I don't know the artist name but it definitely isn't shubesuta, the website is different and the style is different, though a bit similar in some points.
I haven't taken some of my time to upload the rest but I'll try to make up for it uploading some right now.
By the way, this one pic is number 18 if you start counting 1 from the parent, just in case you want to organize them the way they are in the artist's website.
And I must take back what I said about shubesuta and this artist being a "bit" similar because they are VERY similar looking at it, I just doubt it's the same: this is shubesuta website : http://homepage3.nifty.com/mitsuke/