Kaiketsu Mystery

Kaiketsu Mystery (解決ミステリー, Kaiketsu Misuterii) is sung by. The song lyrics were written by, and the song was composed by.

Kaiketsu Mystery was originally released within the game on March 27, 2019. It becomes available in normal lives after clearing Part 4 Chapter 4.3. Kaiketsu Mystery was released as a single on September 27, 2019, which can be purchased digitally on the iTunes Store, animelo mix, music.jp, mora, and Recochoku (レコチョク).