Both. It depends on which girl you go with. Charlotte will have public sex. Ava will be what you probably what you expect it to be (if you've read her story). Ella will stay pretty vanilla, but she'll add music to the sex because music is so important to her (she might also eventually dabble into some bestiality due to her affinity with animals, but I'm currently still consider if that's a good idea or not).
Other kinkier things include: An unlockable fetish for the main character that makes her happy each time she takes something in her vagina/ass that is bigger than the current 'biggest penetration' in her notebook, a lot more unique sex toys, a glory hole storyline, 'who can cum the quickest/hold it in the longest' competitions and more. Keep in mind that all of these are currently just ideas and some might never see the light of day.
If you're already looking for a bit more kinky content for this game, I'd suggest checking out the 'Mod' section on this website (it was the top mod when I noticed it earlier today, so it probably shouldn't be hard to find).