Great concept that is only held by a few technical issues, I loved the B&W atmosphere, and the storytelling as well, it has a very eerie vibe, it did not spook me but the vibe/setting was great.
I faced the same technical issues as everyone else, mouse movement is too fast (had to lower sensitivity in my own settings to compensate), and there is no smoothing of the camera movement, which makes it jittery, and the link to the theme is not very strong.
Regardless, I can see the big amount of work that went into it, good job and I hope this was a good experience.