I’ve never gotten into a shonen style book before but I am definitely a fantasy and scifi connoisseur. The world, characters, magic system, everything is so well fleshed out and different that it is worth getting all 12 books. The action never stops but doesn’t get in the way of the world building or character development, if anything it makes the mundane description chapters in books like Wheel of Time look like poor attempts at explanation with no effort at reader engagement.