I don't know that all of Bujinkan does that. I'm sure there's some variance between schools.
iam not talking about all bujinkan iam talking about SOKE Hatsumi
if you go to the daikomyosai event in japan it is a guarantee that he will grade you
soke hatsumi doesnt care bout grades he gives them as gifts
part of the greatest strategy in the bujinkan, kyojutsu tenkan ho
method of falsehood and truth