The story takes place in 19th century Europe, and revolves around John Watson. He is scouted by the government to become a secret agent. However, Watson lives in a world where "Frankensteins"—human corpses that are re-purposed with a false soul in order to use them as laborers—are used to improve industrial development.
細谷佳正
as John H. Watson (voice)
村瀬歩
as Friday (voice)
大塚明夫
as M (voice)
菅生隆之
as The One (voice)
楠大典
as Frederick Barnaby (voice)
花澤香菜
as Hadaly Lilith (voice)
三木眞一郎
as Alexei Karamazov (voice)
山下大輝
as Nikolai Krasotkin (voice)
斉藤次郎
as Seigo Yamazawa (voice)
石井康嗣
as Ulysses Grant (voice)
桑島法子
as Moneypenny (voice)
武田幸史
as Thomas Edison (voice)