R9 does not continue the main storyline, the things that have been added/changed/fixed are included in the post (and changelog within the game's archive).in the end I couldn't resist the temptation and bought the r9, but I have a question in this version, don't you follow the story? It does not let me do anything apart from the scenes of the brothel and demeter, also there are 2 galleries that I have not been able to unlock the 50 and 57 I imagine they are due to the achievements because I cannot do anything else, you explain how to unlock them.
50 and 57 are newly added CGs added to the intro, one of the changes I have made on R9.
With the 57 requiring you to pick "It's not that..." on the first choice.