Actually I think that I can give you the
advice for achieving more ratings.
Add with the next update little
intermission. Something like showing “Chapter II” on the screen, striking it out and showing “
ad/advertisement”. Chosen
girl appears (you can give patrons the right to decide or make a poll here; it simply should be the most popular/desired girl) and according to her character “says” something like: “We’re halfway through the story and a quarter of the content. Don’t worry, it’ll make sense. Most important is, have you enjoyed it so far?”
The player can choose “yes” or “no”.
If “no”: “I see. I hope that you still give me and other girls … (and Classy Lemon) a chance to convince you otherwise. See you.”
If “yes”: “Marvellous! Where did you get it?”. F95zone choice, each other site you put your game and one choice for another sources, if anybody puts your game somewhere without your knowledge.
After choosing the option the short tutorial (for dummies) on how to post a rating on the chosen respective site should appear.
(optional) You can add hyperlinks to respective sites also (for very lazy people), but it can be seen as pushy by some, so up to you, if you want to risk it.
Commentary:
Whatever girl would say, it should be seen as the truth. If you are less than a quarter through the story, you may want to wait a little longer, before adding the ad.
If you feel really ambitious/generous you can make 6 ads and give the player the right to decide which girl will present the ad.
The exact execution is up to you, as your humour is more appealing, but I think that you got the raw idea already