As far as I can tell, Nantala Kantala is a Japanese illustrator, and/or anime artist.
I only have this site to go by, and Google Translate has been of little help. I did find, however, that the characters to the immediate left of the top image are links to other images.
I’m even unsure, as I often am when encountering Japanese names on the internet, which is the artist’s surname (or if it’s a handle or pen name).
I like the work, though.