In a fictionalized Japan built on the aesthetics of the samurai era—where machines and automata coexist with ninja and katana—a lord grew tired of watching his subjects kill each other daily in blade duels. His solution was absolute: all conflicts must be settled through dodgeball. The sport replaced formal combat, spread to civilians as entertainment, and became a status symbol. Now the lord has announced a public tournament. The contestants range from the powerful to the scheming to those who want to marry the princess by winning. A dodgeball game built on the premise that a sport can replace a war.