overview make it sound like you can "avoid" ntr by not having a relationship with the cuck ... ><She's gonna have sex with all the people that aren't her boyfriend
(°△°)
the setting feel wrong, aim of the elf is to go back home, why would she start a serious relationship in that case except having a excuse for cheating prostitution ?
don't anwser we all know elf are degenerate that end up with more dick inside them than the number of days of their lifespan .... sometime on just one day Oo (and i don't specify gender, in the "serious orc" even the male end like that ... )
edit : only good reverse isekai h game i remember is kukoro days ^^ :3