Shinsei Sanada Juuyuushi

During the Tensho Era, a meteor struck the Toriitoge border region, leaving behind a baby later named Sarutobi Sasuke. Recognized for his potential by Sanada Nobushige, Sasuke trained as a ninja. Nobushige's father, Sanada Masayuki, was known for his strategic skills and led 2,000 defenders at Ueda Castle. They successfully resisted an attack by 38,000 Tokugawa forces, aided by Nobushige and his allies, including Sasuke.