This was a good one, but it didn't have as much action. While it did wrap up the arc of Volumes 1-3, Volume 4 was more about the past, and storytelling, with the majority focusing on character building and background stories. The entirety of the middle chapters was a flashback to the years of training that the main characters went through. I found it very interesting, if not overly exciting. The author did it perfectly though by giving us a fully realized action arc to get us invested before delving in to all the technical aspects of the world he created. Well done sir! On to Volume 5!