This thread happened to catch my eye. Last summer me and my fiancé visited Japan. She is originally from there (born and raised) and most of her family lives in Osaka. We visited many different locations during our time there to include Tokyo, Kyoto, Osaka, Yokohama, and Iga. Iga is in fact where the ninjas originated from. The town is full of ninja propaganda and there is even a ninja village where they show you how the ninjas operated and how they carried out their covert operations. The hotel we stayed in was ninja themed and came with ninja outfits for both of us. I have never trained in ninjutsu, but I thought I would share this with any enthusiasts or practitioners on here. If you are visiting Japan, check out Iga. It's a great experience and there is even a nice castle you can see (Iga Ueno).