to make both paths.