[About the Book]
There was once a samurai who wielded a spear stained red with blood-

Serving the Tokugawa clan since the days of Ieyasu’s grandfather, Kiyoyasu, Nobumasa Nagasaka fought so fiercely in every battle that the shaft of his spear would be dyed crimson. His valor earned him the name “Chiyari Kurō”-Kurō the Blood Spear. From then on, the Nagasaka family carried the proud title of “Chiyari” throughout the Tokugawa era.

This book is a historical journey by the author, a direct descendant of that legendary warrior, tracing the family’s 400-year lineage and the sites tied to their history.
Though not famous daimyo or celebrated heroes, samurai like Nobumasa Nagasaka steadfastly supported the Tokugawa from the shadows. Through retracing their ancestor’s footsteps, the author brings to life the untold spirit of the Sengoku warriors-and the deep sense of romance that lies in exploring one’s roots.

A must-read for history enthusiasts interested in the Sengoku period, the Tokugawa retainers, or those fascinated by ancestral research and family genealogy.


［Author Profile］
Sachio Nagasaka (Nagasaka Sachio), Great-Grandson of Isaburo Nagasaka
Born in 1932, Tokyo, Japan.

Graduated from Tokyo Metropolitan Kitazono High School in 1952.
Graduated from the Faculty of Agriculture, Tokyo University of Education in 1957.
• 1957–1962: Teacher at Itabashi Ward Nishidai Junior High School.
• 1963–1965: Teacher at Tokyo Metropolitan Mitaka High School.
• 1965–1968: Teacher at Tokyo Metropolitan Aoyama High School.
• 1968–1971: Teacher at Tokyo Metropolitan Hoya High School.
• 1971–1978: Teacher at Tokyo Metropolitan Minami Tama High School.
• 1978–1983: Vice-Principal at Tokyo Metropolitan Haijima High School.
• 1983–1989: Principal at Tokyo Metropolitan Chōfu Kita High School.
He served as a Director and Referee Committee Chairman of the Tokyo Football Association, Director and Referee Committee Chairman of the Kanto Football Association, and as a Member of the Referee Committee of the Japan Football Association.
Currently, he is the President of the Tokyo Football Referee Association, the President of the Uenohara City Cultural Association, and a member of the Ryūei Association