Board Thread:Questions and Answers/@comment-24851346-20140503125209/@comment-25035274-20150907201304

Technology level is actually something of a mixed bag, according to KC in the Kenkou Cross Q&A. There are areas where things are at a medieval level, but there are also areas that are at a more Victorian Steampunk technology level. There are also at least a few places in the world where advanced magical technologies exist, though KC hasn't specified exactly what those technologies are.

In other words, an author can legitimately get away with just about anything from swords to magic lasers; from trebuchets to mana bombs; and from horseback to car to magic flying bubble or magic-powered ride armor. Every last one of these things is available, canonically. It's just a question of the personal preferences of whomever is writing any specific story.