O.k. here is the thing. The replies you are getting on here were meant to warn you of frauds in the ninjutsu world. You keeping defending them by saying they are nice people. They maybe very nice people who have treated you with alot of respect and that is great. The names you are saying for the most part are recognizable in the ninjutsu community. The problem is they are recognized as frauds not reputable instructors. Just because they are polite does that make them qualified? My grandfather was a very polite and kind man but he ran a farm not a dojo. Be careful not to fall into the dream world ninja fantasy that Ashida kim lives in. People who are posting these replies train in and under reputable people and know the difference. I personally suggest you find a Bujinkan dojo and find the difference yourself and yes I am sure they will be polite. But know this real training under a serious instructor can be hard to the body as well as the ego -