Guilty Gear X

When humans created artificial beings called "gears" in the 22nd century, they didn't expect that their creation would eventually turn against them. Only one gear, named Justice, was able to transfer his will onto other gears and rebel against humans. In 2180, Justice was killed as a result of a bloody tournament organized by the Sacred Order of Holy Knights. Recently, a new gear was discovered who showed no signs of hostility, yet he had no master and was roaming freely. It was impossible to capture or kill him because he was immensely strong. Fearing a new Justice would grow out of this gear, the Order organized another tournament with a solid prize: five hundred thousand world dollars for the winner.