Based on the original writings of the ninja master Hattori Hanzō, general of the shogun Ieyasu Tokugawa and one of the most famous warriors in the history of Japan, this manga offers us a story of growth and learning set against the background of the political intrigues of the Sengoku period . The adventures of two young ninja, Hisaaki and Norio, on their way to become shinobi warriors. The learning of the essential tactics, the use of weapons, the development of skills within the reach of only a select few, but also the precepts about social relations, the nature of deceit and lies, constitute an unbeatable way to approach these mythical fighters and discover the reasons for their eternal rivalry with the samurai. The book also includes an extensive epilogue written by Antony Cummins with fascinating details about the Shinobi Hiden, one of the best-known "ninja scrolls", which will reveal to us some of the secrets of the shinobi and the demanding process of formation to which they were submitted.