Kageyama (Sho Sakurai) works as the butler for rich heiress Reiko Hosho (Keiko Kitagawa). Reiko happens to be a novice detective but lacks certain deductive skills needed by detectives. Because of this Reiko relies on Kageyamaa to help her solve cases. Meanwhile, Kageyama isn't afraid to mince words and often calls out Reiko with his sharp tongue!
北川景子
as Reiko Hosho
櫻井翔
as Kageyama
椎名桔平
as Kyoichiro Kazamatsuri
中村雅俊
as Takuya Todo (cabin manager)
宮内ひとみ
as Rinko Todo
要潤
as Tenmei Ishikawa
鹿賀丈史
as Shinnosuke Unabara (ship captain)
黒谷友香
as Chika Yuki
甲本雅裕
as Junichi Matsushige
大倉孝二
as Yuta Koenji
児嶋一哉
as Paraji・Isuwaran
村川絵梨
as Mizuki Makurazaki
