Kei Hattori

The story follows the flight of yakuza hitman Tetsu and his younger, artistic brother Kenji after the latter kills a yakuza boss in a double cross. The pair is pursued by the yakuza and police as they head for Manchuria. They are swindled of their money before they can reach their destination and take labor jobs on a tunnel project, each falling in love with the their new boss's wife and daughter, respectively. (Wikipedia)

In the 14th year of Kanei, Toyotomi`s men who managed to survive the battle of Sekigahara went to fight in the battle of Shimabara but there weren't enough men, so they were soundly defeated. Matsudaira Izunokami, a leading general of the Tokugawa side led his men up the road to Edo?but there is a man who is thinking of Tokugawa as his deadly enemy. This is one of the most complicated plots of any of the Shinobi no Mono films! Therefore, this synopsis is a little light on details. (shinobinomono.oninohana.com)