Seasons & Episodes
EP 1
Episode 1
Konan Takaaki, a former member of K University’s Mystery Research Club, receives a mysterious letter from Nakamura Sei
EP 2
Episode 2
During a training camp at the Decagon House on Tsunoshima Island, a member of the Mystery Research Club is murdered. As
EP 3
Episode 3
Konan and Shimada continue their investigation but struggle to uncover any solid leads. While they question whether the
EP 4
Episode 4
Reviewing the clues they have gathered, Konan and Shimada develop a new hypothesis that could explain the tragedy at Aoy
EP 5
Episode 5
As the situation at the Decagon House grows more serious, Konan learns the shocking details of the incident from the pol
Popular Cast
Tomoya Oku
Takaaki Kawaminami
Munetaka Aoki
Kiyoshi Shimada
Akihiro Kakuta
Koujiro Nakamura
Toru Nakamura
Seiji Nakamura
Ayumu Mochizuki
"Ellery"
Neru Nagahama
"Agatha"
Yuki Imai
"Leroux"
Kosuke Suzuki
"Poe"
Reia Yonekura
"Orczy"
Rukiya
"Carr"
Hiroto Kobayashi
Kyoichi Morisu
Asumi Kikuchi
Chiori Nakamura
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