Three former middle school friends who reunited after 37 years to pursue the mystery behind their former club advisor's disappearance.
Takashi Sorimachi
'Yun' Yuta Yoshii
Nao Omori
'Chen' Hajime Fujimaki
Kenjiro Tsuda
'Kinpo' Kisuke Kikuhara
Mai Kiryu
'Matilda' Michiru Miyashita
Riko Fukumoto
Hakuba Nishino
Noritaka Hamao
Tsurumi
Yuki Matsumura
Kento Yoshii
Noriko Nakagoshi
Satsuki Onodera
