The Boy Detectives Club gathers under Kogorō Akechi, the mysterious detective.
Takuya Masumoto as Masaharu Shōta, a former Boy Detectives Club member, and currently a member of the tennis club, gardening club, and judo club of Rurino Academy.
Ibuki Kido as Makoto Noro, the sole female member of the Boy Detectives Club, and a technically-minded computer expert.
His mental and physical abilities are exceptional, and he gives the Boy Detectives Club free rein.