Sanada Taiheiki S01 E37 The Night Before the Winter Campaign

The drama tells the story of the Sanada family. Originally serving the Takeda Clan they ruled the northern district of Shinano. The story begins right after the death of Takeda Shingen, continues through the rise of Tokugawa Ieyasu who founded the Tokugawa shogunate and covers roughly the period 1580-1610.