In endless sweat and steely will, Fanma Riya, the son of the protagonist Yujiro Vanma, trains hard day after day.His goal is only one: to surpass his father, known as the "strongest creature on the earth" and become the truly strongest.This obsession burned like a flame, driving him to constantly break through himself on the edge of his limit. At this moment, the five most brutal and violent death row prisoners in the world are quietly gathering and pointing their fingers to the point of their swords.They are already tired of the invincibility and even feel empty of life itself.They long for defeat, they long for being completely defeated - and they believe that only blade teeth can give them the long-lost shock and humiliation. In this unprecedented crisis, several legendary warriors from the underground fighting world also stood up and fought side by side with Kanya: Kaoru Hanayama with a steel body, the calm and determined Takaki Naogawa, the Martial Saint King Guo Wenwang, and the Japanese Emperor Dapeng Orishiro, who coexisted with madness and strength (should be confirmed as the character name: Doppo Orochi or Orochi Doppo). An epic showdown with life and death as bets and dignity as gunpowder is about to begin.The collision of strength and will is not only a battle for victory or defeat, but also the ultimate interpretation of the word "strong" deep in the soul.