I just finished the demo for this game, and I think you'll find the story behind the art interesting.
After seeing a playthrough for "Bendy And The Ink Machine," I was inspired by its unique art style. I had already written and coded a story with RPG maker, but the default art wasn't what I felt the story needed.
So I made my own.
I used only a box of Prismacolor Watercolor Pencils, a felt-tip pen, along with a normal pencil for sketching. If you guys want it, I might upload the art directly, but otherwise the only way to see it is to play it ;).