Very interesting way of showing the fog, was very surprised to see it animated. (And with how it was done, give off an unsettling vibe.)
The lip syncing was a nice touch as well. Although I am unsure if it's supposed to happen all the time, or only sometimes.
A nice start to setting up the story for things to come. I was saddened once I reached the end. I'm quite curious as to where you'll take the story, considering that it IS Junji Ito inspired. (The Enigma of Amigara Fault's ending still haunts me.)
I'm looking forward to seeing this completed. =3