Ishizuka Tetsuji was born in Japan on February 22, 1948. He started training with Soke Masaaki Hatusmi in the 1960s and is still actively training. He is the oldest student of Hatsumi. He has also trained with Takamatsu Sensei.
Dr. Kacem Zoughari is a well known history and martial arts researcher and practitioner. Born in Paris, France, he began studying martial arts as a teenager and quickly began visiting Japan to further his studies. He has practiced Ninjutsu for over 25 years and is a personal student of Soke Masaaki Hatsumi and Shihan Ishizuka Tetsuji.