Azumi (2003) IMDb
It’s the very early seventeenth century, somewhere in Japan. Ten helpless children were gathered years ago for training in total seclusion. They are now adults, fit to be released into the world outside. The purpose of their lives is the assassination of a number of unstable elements in Japanese society: the lords who are not satisfied to enter the long peace of the Tokugawa Shōgunate and who must therefore be silenced.
Action in mythic style. Massively exaggerated, genuinely funny.