OMG! It's been a long while! sorry I missed this reply, I guess I somewhat missed the notification...
I'm really glad you like and enjoying this little visual novel, thank you :3
I went to a place near a mountain and recorded the BGM, the ambient sound, it's playing in the whole game, and using Bfxr
to create the sound effects, it's a good and easy tool for making 8-bit sounds effects, really comes in handy.
Hope this is helpful!