The story features a team of four sleuthing sisters.
Kaho
Yuriko Sasamoto
Noriko Nakagoshi
Mari Sasamoto
Natsuki Kato
Ayako Sasamoto
Yui Ichikawa
Tamami Sasamoto
Katsuhisa Namase
Hideki Jonouchi
Shigeru Muroi
Kazuyo Miyamoto
Naoto Takenaka
Yojin Hino
Yoshimasa Kondo
Kumiko Aimoto
