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A little taste of Eric's skills: jujitsu
Related Book: 
Sleeper's Run

A video showcasing some of the skills of Sleeper's Run protagonist, Eric Caine.

Jujutsu is a Japanese martial art and a method of close combat for defeating an armed and armored opponent in which one uses no weapon or only a short weapon. The word jujutsu is often spelled as jujitsu, ju-jitsu, jiu-jutsu or jiu-jitsu.

"Jū" can be translated to mean "gentle, supple, flexible, pliable, or yielding." "Jutsu" can be translated to mean "art" or "technique" and represents manipulating the opponent's force against himself rather than confronting it with one's own force.