Thank you so much for playing my game! What you're experiencing is actually the end of the current game Demo.
At the moment, this game has received no user feedback at all, so I've judged that it's currently quite insufficient. As I mentioned on my main ci-en blog, I've temporarily paused development on this project.
I'm currently developing Luna's Escape for DLSite, and once Luna's Escape is completed, I plan to return to Hina Cast: After Dark with improved techniques and skills I've gained.
Thank you!