Hi all, I have seen some info on line talking about either Iga ryu or Koga ryu ninjutsu. Some say that they are more authentically ninjutsu than bujinkan because of the Samurai components of Bujinkan. I even saw one man claiming to be soke of Iga Ryu (an American, I thought that was rather interesting). One woman was even claiming to have learned Koga Ryu from someone other than Masaaki Hatsumi. Any comments on these?