Hello! As the game is still in development, we can't give you the exact number of how many CGs there will be in total. However, as a very rough estimate, we're planning 30+ more love interest CGs in total, so about 10+ for each not including variations.
There will also be CGs outside of the routes, but there are no definite decisions regarding the amount yet and which characters they will involve. We will definitely update this in our features list once the game is further progressed~ Thank you for your interest!