Or has it already happened? I've noticed a lack of traditional JJ schools over the last 10 years. Most of the ones around these days seem to be a combination of Karate, Judo, Aikido and even Bjj instead of a traditional samurai fighting style. I've also heard that in Japan, if you mention that you're looking for "Jiujitsu", the Japanese will point you to a Bjj gym. Bjj taking over the moniker of "Jiujitsu" in Japan itself..... I find that to be the irony of ironies. Here's an article about a foreigner moving to Japan, seeking to study either Bjj or JJJ, and went with Bjj because he simply couldn't find a JJJ dojo; The Evolution of grappling in Japan: Why did I choose Brazilian Jiu-Jitsu in Japan? — Social Gelo with Angelo Anyway, how healthy are true traditional Japanese Jujitsu systems? Is the term "Jiujitsu" destined to be taken over by Bjj?