One Piece: Thousandfold Training Amplification System

The destruction of the archives sent shockwaves through the world. The World Government declared Raiden an enemy, stripping him of his God Knight title. His bounty skyrocketed, placing him in the same league as the Emperors.

Meanwhile, his son, Ryu, had become a Marine Vice Admiral at just 18 years old—the youngest in history. His rapid rise mirrored Raiden's own past, but there was one difference: Ryu believed in the purest form of justice.

As fate would have it, the two were now on opposing sides.

News spread of an impending battle—a confrontation that would decide the world's fate. Raiden's hidden forces, trained in secrecy, challenged the Marines at Marineford, the same battlefield where Whitebeard had fallen.

Luffy, now an Emperor, stood alongside Raiden, leading the new generation of pirates. On the other side, Ryu, Kizaru, Fujitora, and the full force of the Marines stood ready to uphold the World Government's rule.

This was the final test.