apanese unarmed grappling arts have been around for a very long time. The first references to such unarmed combat arts or systems can be found in the earliest so-called historical records of Japan, the Kojiki (Record of Ancient Matters) and the Nihon Shoki (Chronicles of Japan), which relate the mythological creation of the country and the establishment of the Imperial family. Other glimpses can be found in the older records and pictures depicting sumai (or sumo) no sechie, a rite of the Imperial Court in Nara and Kyoto performed for purposes of divination and to help ensure a bountiful harvest. These systems of unarmed combat began to be known as jujutsu, among other related terms, during the Muromachi period (1333-1568), according to densho (transmission scrolls) of the various ryu-ha (martial traditions, "schools") and historical records. Some define jujutsu and similar arts rather narrowly as "unarmed" close combat systems used to defeat or control an enemy who is similarly unarmed. Basic methods of attack include hitting or striking, thrusting or punching, kicking, throwing, pinning or immobilizing, strangling, and joint-locking. Great pains were also taken by the bushi (classic warriors) to develop effective methods of defense, including parrying or blocking strikes, thrusts and kicks, receiving throws or joint-locking techniques (i.e., falling safely and knowing how to "blend" to neutralize a technique's effect), releasing oneself from an enemy's grasp, and changing or shifting one's position to evade or neutralize an attack.
From a broader point of view, based on the curricula of many of the classical Japanese arts themselves, however, these arts may perhaps be more accurately defined as unarmed methods of dealing with an enemy who was armed, together with methods of using minor weapons such as the jutte (truncheon), tanto (knife), or kakushi buki (hidden weapons), such as the ryofundo kusari (weighted chain) or the bankokuchoki (a type of knuckle-duster), to defeat both armed or unarmed opponents. Furthermore, the term jujutsu was also sometimes used to refer to tactics for infighting used with the warrior's major weapons: ken or tachi (sword), yari (spear), naginata (glaive), and bo (staff).