Shinsei Sanada Juuyuushi

(Sanada Juyushi Special) In Tensho Era 10 (AD. 1583), when Oda Nobunaga sent his troops to conquer Takeda territory in Shinshu, a meteor fell in Toriitoge on the border of Joshu. In a crater made by the meteor, there was a baby, and he was named Sarutobi Sasuke. His talent was appreciated by Sanada Nobushige (Sanada Yukimura), and he became a master of Ninja. Sanada Masayuki, the father of Nobushige, was famous as a strategist. He stayed in Ueda Castle and his only 2,000 soldiers put up a good fight against 38,000 soldiers of Tokugawa thanks to Nobushige and his subordinates including Sasuke. However.

source:animeground