Hi there. Harem has not yet happened in the game, still too early. Relationships/sex scenes are optional as follows:
- if you are not on a LI's path, through a Choice, then no lewd scenes happen with that character. If you are on a LI's path then sex scenes will happen to you i.e. not optional. Note that you will miss out on some sex scenes with a LI if you don't have a good enough relationship at that point in time i.e. affection points too low. What I will do for future versions is build in a bit more flexibility for players to have changed their mind at some point i.e. heck, I actually want to get off this relationship path, or wow, I actually want to get on this path now.
- for non-LIs at the moment something small is forced but I will build in some optionality here in future.
So I would say that right now with the game you will get exposed to a small amount of sexual content without the ability to avoid it.