The day of the district contest has arrived! When Haruta goes missing, Chika goes to look for him and runs into a writer who’s interested in Mr. Kusakabe’s past. Can…

Mr. Kusakabe has collapsed from exhuastion! To help out Mr. Kusakabe, Chika and Haruta investigate the mystery behind the Fujigasaki High School brass band club advisor’s suspension and the peeping…