Sanada Clan kamon with clan name T-Shirt

The Sanada clan (真田) was a Japanese samurai clan, claimed descent from the Seiwa Genji. Historically, the clan's banner was established by Unno Yukiyoshi in the early 16th century. He emblazoned the Rokumonsen on his banner. The Sanada were key vassals in the Takeda army, with three famous generals being Sanada Yukitaka and his sons Sanada Nobutsuna, Sanada Masateru, and Sanada Masayuki. In the Sengoku period, Sanada Masayuki led the clan, his second son Sanada Yukimura was sent as a hostage to the Toyotomi clan in 1587. Sanada Yukimura later became a famous samurai warrior who was especially known as the leading general on the defending side of the Siege of Osaka. This is the kamon (family crest) of the Sanada clan, Rokumonsen (六文銭) or "Six coins". This name was derived from teachings of Buddhism, "Rikudo" that means six underworlds, which people would go down to after death. When one died, the bereaved gave "Rokumonsen" into the casket, which was believed to be needed to cross Death's river. Sanada took this concept into the family crest, and this was a message that they were not afraid of death and ready to die anytime in the battle. Below the crest is "Sanada" in kanji.