Levius

A conflict in the 19th century causes significant devastation to Imperial City. Five years hence, a brand-new sport called "Metalboxing" is created, which merges boxing with robotics. After losing consciousness, Levius Cromwell, who lost his father during the battle, starts to show signs of being a young fighter and enrolls in training under his uncle Zacks Cromwell. As he progresses through the boxing levels, Levius eventually achieves his objective—the chance to compete for the promotion to Grade I, the highest rank a boxer could attain. Hugo Stratus was the opponent Levius needed to overcome in order to advance to that rank, but A.J. Langdon, a strange boxer, unexpectedly overcame Hugo. An continuous conflict between Levius and his adversaries is deciding the fate of Imperial City and human decency.