I totally agree with Archangel226 I just started getting into visual novels and I happen by chance to try this one. And I really got hooked. Since finding out that there will be no more story I have gone into a deep depression.
Have you thought about continuing this vn along with writing the book. I would think the story, along with the characters, and their interactions would be pretty much the same. All you would need to do is add the visuals. Of course I make it sound so easy, but I am sure it is not. This would also allow to use both formats to test ideas and really see what works best when it comes to how one will visualize your story.