Although Kaneko did the original design, this art appears to be brand new, made specifically for the game as unlike with Ahriman , this one is not known to have any preexisting Kaneko sketches and is instead based on the original game sprite. Due to this, it is unknown who did this piece of art.
Though speaking of Kaneko, I am unsure of if I should upload his new art from his current project. (It is a game that makes use of AI art that he seems to fully embrace. *sigh* While there are hand drawn originals in there, I feel mixed in regards to my own morals.)