I'm not going to include a love hotel, as yes, the game was intended to have sex in it, as they are still quite young. Although some statistics say that Japanese women have sex before they are 17, they have been in an all girls school for some of their lives, so through puberty they would have had less chance to see guys. Sure, they will have experimented on their own, but certain fetishes will still need to be found out, and there are few people (or so I've seen) that like to jump into just trying out new fetishes; I'm sure they'd have all the normal feelings wondering if it's normal etc etc.