Hey Meowpixel! Thanks for your reply.
The unfrozen buttons are a known issue with an unimplemented solution, but thanks for telling us!
I'm the composer and sound designer for this game, so I'm touched you especially enjoyed the soundtrack, and Shiragiku will sure be glad to hear the same about the visuals. As for the whistle, I really did went for striking and intrusive, without really considering how often the player would have to listen to it. Thanks very much for the much appreciated feedback! :-)

