The Samurai's Tale / Erik C. Haugaard,

When the powerful Lord Takeda’s soldiers sweep across the countryside, killing and plundering, they spare the boy Taro’s life and take him along with them. Taro becomes a servant in the household of the noble Lord Akiyama, where he meets Togan, a cook, who teaches Taro and makes his new life bearable. But when Togan is murdered, Taro’s life takes a new direction: He will become a samurai, and redeem the family legacy that has been stolen from him.