Technomancy 101

Kento: Technomancy? Is that anything like "necromancy"?
Kit: Actually, I think it's a play on words... a pun of "necromancy"...
Kento: like "Cat Fancy"... or "Bill and Nancy" or...

Technomancy - Technological magic, generally involving magically powered devices
and gadgets.  I believe the author is referring to his magic as programing
idea.