A historical work of fiction with a bit of fantasy. Set in feudal Japan in the 18th century. In feudal Japan, it has been said that ""The Sword is the Soul of the Samurai."" Fujii Yukitora is an impoverished ronin who struggles to raise his two children after the death of his wife. Tange Sakura is a lone swordswoman who has engaged in the warriors' path to seek to better her skills. Hidemasa is a young samurai, orphaned and seeking guidance. Chief Retainer Saito Banzaemon seeks to be kind to commoners of his domain, but he has secret lusts within him. What happens when these four warriors seek to learn the true nature of a sword's soul?