Kyoichiro Kaga is a 5-book series with 5 primary works first released in 1986 with contributions by Keigo Higashino.
1986 • 1 Reader • 267 pages • 4
1996 • 87 Readers • 288 pages • 4.3
2009 • 22 Readers • 3.7
2011 • 19 Readers • 352 pages • 4
2013 • 11 Readers • 4.3