I hear music but nothing shows up, just black screen

Tried to launch it, the screen is black except the mouse icon. I can hear music playing and move the mouse, but nothing else shows up. Any ideas or fixes?

I have read the novel and I already know whats in the story so far and I must say it was a great read, seeing pics really reminded me about the parts what I have imagined so far. So really well done. Can we expect more story with this ? So we can finally see what will happen after the novel finished?...

Hi, I want to change the volume on the voice vs the music in this game. Like, I'd like a separate volume slider for the VA work and one for the music. Can that be done in an update? Thank you, ~ Paar de Finche

It sounds like book/comic book but review mentions voice acting