An accident happened in Bungo Sekizen Domain, which caused Iwane to lose two childhood friends. The sad Iwane decided to leave his hometown, so he said goodbye to his fiancée Nao and became a wandering samurai. Iwane started his new life in a long house in Edo. After being introduced by the owner of the house, Kinbei, Iwane worked as a waiter in an eel shop during the day and a bodyguard in the house of the pawnshop owner Imazu at night. His gentle nature and excellent kendo gradually won the trust of the people around him, and also captured the heart of Kinbei's daughter. At this time, Iwane was involved in the conspiracy of the new currency circulated by the shogunate. In order to protect these important people he met in Edo, Iwane must put his grief aside and fight against evil forces.