Hmmm. Maybe download from a browser instead of a dedicated itch app?
I also know that the game sometimes gets falsely flagged as a virus, so it could possibly be a firewall/Windows Defender issue? If so maybe you'll have to make an exception for the game to not get flagged.
Otherwise idk, because as I said it works on my different computers and I even tested it on my friends' computer to double-check. So it has to be something on your end. You can give me your specs, but honestly I'm not the most technically-minded person (the code to this game is basically held together by scotch tape and hope lol), and Googling your specs and issues with itch.io downloads or running Ikemen Go would probably be more productive.