Haruta is handsome and smart, Chika is bright and naive. When they were children, they were friends until Haruta's family moved away while he was in the 3rd grade. They meet again during a high school entrance ceremony. After all of these years, Chika is eager to join the wind instrument club. Due to an incident, the wind instrument club is about to be disbanded. Chika can't give up the flute so she attracts Haruta to her side and tries to recruit members from the wind instrument club. The group attempts to solve various cases taking place at their school while they plan to take part in a contest.
Shori Sato
Haruta Kamijou
Kanna Hashimoto
Chika Homura
Yuri Tsunematsu
Naoko Serizawa
Hiroya Shimizu
Kaiyu Hiyama
Koki Maeda
Keisuke Katagiri
Takuma Hiraoka
Kyoji Miyamoto
Moka Kamishiraishi
Taeko Yonezawa
Himeru Nikaidô
Wakaba Noguchi
Kotaro Shiga
Toshio Iwai
Keisuke Koide
Shinjiro Kusakabe
Sei Shiraishi
Emina Kondo
Natsumi Maebashi
