Librería Samer Atenea
Kálamo Books
Librería Elías (Asturias)
Librería Kolima (Madrid)
Librería Proteo (Málaga)
Adam packs over 30 years of martial arts training experience and what a modern-day ninjutsu practitioner should be training into a book less than 100 pages long! A must-read for anyone looking to modernize their current training or those with a general interest in the shinobi.