Shabaou

A war between the Jade and Kokuyou peoples ended 30 years ago with Kokuyou victorious and the Jade people enslaved. The current emperor has announced a gladiator tournament named "Shaba Juu Rengoku," offering the title of "Shaba-ou" and the throne to the winner. A one-eyed swordsman has gained attention among the gladiators. The story follows a one-eyed slave seeking to become emperor.