However the roots of nindokai are clearly in the Japanese martial arts. From here it arises in fact, next to many basic techniques (body position, tumbles, falls, evasion), the forms of
courtesy during training (respect, courtesy, etiquette). Other influences come from fighting the military body housing (CQB), the Ju-Jutsu, from Aikido as well as the services of
bodyguards. There is trained not only in the use of techniques without arms (Tai Jutsu), but also in the fight with and against weapons, for a real fight usually it takes place with some
kind of weapon.