隠の王 [Nabari No Ou] is a 12-book series with 12 primary works first released in 2005 with contributions by Yuhki Kamatani, Alethea Nibley, and Athena Nibley.
2008 • 1 Reader • 205 pages • 3
2009 • 1 Reader • 193 pages • 3
2011 • 1 Reader • 182 pages • 3