From their domains on Mercury, Venus, and Mars, the Lord Heirs of Mishima plot against each other and wage a silent war for power and to position themselves as the next Overlord of the corporation. The most feudal of the megacorporations, Mishima is ruled by its Samurai, each a noble beholden to a more powerful liege lord in a line that ends with the Overlord themselves. Only service to their liege ensures their continued prosperity, and so all Samurai are brought up with a tradition of self-sacrifice that stands in stark contrast to the beliefs of many of their rival corporations.

Mishima enters the conflicts of Warzone Eternal lead by the peerless swordsmen of the Hatamoto, the Ki-powered Shinobi, and the master assassins of the Shadow Walkers.