"Cased Closed" Spin-Off Manga Solves Mysteries and Teaches History

The volumes are being released three at a time, with the first wave of publication on November 29, 2017, and the final batch hitting book stores on March 22, 2018.

Each volume covers one period of Japanese history from the Jomon Period (14,000 – 300 BCE) to the Showa Era (1926 – 1989 ACE).

Each volume retails for 980 yen ($8.80 US) plus tax.