Samurai Rebellion

Samurai Rebellion is a 1967 Japanese film directed by Masaki Kobayashi. Its original Japanese title is Jiuchi Hairy tsuma shimatsu , which translates approximately as Rebellion Result of the Wife Bestowed or Rebellion Receive the Wife.

In the meantime, the daimyos primary heir dies, and he orders his exconcubine to rejoin his household to care for their son and heir. The family refuses, but Ichi is tricked into the castle by Isaburos younger son, and her husband and fatherinlaw are ordered to commit seppuku for their insolence and insubordination. Isaburo counters that he will comply only if the heads of the daimyo and his two primary advisors are brought to him first.Isaburo sends his younger son and wife away and dismisses his household servants. With his elder son he prepares for battle, removing the tatami from his house to prevent slipping in the blood that will be spilled and removing the houses walls to allow for more space for combat. ........

Source: Wikipedia