Jeet Kune Do is a hybrid martial arts system and life philosophy founded by martial artist Bruce Lee. The style is characterised by the utilization of direct, non classical, straightforward movements. Practitioners of the style believe in minimal movement with maximum effect and extreme speed.
The style is named for the concept of interception; intercepting an attack with an attack or attacking an opponent while they are about to attack. As such, the effectiveness of the practitioner's ability depends on extreme speed, strength and accuracy.
- Noriyasu Seta is a practitioner of Jeet Kune Do, throughout the series he teaches the style to Naru Narusegawa, Sarah McDougal and Keitaro Urashima.
- Bruce Lee invented the style after coming to the conclusion that, through his studies, the styles had become too rigid and unrealistic. He called martial art competitions of the day "Dry land swimming" and believed that combat should be spontaneous, and that a martial artist cannot predict it, only react to it.