Harry Dresden is a rather unconventional wizard, in a rather decent set of urban fantasy/detective novels. He has no significant connection to Japan, and indeed his magic is very strongly Western in origin.
So where did the glowing runes on his staff come from?
The paperback edition of Dead Beat doesn’t seem to name the cover artist anywhere, but whoever it was decided that the English loanword マトリックス (“matrix”) made a dandy set of runes.
[oh, and I just noticed that Amazon has a new “Amapedia” site…]