Ju-Jitsu

Martial art with focus on ground fighting
Known as Brazilian Jiu Jitsu as well. Ne-Waza (ground technique) is one of the main Jujitsu (and Judo) basis.
The Duo System is a discipline in which a pair of jutsukas from the same team show possible self-defense techniques against a series of 12 attacks
With a different approach, the Fighting System is articulated in a tree minute combats between athletes from opposing teams.