Nakamura Mondo (played by Makoto Fujita) is a protagonist in Sure Death.
Edo law officer and assassin leader investigating murders and protecting the shogunate. Sen (played by Kin Sugai) appears in Sure Death.
Supporting assassin and investigator who helps solve serial murders in Edo. Ritsu (played by Mari Shiraki) appears in Sure Death.
Socially adept assassin supporting Mondo's team during mansion defense.