Grandmaster (martial arts) of "Dan" rankings and Black belt and Red belt in martial arts both derive from Judo where they were adopted by its founder Kanō Jigorō. There are many terms similar or equivalent to 'grandmaster' used by various martial arts traditions. Some of these terms derive from older systems, while others are relatively modern. Japanese martial arts commonly use Sensei (先生) meaning "teacher" or literally translated, "born first" or "one who has gone before". A "Sensei" is a person who has knowledge and is willing to teach that knowledge to another. A "Sensei" assists students in "ken shiki" "the pursuit of
Japanese martial arts or spiritual) of the individual practitioner, with varying degrees of emphasis on the practical application of the martial art for either sport or self-defence purposes. The following subsections represent not individual schools of martial arts, but rather generic "types" of martial arts. These are generally distinguishable on the basis of their training methodology and equipment, though wide variation still exists within each. , considered by many to be Japan's national sport, has its origins in the distant past. The earliest written records of Japan, which are dated from the 8th century AD, record the first sumo match in 23 BC,