Dev used InnoSetup to compress a bunch of stuff (probably trying to reduce piracy). BUT - they only include the 32-bit RenPy application as well as changing the Windows Malware Protection installation (that is why it requires elevated permissions).
View attachment 2591931
I have extracted the game files (using InnoExtract) and will share a non-InnoSetup version in a little bit. Going to take awhile as my VM has bandwidth limits (that I am too lazy to turn back off).
UPDATE: Buggy as usual, crashed a couple of times but is playable without using an existing save.
UPDATE2: Here is the version without InnoSetup (so no admin permissions or registry changes needed) -
PixelDrain