Roppen

Roppen summary:

Six of the deadliest assassins battle to kill each other!The stage is set in the "dictatorship" Rokugen Island, located in the western part of Yamaguchi Prefecture. There, the "battle of the six assassins" for the country's top position is about to take place...!Will Sifu, a hitman-slayer who has been commissioned to participate in the battle, be able to survive this extreme survival?