Toshitsugu Takamatsu Sensei (1887-1972): Takamatsu Sensei was considered the last true Ninja. Takamatsu Sensei was born in a family with roots both in Ninja, and Samurai classes. As a child he was instructed in several ryu's, becoming the only person to have completed training in all aspects of Ninjutsu. For most of his life he was the only person fully trained in Ninjutsu. Upon returning to his village he took Dr. Yoshiaki Hatsumi (Masaaki) as a student. After fifteen years of instructing Dr. Hatsumi, Takamatsu Sensei declared him his heir (Soke) in the art of Ninjutsu.