1. If the game shows flashing blocks or flickering background images: save your progress promptly and restart the game to resolve the issue (if one restart doesn't work, try restarting again).

2. If the game freezes after completing all investigation points in the 'Investigation' system: restart the game to resolve the issue.

3. If the game crashes or shows a black screen upon opening:

This is due to incompatibility between the Ren'Py engine and your operating system. For detailed solutions, you can refer to this Bilibili post: \[Ren'Py engine games white screen, unresponsive, or crash issues solution - Bilibili] https://b23.tv/IgKChXW → If this post does not resolve your problem, you may need to play the game on a different device or request a refund promptly.

Before purchasing the full version, it is recommended to try the Demo first to see if your operating system can run the game properly.

If the above steps do not resolve the mysterious bugs you encounter, you can provide feedback through the production team's accounts on various platforms.