Simplistic, yet layered background, distorted figure, 1 color tone but heavy use of natural shadows, not to mention the fact that it's all flesh. This is some Zdzisław Beksiński type good shit.
It does have some things in common with .flow, with the empty cityscapes and the use of flesh blending in with architecture.
I think why his stuff is so creepy, at least for me, is that there is a sense of normalcy in them in that there is a sense of calm, rather than anger or horror.
It feels like the audience is an outsider to this bizarre land, but not a land in which its explicitly hostile.