No it's good - the hint system, with the star/eye/talk bubble, works fine and it progresses logically. Some events take a day or two to do the next step, but there are plenty of good sex scenes, and the renders are good too.
Like a lot of games there can be slightly annoying repeat scenes/conversations that do not acknowledge the most recent event.
For example the fact that Julia still insists you don't watch her change before a tutoring session after you have had all sorts of sexual contact is strange.
Actually it is strange that the physics lessons scenes options are still there regularly several times a day after the exam results.