Kuno Totono, a curly-haired college student, visits Hiroshima and becomes embroiled in a mystery surrounding the inheritance of the Kariatsumari family's assets, using his intelligence and loquaciousness to unravel the case.

Masaki Suda
as Totono Kuno

Ko Shibasaki
as Yura Akamine

Kouhei Matsushita
as Kurumasaka Asaharu

Keita Machida
as Rikinosuke Kariatsumari

Nanoka Hara
as Shioji Kariatsumari

Riku Hagiwara
as Neo Hahakabe

Honami Suzuki
as

Kenichi Takitoh
as

Keiko Matsuzaka
as

Takuzo Kadono
as