Harikiri is about an old Samurai, years after Japan started its path of modernization, which has left him without a master or income. He travels to a remaining feudal lord to finally die with honor by publicly committing suicide, except there are mysterious continual delays to the process. He insists on telling the Lord, once a rival to his own master, his tale as he waits to kill himself.

Is that the remake by Takashi Miike? The original I've seen is somewhat different from that. It takes place in the early Tokugawa era.