I found these on a CD that was given to me with the comment, "There's some Japanese stuff on this one." The files are dated 2001 and likely came from a USENet site. I suspect the artist and images are Chinese, rather than Japanese...but I've been wrong before... Any information on these would be welcomed...
The text in the images is virtually unreadable, but is definitely in Japanese.
I believe the artist's name is Muroi Asaji.
EDIT: This may be a link to what you're looking for. Inuya aigando appears to be the title of one of his works; your images may have been taken from it.
http://aigando.blogspot.com/p/blog-page_97.html
Base +32, fernendoff +8, Lostalgia +8, Chiselbit +6