"Mhhr," he grumbles, a wrinkle of his nose. "A stupid war, back a thousand years ago. People used magic before machines started to be built, and the people who could use magic and couldn't started bumping heads. A war broke out, and the machine side was winning, 'til the summoners left made a giant fiend that went around destroying everything."

He waves out a hand. "Long story short, a bunch of people made everyone believe the fiend was punishment for using machines, so they outlawed them, and anyone who used them were treated bad. Which were an entire group of people who didn't believe their religion."