Based on a long running manga series, which started in the seventies and oh yeah, you can tell.
The story is of a lackadaisical courier/swordsman who is a master of a twins blade, but prefers to spend his time cheating on his wife, being a terrible father, drinking sake and not doing his job.
The film is a comedy and manages to be funny at times, while having some truly disturbing scenes.
The film is set at the closing of the edo period, where anti foreigner warriors are at large and shows the main character coming into contact with a group of them and beating, but not killing them.
It then shows his carefree life as he enjoys life with his wife, (whose single goal in life seems to be to get some from her husband, when he's not grabbing ass around town) and hanging with his son, (who is looking for a much better father figure, and finds one) and his daughter (a chip of the old block who does as she pleases too.)
Not much really happens, but it gives insight into what must be a very dated, average, but oddly fun manga series. I recommend watching, you will somewhat enjoy it, though you may get a bitter aftertaste of old school sexism.
