Update and Fix on July 27, 2023

Here's the situation. Some friends who are still using low-resolution devices complained that they couldn't fully experience the game. So, I've added resolution settings.
Currently, there are two supported resolutions:
1600x900
800x450

Additionally, bugs have been fixed, and a guide has been added.

If any friends need a larger resolution, please input "123123123kirA" in the test version and select the Steamsh branch.

Thank you.