Thanks for your feedback!
I'm sorry to hear that you have encountered those problems on Android.
But keep in mind that if you happen to see a lot of black screens with only the game dialogues showing, then consider it not a glitch. The game currently only has 15+ CGs (aka as number of available scenes) along with 5 cutscenes, so I hope you understand the game is only on demo!
Unless you are referring to a problem where you are unable to see the available scene or cutscene during the gameplay, then we will double check the Android file to see if there are any errors that you mentioned.
If the problem still happen for the Android file, you can try switching to play on Windows, Linux, and Mac files if you have any of these three! (Except for iOS, as the game is not supported on that yet)