Spin-off short story of the "Senritsu Kaiki File Kowasugi!" series, which is set after "Kowa Too!" FILE-01.
Release Date: January 29, 2012
October 11, 2013
October 10, 2013
October 30, 2022
December 06, 2006
November 01, 2025
May 02, 2016
Invalid Date
March 03, 2021
April 28, 2021
June 02, 2021
July 02, 2021
August 04, 2021
December 03, 2021
March 02, 2022
May 04, 2022
June 03, 2022
September 14, 2011
October 31, 2022
March 10, 2023
August 22, 2023